Hertz HGS 3-20 Bedienungshandbuch Seite 43

3-
COMPRESSOR DOES NOT PRODUCE AIR. (DOES NOT GET LOADED)
1- THE COMPRESSOR DOES NOT TRANSFER FROM STAR TO DELTA.
THE STAR DELTA TIME ADJUSTMENT MAY BE CHANGED. CHECK THE ADJUSTMENT (4-8 SECONDS). BY
ENGAGING THE COMPRESSOR, CHECK THE CONTACTORS AT THE STARTER BOX. AT THE END OF
ADJUSTED PERIOD, THE K3 (STAR) CONTACTOR SHOULD RELEASE AND K2 (DELTA) CONTACTOR
SHOULD EXTRACT. IF IT DOES NOT, THE CONTACTOR COIL CONNECTION COULD BE LOOSE OR THE
COIL COULD BE BURNED.
2- THE INTAKE VALVE IS DEFECTED
THE CLAPET OF THE INTAKE VALVE MAY BE STUCK, O-RINGS AND GASKETS MAY BE DAMAGED
3- MINIMUM PRESSURE VALVE IS DEFECTED
AS THE O-RING AND GASKETS OF THE MINIMUM PRESSURE VALVE ARE DAMAGED, IT CAN NOT KEEP
THE INTERNAL PRESSURE. IF INTERNAL PRESSURE DOES NOT RISE, THE INTAKE VALVE CAN NOT
OPEN AND THE COMPRESSOR CAN NOT BE ENGAGED. REPLACE THE GASKETS AND O-RINGS.
4- THE SOLENOID VALVE IS DEFECTED
CHECK WHETHER THE SOLENOID VALVE RECEIVES THE CONTROL ENERGY (IN DELTA OPERATION
POSITION). IF THE ENERGY IS NORMAL, THE SOLENOID COIL IS BURNED DOWN, REPLACE THE COIL.
5- CONTROL AIR HOSE LEAKS AIR
CHECK THE HOSE AND REPLACE IF DAMAGED.
4-
THE COMPRESSOR CAN NOT REACH THE MAXIMUM PRESSURE
1- THE CONSUMPTION OF YOUR SYSTEM IS HIGHER THAN COMPRESSOR CAPACITY
IN ORDER TO OBSERVE THAT THE COMPRESSOR CAN REACH THE MAXIMUM PRESSURE; CLOSE THE
OUTLET VALVE. OBSERVE THAT THE PRESSURE IS INCREASING AND THE COMPRESSOR WORKING
OFFLOAD. IF THE PRESSURE DOES NOT RISE, THERE MUST BE ANOTHER FAILURE. INFORM THE
SERVICE.
2- THE INTAKE FILTER CLOGGED
CHECK THE INTAKE FILTER BY STOPPING YOUR COMPRESSOR. REPLACE, IF CLOGGED
3- THE INTAKE VALVE IS DEFECTED
THIS MAY HAPPEN IN CASES WHEN THE INTAKE VALVE CLAPET GETS STUCK AND OPEN A LITTLE.
INFORM THE SERVICE.
4- THE COMPRESSOR UNIT IS DAMAGED
IF THE UNIT IS DAMAGED, A DIFFERENT OPERATION NOISE IS HEARD. INFORM THE SERVICE.
5-
THE COMPRESSOR EXCEEDS THE ADJUSTED PRESSURE (CAN NOT OPERATE IN IDLE).
1- THE PRESSURE ADJUSTMENT IS CHANGED
CHECK THE PRESSURE ADJUSTMENTS.
2- INTAKE VALVE IS DEFECTED
IT MAY GET STUCK WHEN THE INTAKE VALVE CLAPET IS OPEN. INFORM THE SERVICE.
3- THE SOLENOID VALVE IS DEFECTED
SEE ITEM 3.4
6-
THE COMPRESSOR EXCESSIVELY LOSES OIL
1- THE SCAVENGE LINE IS BLOCKED
WHILE THE COMPRESSOR OPERATING AT LOAD, OBSERVE THE OIL FLOW FROM OIL RETURN LINE
HOSE OR SCAVENGE SIGHT GLASS. IF THE OIL IS NOT PASSING, STOP THE COMPRESSOR. CLEAN THE
SCAVENGE ORIFICE WITH COMPRESSED AIR. OBSERVE THE OIL FLOW AFTER OPERATING THE
COMPRESSOR. COMPLETE THE LOST OIL
2- THE SEPARATOR ELEMENT IS DAMAGED
(IF THE SCAVENGE IS WORKING PROPERLY, THE PROBABILITY OF THE SEPARATOR ELEMENT BEING
DAMAGED INCREASES). IF YOU SEE OIL COMING FROM THE AIR RECEIVER DURING WATER
DISCHARGE, REPLACE THE SEPARATOR ELEMENT.
3- THERE IS LEAK AT THE OIL CONNECTIONS
CHECK THE OIL CIRCUIT CONNECTIONS OF THE COMPRESSOR. AT THE POINT OF LEAK, OIL DEPOSITS
MIGHT BE SEEN ON FLOOR. BY CHECKING THE COUPLING AND CONNECTIONS AT OIL CIRCUIT,
TIGHTEN THEM. IF THE OIL LEAK IS NOT PREVENTED, INFORM THE SERVICE.
7-
MAIN MOTOR OVERLOAD RELAY STOPS THE COMPRESSOR
1- OVERLOAD RELAY ADJUSTMENT IS CHANGED
OBSERVE THAT THE RELAY IS ADJUSTED ACCORDING TO THE MOTOR TEMPLATE. OBSERVE THAT (ON
FULL LOAD) THE MOTOR CURRENT IS NORMAL AND STABLE (THE CURRENT DIFFERENCE BETWEEN
THE PHASES SHOULD BE LESS THAN 10 %)
IF THE RELAY OPENS BEFORE THE ADJUSTED VALUE IT IS DEFECTED. REPLACE IT.
2- THE VOLTAGE IS LOW
SEE ITEM 2.2
3- THE COMPRESSOR EXCEEDS THE ADJUSTED PRESSURE
SEE ITEM 5.
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