Polaris RANGER XP 1000 2018-2019, Service Manual

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3.146
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
GAUGE PRESSURE RELATED
TROUBLESHOOTING
Normal compressor suction (low side) and discharge (high side) pressure at ambient temperatures of 86 - 96°F (30 -
38°C) and compressor speed of approximately 2000 rpm are:
• High pressure side pressure: 210 - 265 psi (1448 -
1827 kPa)
• Low pressure side pressure: 15 - 33 psi (103 - 228
kPa)
As a rule of thumb the high side pressure will be around eight times greater then the low side pressure.
SYMPTOM POSSIBLE CAUSE SOLUTION
Low pressure side too high
1. Expansion valve opens
too far.
Frost is present on the suction hose. Replace expansion valve.
2. Dective compressor.
The high and low pressure side gauge pressures
equalize when the magnetic clutch is engaged.
Replace compressor.
Low pressure side too low
1. Low refrigerant charge.
The high side pressure will be low and bubbles
may be present in sight glass on receive drier. Repair leaks and recharge the
refrigerant to the correct level.
2. Clogged or closed
expansion valve.
The expansion valve’s inlet side is frosted.
Moisture or other Contaminants can be the cause. Clean or replace the expansion
Valve.
3. Restriction between
drier and expansion valve.
Frost on the line between drier and expansion
valve. A Negative low pressure reading may be
shown.
Flush system or replace hose.
4. Thermostat malfunction.
The evaporator is frozen.
Adjust themostat’s temperature
setting or probe placement or
replace thermostat.
5. Receiver drier restriction Excessive frost on receiver drier.
Replace receiver drier.
High pressure side too high
1. Poor condenser
performance. Dirty or clogged condenser fins. Condenser fans
not Operating.
Clean fins, and / or repair the fan.
2. Excessive refrigerant. The high pressure side pressure will be high.
Evacuate and recharge to correct
refrigerant level.
3. Excessive oil charge. The high pressure side will be high.
Evacuate system. Remove oil
from condenser and compressor.
Add correct oil charge back into
compressor. Flush system with
nitrogen. Replace drier.
4. Air in system. Pressure is high on both high and low sides.
Evacuate and recharge with
Refrigerant.
5. Restriction in drier,
condenser or high
pressure line.
High pressure side will be high, and low pressure
side will be low.
Evacuate and flush system
replacing defective parts.
High pressure side too low
1. Low refrigerant charge.
The high side pressure will be low and bubbles
may be present in sight glass on receive drier. Repair any leaks and recharge
the refrigerant to the correct level.
System pressures equal
1. Clutch not operating. See compressor clutch related topics above.
2. Compressor not
pumping.
Equal high and low pressures. Replace compressor.
ENGINE / COOLING / HVAC SYSTEM