Ingersoll Rand TS1A-13A Manual De Manejo Y Mantenimiento página 49

SYMPTOM
DANGER! – DO NOT ATTEMPT ANY REPAIR UNLESS YOU HAVE PROPER ELECTRICAL TRAINING, QUALIFICATIONS, AND
Fan is not operating properly
Dewpoint is high
Evaporator low temperature
warning warning
Fluctuating high side and low
side pressure
Gurgle or pulslng noise at
expansion device or liquid line
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12.0 FAULT FINDING
FAULT
Fan rotation is incorrect
Defective fan pressure switch (2RPS)
2OL fan overload tripped
Defective fan contactor (2M)
Defective internal fan temperature switch
(TK)
High side and low side pressure is normal
High side pressure is normal, low side
pressure is high pressure is high
High side pressure is high, low side
pressure is high or normal
High side pressure is low, low side
pressure is high pressure is high
High side and low side pressure are
correct, evaporator superheat is high.
Low side pressure is low, compressor is
cool to the touch cool to the touch
High side pressure is high, low side
pressure is low
Expansion valve is hunting
Air or non–condensibles in system
Air or non–condensibles in system
REMEDY
EQUIPMENT!
Check wiring. If 3–phase, swap any two fan wires at the 2OL. If
1–phase, replace fan.
Remove power and check 2RPS fan pressure switch for continuity
above 17 barg (247 psig) – replace if open.
Check trip set point. Reset overload.
Check for 115 volts at 2M contactor coil and 2RPS switch closed –
replace contactor if contacts are open.
Remove power, allow fan to cool (this may take 1–2 hours) and
check fan temperature switch (TK) for continuity – replace fan if
open
Discharge and inlet air connections have been reversed.
Adjust hot gas valve.
Drain valve is not working properly.
Defective compressor – replace.
Inlet temperature, and/or flow is too high. Confirm dryer size for
application.
Condenser coil is dirty – clean coil.
Fan is not operating properly.
Dryer is over charged, or has not been charged with refrigerant as a
liquid.
Air or non–condensibles in system – recover refrigerant, replace
filter drier, evacuate, & recharge.
Expansion device is blocked open.
Defective compressor valves – replace compressor.
Adjust thermal expansion valve(s).
Adjust hot gas valve.
Dryer is operating in an ambient environment of less than 2_C
(35_F).
Moisture in the system – recover refrigerant, replace filter drier,
evacuate, & recharge.
Restriction in liquid line, filter drier, or expansion device – remove
restriction or replace defective component
Check valve bulb is properly clamped in the correct position (3
o'clock or 9 o'clock, with bulb notch against pipe) and bulb insulated.
Check air distribution on condenser coil is reasonably even –
remove any obstructions.
Replace expansion valve.
Recover refrigerant, replace filter drier, evacuate, & recharge.
Recover refrigerant, replace filter drier, evacuate, & recharge.
TS1A–13A
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