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--captions by vitac--
Www.Vitac.Com
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Captions paid for by
Discovery communications
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Narrator:
The reclining barber chair
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Was invented in america in 1878.
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At the time,
It was a grooming breakthrough.
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With a chair that leaned back
And moved forward,
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The barber
Could shave the customer
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With greater precision,
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00:01:06,379 --> 00:01:08,724
And when wielding
A straight-edged razor,
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Precision is definitely
A good thing.
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The barber chair
Is the original easy chair.
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Just sit back
And enjoy the recline.
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00:01:21,793 --> 00:01:24,793
The client doesn't need to
Position himself for a shave.
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The chair does all the moving.
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It even lifts and swivels.
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Production starts
With the base of the chair.
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An employee places
A flat, round piece of steel
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In a two-part die.
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00:01:40,586 --> 00:01:42,965
The die comes together
And applies pressure
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00:01:42,965 --> 00:01:46,655
To take the steel
From flat to domed.
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The domed chair base then spins
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00:01:52,758 --> 00:01:56,344
As an abrasive wheel etches a
Brushed finish onto the surface.
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00:01:59,310 --> 00:02:03,344
Next, the worker tucks the end
Of a strip of steel
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00:02:03,344 --> 00:02:04,724
Between rollers
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00:02:04,724 --> 00:02:08,344
And turns them
To curl the steel into a sleeve
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00:02:08,344 --> 00:02:10,620
For the hydraulic chair lift.
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00:02:10,620 --> 00:02:13,862
He slides a piece of plastic
Into grooves on the ends
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00:02:13,862 --> 00:02:15,931
To close the steel sleeve.
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00:02:15,931 --> 00:02:18,586
Then he slides it
Onto the chair lift pump.
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00:02:18,586 --> 00:02:23,586
He places a large trim ring
On the end of the pump
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00:02:23,586 --> 00:02:27,137
And sets the domed chair base
On top.
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Screws secure the base
And chair-lift assembly.
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00:02:31,379 --> 00:02:33,827
With the assembly
Now right-side-up,
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00:02:33,827 --> 00:02:36,758
He attaches a u-shaped
Foot pedal to the pump.
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00:02:43,137 --> 00:02:44,482
Production then moves
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00:02:44,482 --> 00:02:48,724
To the construction
Of the actual seat.
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The worker glues several sheets
Of russian birch
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And staples them together.
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00:02:58,000 --> 00:02:59,965
She continues to layer
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00:02:59,965 --> 00:03:02,793
Until the birch
Is nearly an inch thick.
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00:03:04,758 --> 00:03:08,137
The last layer is thick plywood.
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00:03:08,137 --> 00:03:12,344
It's been cut to accommodate
A steel frame.
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00:03:12,344 --> 00:03:15,000
She glues and staples
The plywood
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To the layered birch.
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00:03:19,379 --> 00:03:21,689
Then it's into a press
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00:03:21,689 --> 00:03:24,827
For the chair's seat,
Back, and arms.
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00:03:26,931 --> 00:03:29,896
It bends the parts
To a gentle curvature
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00:03:29,896 --> 00:03:32,931
That will make the chair
More comfortable to sit in.
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00:03:32,931 --> 00:03:35,482
With a hot stamp,
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The worker brands
The company name and logo
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00:03:38,310 --> 00:03:40,034
Into vinyl upholstery.
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00:03:41,965 --> 00:03:46,034
He places the wood chair back
Into a bed of cushy foam.
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00:03:46,034 --> 00:03:49,413
He pulls the edges of the foam
Tightly to the wood
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And staples it.
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He trims the excess.
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He covers the chair back with
The pre-sewn vinyl upholstery,
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And it's a snug fit.
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00:04:06,103 --> 00:04:09,379
Next, he gets a hand
From a pneumatic device.
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00:04:09,379 --> 00:04:11,344
It holds the chair part in place
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00:04:11,344 --> 00:04:14,827
As he staples
The upholstery to it.
