7
TROUBLE SHOOTING CHART
PROBLEM: The unit will only pull down to 0 pressure or a slight vacuum.
SOLUTION: Remove refrigerant hose from Suction port. Place a cap on this port:
1.
If the unit pulls a vacuum, then the low side leak is somewhere between the
refrigerant hose and the equipment being recovered.
2.
If the unit does not pull a vacuum, then suspect an internal low side leak on
the CR unit.
PROBLEM: The unit starts for a few minutes, then shuts-off.
SOLUTION: The high pressure switch has activated. Make sure the discharge
valve is open. Make sure the recovery tank valve(s) are open. Check for any
other restrictions on the discharge port of the unit. Correct restriction. Restart
the unit.
PROBLEM: The unit does not start and the thermal circuit breaker activates.
SOLUTION: If the unit fails to start, open the suction valve and rotate the center
valve to the “SELF-CLEARING” position for 5-10 seconds. Then rotate back to
the “RECOVERY” position. Reset circuit breaker. Push the START switch.
PROBLEM: The unit recovers at a very slow pace.
SOLUTION: Check the suction port filter. Replace or clean.
HELPFUL HINTS
•
If the refrigerant to be recovered is from equipment with high contamination
levels of acid, moisture, etc.… it is recommended to utilize an in-line filter
drier placed before the suction port of the CR600 unit. An Alco EKO52 or
equivalent filter drier would provide adequate protection.
•
If large amount of liquid refrigerant (greater than 70lbs.) are present, it would
be recommended that Liquid Push-Pull method be performed first, then
follow by Direct liquid or vapor recovery.
•
A ball valve or an anti-blow fitting should be used on the end of the discharge
hose. This will prevent unnecessary loss of recovered refrigerant. It will also
protect the user from liquid refrigerant contact. Read General Safety instruc
tions on refrigerant contact.
• When recovering refrigerant under low ambient temperature conditions, add
heat o devices such as receivers, accumulators, etc.... to help vaporize the
refrigerant. This will greatly speed up the recovery process.
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