Ingersoll-Rand IRN 20HP, Operation And Maintenance Manual

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MAINTENANCE
36
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1. Stop compressor, lock and tag out machine.
DISASSEMBLING THE UNIT
The unit has been designed and constructed to guarantee continuous
operation.
The long service life of some components such as the fan and
compressor depends on good maintenance.
The unit must only be disassembled by a refrigerant specialist.
Refrigerant liquid, refrigeration components and lubricating oil inside
the refrigeration circuit must be recovered in compliance with current
norms in the country where the machine is installed.
RECYCLING DISASSEMBLY
Frame and panels
Steel / epoxy resin polyester
Heat exchanger (cooler)
Stainless steel
Pipes Copper
Insulation
Gum synthetic
Compressor Steel / copper / aluminium / oil
Condenser
Aluminium
Refrigerant
R134a
Valve
Steel
REFRIGERANT LEAKS IN THE REFRIGERATION CIRCUIT
The unit is despatched in perfect working order, already charged.
Refrigerant leaks may be identified by tripping of the refrigeration
overload protector .
IF A LEAK IS DETECTED IN THE REFRIGERANT CIRCUIT, SEEK
TECHNICAL ASSISTANCE.
REFRIGERANT CHARGING
THIS OPERATION MUST ONLY BE PERFORMED BY A
REFRIGERANT SPECIALIST.
WHEN REPAIRING THE REFRIGERANT CIRCUIT, COLLECT ALL
THE REFRIGERANT IN A CONTAINER AND DISPOSE OF IT IN
THE APPROPRIATE MANNER.
CHARACTERISTICS OF REFRIGERANT R134A
In normal temperature and pressure conditions the above refrigerant
is a colorless, class A1/A1 gas with TVL value of 1000ppm (ASHRAE
classification).
If a refrigerant leak occurs, thoroughly air the room before commencing
work.
TROUBLESHOOTING
TROUBLE CAUSE
ACTION
Solenoid
condensate
valve will not
close.
1. Debris in solenoid
valve prevents
diaphragm from
seating.
1. Remove solenoid
valve, disassemble,
clean and reassemble .
2. Short in electrical
component.
2. Check and replace
power cord or timer as
needed.
Drain timer will
not operate.
1. No electrical
supply.
1. Apply power.
2. Timer malfunction 2. Replace timer.
3. Clogged port. 3. Clean valve.
4 Solenoid valve
malfunction.
4. Replace solenoid
valve.
5 . Clogged strainer. 5. Clean strainer.
MAINTENANCE
Periodically clean the screen inside the valve to keep the drain
functioning at maximum capacity. To do this, perform the following
steps:
1
.
Close the strainer ball valve completely to isolate it from the air
receiver tank.
2. Press the TEST button on the timer to vent the pressure remaining
in the valve. Repeat until all pressure is removed.
CAUTION! High pressure air can cause injury from flying debris.
Ensure the strainer ball valve is completely closed and pressure
is released from the valve prior to cleaning.
3. Remove the plug from the strainer with a suitable wrench. If you hear
air escaping from the cleaning port, STOP IMMEDIATELY and repeat
steps I and 2.
4. Remove the stainless steel filter screen and clean it. Remove any
debris that may be in the strainer body before replacing the filter screen.
5. Replace plug and tighten with wrench.
6. When putting the Electric Drain Valve back into service, press the
TEST button to confirm proper function.