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00:04:14,827 --> 00:04:19,620
He trims the vinyl
For a clean edge.
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00:04:19,620 --> 00:04:21,000
He checks the fit,
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00:04:21,000 --> 00:04:23,482
And, once satisfied,
He moves on to the chair arms.
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00:04:23,482 --> 00:04:26,965
He locks an arm in a clamp
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00:04:26,965 --> 00:04:29,517
And installs
The chrome end piece.
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00:04:29,517 --> 00:04:32,896
The chrome resists wear
Better than vinyl does --
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Important on this gripping part.
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The crew attaches
The steel chair frame
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To the underside
Of the upholstered seat.
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They screw the arms
Onto the frame.
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00:04:48,620 --> 00:04:51,241
They install
The pneumatic mechanism
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That makes the chair recline.
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They screw the upholstered
Chair back to the steel frame
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00:04:56,931 --> 00:05:01,034
And link
The recliner mechanism to it.
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00:05:02,931 --> 00:05:08,793
They test the recline
And incline functions.
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00:05:08,793 --> 00:05:10,655
The footrest is next.
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00:05:12,827 --> 00:05:15,448
They then pump up the lift shaft
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And transfer
The upholstered chair to it.
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They close the back of the chair
With an upholstered panel,
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And finally,
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They give the customer
A place to rest his head.
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With the headrest installed,
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This barber chair
Is ready for customers.
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Time spent reclining in it
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Will no doubt leave the client
Looking and feeling refreshed.
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Narrator: a sewage pump is part
Of an underground operation
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To dispose of human waste.
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It is essential equipment
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When sewage must be pumped
To a septic system or sewer line
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00:06:11,586 --> 00:06:13,931
At a higher
Underground location.
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00:06:13,931 --> 00:06:15,620
Working below the surface,
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00:06:15,620 --> 00:06:18,689
Sewage pumps take care
Of unpleasant business.
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00:06:22,758 --> 00:06:25,000
When it comes to sewage,
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People understandably prefer
To flush and forget.
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The sewage pump
Helps make that possible.
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It is the number-one way
To move waste.
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00:06:34,689 --> 00:06:38,724
When the sewage reaches
A certain level upon discharge,
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00:06:38,724 --> 00:06:40,172
The pump's floating sensor
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00:06:40,172 --> 00:06:42,275
Activates a switch
To start pumping.
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00:06:45,068 --> 00:06:48,655
Then it's on its way to
A septic system or sewer line,
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00:06:48,655 --> 00:06:52,586
Ensuring that sewage receives
The necessary treatment.
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00:06:55,931 --> 00:06:58,413
They make
The sewage-pump housing
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From a rugged cast iron.
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00:07:00,137 --> 00:07:03,551
A chain conveyor takes
The housing parts for a rinse
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00:07:03,551 --> 00:07:05,206
And an application of a chemical
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00:07:05,206 --> 00:07:09,655
That slightly etches the surface
In preparation for finishing.
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00:07:09,655 --> 00:07:11,172
The journey continues
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00:07:11,172 --> 00:07:14,758
Through a big dryer
That removes residual moisture.
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00:07:14,758 --> 00:07:18,172
The parts now head
Into the spray booth
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For a finish
That will protect the surface.
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The conveyor delivers
A negative charge to the parts,
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00:07:25,172 --> 00:07:27,379
Causing the positively charged
Powder finish
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00:07:27,379 --> 00:07:28,793
To gravitate to them.
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It completely coats the parts,
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00:07:31,344 --> 00:07:36,448
And they travel through an oven
To bake on the powder finish.
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00:07:36,448 --> 00:07:39,000
Next, workers move
The pump-housing units
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Across to a spinning,
Abrasive disk.
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This grinds the edges flat
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00:07:43,413 --> 00:07:47,655
To allow for a tight seal
To other parts.
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00:07:47,655 --> 00:07:50,482
Here's the housing
Before grinding,
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And here it is after.
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He places a gauge under the part
In several places
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00:08:00,517 --> 00:08:03,379
To ensure
That it's completely even.
