Name: WABCO 1200 Plus MCP
Brand: WABCO
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6 Appendix III — Special Applications

Meritor WABCO Maintenance Manual 34 (Revised 03-16)

Meritor WABCO System Saver Series Single Cartridge Air Dryer Component Replacement

Guide — Dedicated Purge

Figure 6.9

O-RING

HEATER ASSEMBLY

DESICCANT CARTRIDGE

PRESSURE RELIEF VALVE

PURGE VALVE ASSEMBLY

OUTLET CHECK

VALVE ASSEMBLY

TURBO CUT-OFF

VALVE ASSEMBLY

1800

1200

Spring not used with U Series dryers.

4003885a

Table of Contents3
Section 1: Introduction5
- Other Publications Related to Meritor WABCO System5
- Air Dryer Identification5
How the Air Dryer Works6
Air Dryer Cycle7
Air Dryer Components11
Dryer Identification14
- Description of Components14
Section 2: Component Removal and Installation18
- Component Replacement18
- Requirements18
Component Removal and Installation19
- Desiccant Cartridge19
Outlet Check Valve Assembly20
- Heater Assembly20
Turbo Cut-Off Valve Assembly21
System Saver 1200 Plus Governor22
- Regeneration Valve Assembly22
Purge Valve Assembly23
Pressure-Controlled Check Valve (PCCV)24
Bypass Valve25
Pressure Relief Valve26
- Purge Silencer (Muffler)26
Air Dryer Assembly27
Section 3: Troubleshooting and Testing28
- Maintenance28
Maintenance Tips29
Troubleshooting30
Tests35
- Heater Resistance35
- Electric Power to Dryer35
- Leak Test35
- Air Pressure Checks35
- Operational Test for System Saver Series Air Dryers35
Pressure-Controlled Check Valve Test - Regeneration Style Only36
Section 4: Appendix I - Glossary38
- Definitions38
- Basic Air System/Air Dryer Terms38
Section 5: Appendix II - Application Info39
- Requirements39
- Operating Environment39
System Saver Series Installation Criteria40
- 37 Section 6: Appendix III - Special41
- Description41
- Holset E-Type Compressor Systems41
Section 6: Appendix III - Special Applications41
ECON Valve42
Alcohol Evaporator44
Combo Tank Installation for Regeneration-Style Air Dryers45
Meritor WABCO System Saver Series Single Cartridge Air Dryer Component Replacement Guide - Dedicated Purge47
Meritor WABCO System Saver Series Single Cartridge Air Dryer Component Replacement Guide48
Section 7: Appendix IV - Exploded View of System Saver 1200 Plus Series Air Dryer49
- 45 Section 7: Appendix IV - Exploded View of50
- 46 Section 8: Appendix V - Temporary Air50
- Bypass Procedure50
Section 8: Appendix V - Temporary Air Dryer Bypass50
Section 9: Appendix VI - Exploded View of51

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Brand	WABCO
Model	1200 Plus MCP
Category	Other
Language	English

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