BENDIX BW1845 User Manual download pdf (Page 18)

Compressor with up to 25% duty cycle

Footnotes:

1 With increased air demand the air dryer cartridge needs to be replaced more often.

2 Use the drain valves to slowly drain all reservoirs to zero psi.

3 Allow the oil/water mixture to fully settle before measuring oil quantity.

4 To counter above normal temperatures at the air dryer inlet, (and resultant oil-vapor passing

upstream in the air system) replace the discharge line with one of a larger diameter and/

or longer length. This helps reduce the air's temperature. If sufficient cooling occurs, the

oil-vapor condenses and can be removed by the air dryer. Discharge line upgrades are not

covered under warranty. Note: To help prevent discharge line freeze-ups, shorter discharge

line lengths or insulation may be required in cold climates. (See Bendix Bulletins TCH-08-21

and TCH-08-22, included in Appendix B, for more information.)

5 For certain vehicles/applications, where turbo-charged inlet air is used, a smaller size

compressor may be permissible.

Recom- Recom- Acceptable

Typical Discharge mended mended Reservoir

Compressors Line Air Dryer Reservoir Oil Contents

No. of Spec'd Cartridge Drain at Regular

Axles Replacement

Schedule

Drain Interval

High Air Use

Low Air Use

e.g. Double/triple trailer, open

highway coach/RV, (most)

pick-up & delivery, yard or

terminal jockey, off-highway,

construction, loggers, concrete

mixer, dump truck, fire truck.

e.g. Line haul single trailer

w/o air suspension, air over

hydraulic brakes.

e.g. Line haul single trailer

with air suspension,

school bus.

e.g. City transit bus, refuse,

bulk unloaders, low boys,

urban region coach, central

tire inflation.

less

Table A: Maintenance Schedule and Usage Guidelines

Recom-

mended

Every

Month -

Max of

every 90

days

Every

Month

Every 3

Years

Every 2

Years

Every

Year

I.D.

Vehicle Used for:

Column 1

Column 2 Column 3 Column 4 Column 5

Regularly scheduled maintenance is the single most important factor in maintaining the air brake charging system.

Note: Compressor and/or air dryer

upgrades are recommended in cases

where duty cycle is greater than the

normal range (for the examples

above).

For Bendix

Tu-Flo

550 and 750

compressors, unloader service is

recommended every 250,000 miles.

Length

6 ft.

1/2 in.

9 ft.1/2 in.

12 ft.

1/2 in.

5/8 in.

12 ft.

BASIC test

acceptable

range:

5 oil units

per month.

See

appendix

For oil carry-over

control

suggested

upgrades:

3/4 in. 15 ft.

For oil carry-over

control

suggested

upgrades:

5/8 in. 15 ft.

For oil carry-over

control

suggested

upgrades:

5/8 in. 9 ft.

For oil carry-over

control

suggested

upgrades:

5/8 in. 12 ft.

Compressor with less than 15% duty

cycle

Compressor with up to 25% duty cycle

Bendix

BA-921

™

air compressor

Bendix

Tu-Flo

550 air compressor

Bendix

Tu-Flo

750 air compressor

Bendix

BA-922

™

, or DuraFlo

™

596

air compressor

BASIC test

acceptable

range:

3 oil units

per month.

See

appendix

For the

BASIC

Test Kit:

Order

Bendix

P/N

5013711

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 39 40

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BENDIX BW1845 User Manual Page 18

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