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00:08:03,379 --> 00:08:07,000
Next, a tool machines
The part of the housing
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00:08:07,000 --> 00:08:09,241
That holds the stator,
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00:08:09,241 --> 00:08:11,482
The stationary part
Of the motor.
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00:08:11,482 --> 00:08:14,379
It carves the opening so that
The stator will fit to it
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00:08:14,379 --> 00:08:19,344
And also align
Next to the motor housing.
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00:08:19,344 --> 00:08:21,931
Using a drill press,
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00:08:21,931 --> 00:08:25,448
A worker cuts a thread
Into another part of the pump.
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This will allow it
To connect to a discharge pipe.
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00:08:33,000 --> 00:08:36,413
The parts are now ready
For assembly.
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00:08:36,413 --> 00:08:39,344
A worker presses the carbon half
Of a seal for the rotor shaft
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00:08:39,344 --> 00:08:40,620
Into place.
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00:08:44,310 --> 00:08:46,379
He lubricates the rotor shaft
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00:08:46,379 --> 00:08:51,034
And inserts it
Into the pump housing.
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00:08:51,034 --> 00:08:55,241
A blast of compressed air
Removes any contaminants.
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00:08:55,241 --> 00:08:59,241
And he installs the ceramic half
Of the rotor-shaft seal.
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00:08:59,241 --> 00:09:03,758
Next, he screws the impeller
To the rotor shaft.
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00:09:03,758 --> 00:09:05,689
The impeller will move sewage
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00:09:05,689 --> 00:09:10,862
From the pumping chamber
To the discharge pipe.
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00:09:10,862 --> 00:09:13,620
He installs an o-ring
Around the opening to the motor.
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00:09:16,034 --> 00:09:19,965
He inserts the stator...
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00:09:19,965 --> 00:09:22,965
And screws it into place.
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00:09:25,793 --> 00:09:29,241
He connects lead wires to
Terminals in the motor housing
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00:09:29,241 --> 00:09:31,862
And sets it in place.
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00:09:31,862 --> 00:09:34,758
He runs the power cord
Through the motor housing
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00:09:34,758 --> 00:09:36,655
And tightens a seal
Around the cord.
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00:09:36,655 --> 00:09:39,310
He attaches a metal guard
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00:09:39,310 --> 00:09:42,344
To give the pump float
Adequate clearance,
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00:09:42,344 --> 00:09:46,000
Then seals the motor housing
And wires the pump switch.
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00:09:46,000 --> 00:09:49,137
He screws the switch case
To the housing.
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00:09:49,137 --> 00:09:51,172
A worker plugs in the pump
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00:09:51,172 --> 00:09:55,103
To test for any shorts
In the electrical components.
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The pump passes all the tests.
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00:10:01,103 --> 00:10:06,310
It's ready for the float
That actuates the pump switch.
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00:10:06,310 --> 00:10:09,310
A piece has been cut out
Of this pump
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00:10:09,310 --> 00:10:12,000
To give us an inside look
At the sewage pump
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00:10:12,000 --> 00:10:14,620
And its operation.
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00:10:14,620 --> 00:10:18,551
As waste water rises,
So does the float,
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00:10:18,551 --> 00:10:21,793
And it activates the switch
To turn on the pump.
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When the sewage subsides,
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The float lowers
And switches off the pump.
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00:10:27,827 --> 00:10:31,137
Next, the pump takes the plunge
In a test tank
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00:10:31,137 --> 00:10:33,517
To ensure
That it can handle the pressure
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00:10:33,517 --> 00:10:36,172
And that it meets
All the performance standards.
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00:10:38,103 --> 00:10:41,068
Once the computer gives
The sewage pump the green light,
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00:10:41,068 --> 00:10:44,862
It's on its way
To a septic system near you.
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00:10:49,206 --> 00:10:51,724
Built for a life of effluence,
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00:10:51,724 --> 00:10:55,413
This sewage pump is now ready
To go with the flow.
