WABCO 1200E, Руководство по обслуживанию

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1 Introduction
11
Meritor WABCO Maintenance Manual 34 (Revised 03-16)
Coalescing Cartridge: Utilizes a filter element added to the
standard desiccant to remove aerosols and oil particles.
Heater: Located in the air dryer base, the heater prevents water
that collects in the air dryer from freezing. It consists of a cylindrical
resistive-type heating element and a small circular thermostat.
Heater is available for 12- and 24-volt air dryers. Figure 1.12.
Figure 1.12
Bypass Valve: A valve located between the inlet and outlet ports of
the dryer. It allows air to flow into the dryer and go directly to the
outlet port, bypassing the desiccant cartridge. The 1200 and 1200E
Series with date codes later than 0894 do not use a bypass valve.
Figure 1.13.
Figure 1.13
Outlet Check Valve: A valve located in the outlet port (port 21) of
the air dryer. It prevents air from flowing back through the air dryer
and escaping out the purge valve during a compressor unload cycle.
Figure 1.14.
Figure 1.14
Pressure-Controlled Check Valve (PCCV): Used with System
Saver Series regeneration style air dryers. The PCCV is usually
mounted on the secondary air tank in place of an inlet check valve. It
lets air backflow from the secondary tank to the supply tank as long
as system pressure remains between the normal cut-in and cut-out
range of the governor. It allows additional air volume for generation
during the air dryer purge cycle. Not used with integrated or
separate purge tank style air dryers. Figure 1.15.
Figure 1.15
Pressure Relief Valve: A valve that protects the air dryer from
over-pressurization. On dryers with date codes earlier than 2295, it
is installed in the inlet port of the dryer (port 1) using a Street-Tee
fitting. On dryers with date codes later than 2295, the pressure
relief valve is attached directly to the air dryer. Figure 1.16.
Figure 1.16
Figure 1.12
Figure 1.13
1002149a
HEATER MAY BE STAINLESS
STEEL CLAD OR CERAMIC
1002150 a
Figure 1.14
Figure 1.15
Figure 1.16
1002151 a
1002152 b
AIR FLOW
DIRECTION
1002153 a