Section 22: HEATING AND AIR CONDITIONING
PA1564
22
FIGURE 22: COMPRESSOR ALIGNMENT
22040
9.1.7 Compressor
Maintenance
For the maintenance of the A/C compressor,
see the
Carrier Compressor “WORKSHOP
MANUAL
for MODEL 05G TWIN PORT
COMPRESSOR” included at the end of this
section.
CAUTION
Use only Castrol SW 68 (POE) oils with
refrigerant 134a.
9.1.8 Troubleshooting
Guide
A preliminary check may be made by simply
feeling the cylinder heads with the unit in
operation at ambient temperatures of 35
o
F (2
o
C)
and over. The cylinder heads are internally
divided into suction and discharge valves. The
lower half of the cylinder head is the suction
side, and it should be relatively cool to the touch,
as opposed to the hot upper discharge side. If a
valve plate or head gasket is blown, or a
compressor unloader is stuck open, partially
compressed refrigerant vapor will be circulated
between the suction and discharge sides of the
head. The affected cylinder head will then have
a relatively even temperature across its surface
and be neither as hot as the normal discharge
temperature nor as cool as the normal suction
temperature.
Blown Head Gaskets
Symptom:
*
Loss of unit capacity at low temperature.
*
Even cylinder head temperature.
Cause:
*
Improperly torqued cylinder head bolts.
*
Improperly positioned gasket at assembly.
*
Warped cylinder head.
*
Severe liquid refrigerant floodback.
Blown Valve Plate Gaskets
Symptom:
*
Loss of unit capacity at medium and low
temperatures.
*
Very hot cylinder head surface.
*
Higher than normal suction pressure.
Cause:
*
Improperly torqued cylinder head bolts.
*
Severe liquid refrigerant floodback.
*
Oil slugging caused by an overcharge of oil
or flood starts.
*
Discharge valves not seated properly (liquid
drainback during shutdown).
Broken Suction Valves
Symptom:
*
Loss of unit capacity at all temperatures.
*
Compressor unable to pull extremely low
vacuum with suction service valve
frontseated.
Cause:
*
Repeated liquid refrigerant floodback.
*
Flooded
starts.
*
Overcharge of oil.
*
Discharge valves not seated properly (liquid
drainback during shutdown).
*
Expansion valve not controlling properly.
Unloader Valve Stuck Open
Symptom:
*
Loss of unit capacity at all temperatures.
*
Higher than normal suction pressure.
*
Even cylinder head temperature.
Содержание LE MIRAGE XLII BUS SHELLS
Страница 1: ...COACH MANUFACTURER MAINTENANCE MANUAL LE MIRAGE XLII BUS SHELLS PA1564 1ST EDITION...
Страница 12: ...Section 00 GENERAL INFORMATION 10 PA1564 FIGURE 13 METRIC US STANDARD CONVERSION TABLE 00005...
Страница 13: ...Section 00 GENERAL INFORMATION PA1564 11 FIGURE 14 CONVERSION CHART 00006...
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Страница 348: ...Page No 18 Manual No NDS8 Spicer Speciality Axle Division Technical Publications Spicer Speciality Axle Division TP1193...
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Страница 380: ...Section 12 BRAKE AND AIR SYSTEM PA1564 22 FIGURE 39 AIR OPERATED BRAKING SYSTEM W5...
Страница 387: ...Section 12 BRAKE AND AIR SYSTEM PA1564 29 FIGURE 46 ABS 6S 5M CONFIGURATION...
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Страница 1083: ...Section 22 HEATING AND AIR CONDITIONING PA1564 15 FIGURE 16 REFRIGERANT CIRCUIT CENTRAL SYSTEM 22247...
Страница 1086: ...Section 22 HEATING AND AIR CONDITIONING PA1564 18 FIGURE 17 DOUBLE SWEEP EVACUATION SET UP...
Страница 1106: ...Section 22 HEATING AND AIR CONDITIONING PA1564 38 FIGURE 39 REFRIGERANT CIRCUIT SMALL SYSTEM 22350...
Страница 1108: ...Section 22 HEATING AND AIR CONDITIONING PA1564 40 FIGURE 42 CENTRAL HEATING SYSTEM COMPONENTS 22338...
Страница 1118: ...Section 22 HEATING AND AIR CONDITIONING PA1564 50 FIGURE 54 HEATER LINE SHUTOFF VALVES WE...
Страница 1119: ...Section 22 HEATING AND AIR CONDITIONING PA1564 51 FIGURE 55 SMALL HEATING SYSTEM COMPONENTS 22337...
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Страница 1125: ...Compressor 62 11052 Rev A WORKSHOP MANUAL for MODEL 05G TWIN PORT COMPRESSOR R...
Страница 1126: ...WORKSHOP MANUAL COMPRESSOR MODEL 05G TWIN PORT...
Страница 1149: ...Compressor 62 11053 Rev B SERVICE PARTS LIST for MODEL 05G TWIN PORT COMPRESSOR 1 2 3 4 5 6 R...
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Страница 1205: ...Section 24 LUBRICATION PA1564 5 FIGURE 1 LUBRICATION AND SERVICING POINTS ON INDEPENDENT FRONT SUSPENSION VEHICLES 24036_1...
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Страница 1223: ...Section 26 XLII SLIDE OUT PA1564 11...
Страница 1224: ...Section 26 XLII SLIDE OUT PA1564 12 FIGURE 16 KEYLESS BUSHING INSTALLATION INSTRUCTION...