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Narrator:
There are unofficial claims
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That bimini boat tops were named
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For the sun-drenched
Bimini islands of the bahamas.
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00:11:16,931 --> 00:11:19,931
The open-sided canvas tops
Are usually retractable,
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00:11:19,931 --> 00:11:22,793
And beginning
In the early '60s,
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Were developed to offer boaters
Protection from the sun.
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Out on the open water,
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Bimini boat tops
Provide shelter from the rain
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And shade in the sun.
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Their durable
And versatile materials
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00:11:37,586 --> 00:11:42,827
Withstand rugged sea breezes
And intense u.V. Rays
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00:11:42,827 --> 00:11:46,000
While providing ample headroom
For boaters.
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00:11:46,000 --> 00:11:49,379
A worker measures a piece
Of anodized aluminum tubing
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00:11:49,379 --> 00:11:51,068
For the exact leg height needed
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00:11:51,068 --> 00:11:53,793
For each custom-made
Bimini boat top.
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Then he cuts the tubing
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00:11:56,068 --> 00:12:01,413
To the dimension needed
For each boat.
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They use aluminum
And stainless steel
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00:12:03,551 --> 00:12:04,896
Because they don't rust.
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00:12:06,586 --> 00:12:10,068
The worker begins bending
The frame of the boat top.
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00:12:10,068 --> 00:12:13,137
The eventual roof support
Is on the floor
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00:12:13,137 --> 00:12:15,931
While he holds the leg height
In his hand.
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00:12:15,931 --> 00:12:18,931
He must be careful
To not overbend.
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00:12:20,620 --> 00:12:25,758
The final angle
Is about 88 degrees.
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The worker crowns the tubing,
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00:12:27,862 --> 00:12:30,896
A process that puts a rise
In the center of the roof
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00:12:30,896 --> 00:12:32,896
And pulls the legs inward.
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00:12:35,517 --> 00:12:37,137
Each bimini boat top
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00:12:37,137 --> 00:12:39,275
Is made of three bows
Of different heights.
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The front
Is shorter than the back,
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00:12:41,724 --> 00:12:43,241
While the center is usually
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00:12:43,241 --> 00:12:45,482
About 40%
Of the back leg height.
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00:12:48,482 --> 00:12:51,310
Workers now assemble the bows.
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00:12:51,310 --> 00:12:53,965
They attach eye ends
And jaw slides
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00:12:53,965 --> 00:12:58,172
To form rudimentary hinges.
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00:12:58,172 --> 00:13:01,034
They now unfold
The assembled tubing
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00:13:01,034 --> 00:13:04,137
Using the precise measurements
Of a customer's boat.
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00:13:04,137 --> 00:13:07,034
They simulate the final shape
Of the boat top
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00:13:07,034 --> 00:13:10,379
By using tape to spread the bows
To exact widths.
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00:13:12,655 --> 00:13:16,275
Once the bows have been spread
And the distance is measured,
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00:13:16,275 --> 00:13:18,827
They can see the shape
Of the final boat top.
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00:13:18,827 --> 00:13:23,724
All that's left
Is installing the roof itself.
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00:13:23,724 --> 00:13:26,620
The roof is made
Of acrylic canvas
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00:13:26,620 --> 00:13:28,517
That is both water-
And fade-resistant.
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00:13:28,517 --> 00:13:31,620
And there are plenty of colors
To choose from.
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00:13:31,620 --> 00:13:34,034
The patterning process begins.
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00:13:34,034 --> 00:13:35,862
Once the roof is cut,
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00:13:35,862 --> 00:13:38,482
A worker stitches
The roof panels.
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00:13:38,482 --> 00:13:41,344
Workers spread the cut panels
Over the bow setup
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00:13:41,344 --> 00:13:44,137
To finalize the roof dimensions.
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00:13:44,137 --> 00:13:47,310
The canvas fabric
Is clamped to the bow setup
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00:13:47,310 --> 00:13:51,344
As a worker marks the edges
On the outside of the fabric.
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00:13:51,344 --> 00:13:54,172
The roof is made in panels.
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00:13:54,172 --> 00:13:56,344
It usually takes
Two or more panels
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00:13:56,344 --> 00:13:57,551
To complete a roof,
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00:13:57,551 --> 00:14:02,034
Depending on the size
Of the boat.
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00:14:02,034 --> 00:14:05,827
Once excess material
Has been trimmed off,
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00:14:05,827 --> 00:14:09,758
The worker begins stitching.
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00:14:09,758 --> 00:14:12,413
She turns the outer edge
Of the roof
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00:14:12,413 --> 00:14:14,551
And uses a straight stitch.
231
00:14:14,551 --> 00:14:16,551
She works on the sides
Of the canvas roof
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00:14:16,551 --> 00:14:18,310
Before the ends.
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00:14:20,724 --> 00:14:23,241
The worker
Now patterns the listing,
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00:14:23,241 --> 00:14:26,551
Which is a pocket through which
The bow will be inserted.
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00:14:26,551 --> 00:14:29,206
Here's what the listing's
Raw pattern looks like
236
00:14:29,206 --> 00:14:31,310
Once measured and cut.
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00:14:31,310 --> 00:14:35,172
She places the finished listing
On top of the panel
238
00:14:35,172 --> 00:14:38,896
And stitches it
To the end of the roof panel.
239
00:14:38,896 --> 00:14:40,620
The stitching process is key
240
00:14:40,620 --> 00:14:43,034
To the durability
Of the boat top.
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00:14:45,448 --> 00:14:49,620
She turns the roof over
So the listing is backwards.
242
00:14:49,620 --> 00:14:54,413
It's actually sewn on inside-out
And then turned over.
243
00:14:54,413 --> 00:15:00,379
She stitches the entire length
Of the listing closed...
244
00:15:00,379 --> 00:15:03,379
Then the company's
Identification tag.
245
00:15:06,689 --> 00:15:09,689
Workers now insert
The pieces of tubing
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00:15:09,689 --> 00:15:12,482
Into the listings
Of the canvas roof.
247
00:15:12,482 --> 00:15:18,103
First, they push the rear bow
All the way through.
248
00:15:18,103 --> 00:15:20,103
Once the rear bow is in place,
249
00:15:20,103 --> 00:15:23,000
They prepare to insert
The center and front bow
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00:15:23,000 --> 00:15:25,206
Of the boat top.
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00:15:25,206 --> 00:15:29,275
They unfurl
The remainder of the roof
252
00:15:29,275 --> 00:15:34,793
And position the center bow
On the center listing.
253
00:15:34,793 --> 00:15:36,793
Gradually, they slide the tubing
254
00:15:36,793 --> 00:15:38,896
All the way through
The center listing.
255
00:15:43,379 --> 00:15:45,827
With the front bow inserted,
256
00:15:45,827 --> 00:15:49,000
The bimini boat top
Is almost complete.
257
00:15:50,586 --> 00:15:54,896
An employee inspects
The boat top for any defects.
258
00:15:54,896 --> 00:15:57,413
Once installed,
The bimini boat top
259
00:15:57,413 --> 00:15:59,655
Can either be tucked away
In its boot
260
00:15:59,655 --> 00:16:02,517
Or opened up and held in place
By front straps.
261
00:16:02,517 --> 00:16:03,827
For the life of your boat,
262
00:16:03,827 --> 00:16:07,344
A well-maintained
Bimini boat top has it covered.
263
00:16:16,724 --> 00:16:19,931
Narrator: running an engine
On diesel fuel is efficient,
264
00:16:19,931 --> 00:16:22,551
But it emits smelly, black
Exhaust,
265
00:16:22,551 --> 00:16:24,241
Soot, leftover carbon
266
00:16:24,241 --> 00:16:27,310
That didn't burn off
In the combustion process.
267
00:16:27,310 --> 00:16:30,068
To prevent exhaust emissions
From polluting the air,
268
00:16:30,068 --> 00:16:32,655
Diesel engines
And diesel-powered generators
269
00:16:32,655 --> 00:16:34,689
Need powerful filters.
270
00:16:36,482 --> 00:16:40,379
This self-cleaning diesel filter
Traps engine-exhaust soot
271
00:16:40,379 --> 00:16:43,758
And burns it off
By heating the filter elements.
272
00:16:43,758 --> 00:16:46,965
This effectively completes
The combustion process.
273
00:16:46,965 --> 00:16:49,310
At the core
Of those filter elements
274
00:16:49,310 --> 00:16:51,827
Are heating strips
Made of steel fiber,
275
00:16:51,827 --> 00:16:53,551
Which is like dense steel wool.
276
00:16:53,551 --> 00:16:57,344
But the steel
Is a special mix of alloys
277
00:16:57,344 --> 00:17:00,931
Resistant to high temperatures
And corrosion.
278
00:17:00,931 --> 00:17:03,482
Each heating strip
Goes into a machine
279
00:17:03,482 --> 00:17:06,448
Which repeatedly folds it
Up then down,
280
00:17:06,448 --> 00:17:10,310
Pleating it like an accordion.
281
00:17:10,310 --> 00:17:13,551
The thick steel fibers
Are what trap the soot particles
282
00:17:13,551 --> 00:17:17,034
As the engine exhaust
Flows through.
283
00:17:17,034 --> 00:17:20,241
An electrical current
Heats these conductive fibers,
284
00:17:20,241 --> 00:17:25,689
Burning off the soot regardless
Of engine-exhaust temperatures.
285
00:17:25,689 --> 00:17:27,482
Using nickel crimps,
286
00:17:27,482 --> 00:17:29,448
Workers connect --
Depending on the filter size --
287
00:17:29,448 --> 00:17:33,241
Up to seven pleated strips
Per filter element.
288
00:17:33,241 --> 00:17:36,793
They press the crimps
Securely into the steel fiber
289
00:17:36,793 --> 00:17:38,137
With a press.
290
00:17:38,137 --> 00:17:41,896
They attach a different type
Of crimp at the far ends.
291
00:17:41,896 --> 00:17:43,931
This type
Has a tab with three holes
292
00:17:43,931 --> 00:17:47,310
For the electrical connections.
293
00:17:47,310 --> 00:17:50,896
Next, they bend the assembled
Strips into a circle
294
00:17:50,896 --> 00:17:54,448
And place them inside
A perforated steel housing.
295
00:17:54,448 --> 00:17:56,758
A temporary cardboard spacer
296
00:17:56,758 --> 00:17:59,310
Creates a gap
Between strips and housing
297
00:17:59,310 --> 00:18:01,724
To insulate
Against short circuits.
298
00:18:01,724 --> 00:18:04,206
The electrical-connection tabs
On the ends
299
00:18:04,206 --> 00:18:06,551
Fit through slots at the front.
300
00:18:06,551 --> 00:18:08,586
An insulating block
Made of mica,
301
00:18:08,586 --> 00:18:10,034
A non-conductive mineral,
302
00:18:10,034 --> 00:18:12,103
Goes behind the tabs,
303
00:18:12,103 --> 00:18:14,758
Followed by steel-fiber spacers.
304
00:18:14,758 --> 00:18:18,241
All this sets up a clear
And strong conductive path
305
00:18:18,241 --> 00:18:21,172
From the power source
To the strips.
306
00:18:21,172 --> 00:18:23,965
They fasten the insulating block
To the housing.
307
00:18:23,965 --> 00:18:26,724
Then, using tweezers,
308
00:18:26,724 --> 00:18:30,448
They place a mica spacer
In between each pleat.
309
00:18:30,448 --> 00:18:33,172
This prevents the pleats
From touching each other
310
00:18:33,172 --> 00:18:34,724
And causing a short circuit
311
00:18:34,724 --> 00:18:39,310
As the electrical current
Passes through the strips.
312
00:18:39,310 --> 00:18:43,103
They place a spacing stick
Inside each pleat.
313
00:18:43,103 --> 00:18:44,586
This is just temporary,
314
00:18:44,586 --> 00:18:47,379
To size the pleat's width
Uniformly
315
00:18:47,379 --> 00:18:50,517
Until they're cemented
Permanently in position.
316
00:18:50,517 --> 00:18:53,620
To do that,
Workers pour ceramic cement
317
00:18:53,620 --> 00:18:57,896
Into a circular bottom plate
Made of perforated steel.
318
00:18:57,896 --> 00:19:01,965
The perforations
Ensure better bonding.
319
00:19:01,965 --> 00:19:07,620
They spread the cement
Evenly across the plate...
320
00:19:07,620 --> 00:19:12,137
Then position a stainless-steel
Tube in the center
321
00:19:12,137 --> 00:19:16,965
To connect this plate
To an identical plate on top.
322
00:19:16,965 --> 00:19:22,689
They carefully place the strips
Into the cement
323
00:19:22,689 --> 00:19:24,758
And position the top plate...
324
00:19:27,758 --> 00:19:30,724
...Then add a weight
To hold it down
325
00:19:30,724 --> 00:19:33,068
While it goes into an oven
At 85 degrees
326
00:19:33,068 --> 00:19:35,068
To cure the cement.
327
00:19:39,482 --> 00:19:41,448
45 minutes later,
328
00:19:41,448 --> 00:19:46,448
They take it out of the oven
And remove the top plate.
329
00:19:46,448 --> 00:19:50,172
They also remove the spacing
Sticks and cardboard spacer,
330
00:19:50,172 --> 00:19:52,068
Which are no longer required
331
00:19:52,068 --> 00:19:55,275
Because the spacing is now
Permanently set in cement.
332
00:19:58,172 --> 00:20:02,758
They repeat the cementing
Process with the top plate.
333
00:20:02,758 --> 00:20:05,862
After a final four hours
In the curing oven,
334
00:20:05,862 --> 00:20:08,310
The electrically heated
Filter element,
335
00:20:08,310 --> 00:20:09,655
This diesel filter's
Key component,
336
00:20:09,655 --> 00:20:11,827
Is completed,
337
00:20:11,827 --> 00:20:15,448
And the main assembly can begin.
338
00:20:15,448 --> 00:20:17,379
The larger the filter,
339
00:20:17,379 --> 00:20:19,586
The more filter elements
It contains
340
00:20:19,586 --> 00:20:21,310
In its stainless-steel housing.
341
00:20:21,310 --> 00:20:22,793
For this mid-sized model,
342
00:20:22,793 --> 00:20:26,172
Technicians stack four sets
Of six elements
343
00:20:26,172 --> 00:20:30,000
Then connect electrical cables
To the tab holes of each one.
344
00:20:33,103 --> 00:20:36,103
Next, technicians install
A flow-control valve
345
00:20:36,103 --> 00:20:37,758
For each stack.
346
00:20:37,758 --> 00:20:39,000
When activated,
347
00:20:39,000 --> 00:20:42,137
The valve reduces exhaust flow
To that stack,
348
00:20:42,137 --> 00:20:44,931
Enabling the system to
Automatically clean elements
349
00:20:44,931 --> 00:20:48,310
By electrically heating
The strip.
350
00:20:48,310 --> 00:20:51,793
An internal computer
Manages the cleaning cycles.
351
00:20:51,793 --> 00:20:55,827
It uses sensors that detect soot
Accumulation in the elements,
352
00:20:55,827 --> 00:20:59,620
Isolating and cleaning one
Or multiple elements at a time.
353
00:21:01,137 --> 00:21:04,586
On the front,
Techs mount the inlet flange
354
00:21:04,586 --> 00:21:06,689
Through which
The dirty diesel exhaust
355
00:21:06,689 --> 00:21:08,620
Enters the filter...
356
00:21:08,620 --> 00:21:10,931
On top, the outlet flange
357
00:21:10,931 --> 00:21:14,034
Through which that exhaust
Exits soot-free.
28220
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