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Chicago Pneumatic Compressors
62 305 258 65
01/2008
Page 23
Section 8 - Operating incidents
The staff in charge of maintenance of the CP Compressor must become fully acquainted with this machine, in order to be able to easily
diagnose any anomaly. Under normal operating conditions, the CP compressor must provide full satisfaction.
A - Main incidents
The main incidents likely to occur are listed below, along with the remedies to be applied. The markers of the indicator lights relate to the
control panel.
Observed defects Possible causes Solutions
1. THE COMPRESSOR DOES NOT a) Main switch open. a) Close the switch.
START b) Phase missing. b) Check the circuits.
c) Fuse. c) Replace.
d) Insufficient voltage at motor terminals. d) Check the voltage and the connections.
e) Compressor under pressure. e) Check the vacuum device and change if
necessary. Check the water-tightness
of the minimum pressure valve.
2. THE COMPRESSOR a) Ambient temperature too high. a) Make openings or install ducts to
OVERHEATS evacuate the hot air (see Section 2).
b) Obstruction of the passage of cooling b) Clean the radiator (see Section 8).
through the oil radiator. c) Check and top-up oil level.
c) Oil level too low. d) Check that the oil filter is clean. Drain.
d) Oil circuit blocked. Replace the cartridge. Check the tightness
of connections.
3. THE COMPRESSOR STOPS WHEN a) Compressor motor overload. a) Check it is connected and the electric
THE MOTOR PROTECTION connections are tight. Check the pressure
UNIT TRIPS of the compressed air and the pressure
switch settings.
4. OPENING OF SAFETY VALVE a) To clean de-oiling cartridge. a) Change the de-oiling cartridge.
b) Valve of suction box out of use or b) Check valve, piston and joints of suction
not closed. box.
c) Faulty pressure switch, sensor c) Check that the pressure switch and
or solenoid valve. electrovalve and sensor pressure are in
d) Working pressure too high good working order.
5. EXCESSIVE OIL CONSUMPTION a) Blocked oil retainer. a) Check the oil return pipes.
b) Oil leaks in the CPVS compressor. b) Look for oil leaks and rectify.
c) Faulty oil separator element c) Replace the de-oiling cartridge.
(see Section 8-E)
6. DELIVERY PRESSURE TOO LOW a) Incorrect pressure settings. a) Adjust the pressure (see Section 3).
b) The desired output is higher than that b) Check consumption and possible leaks.
of the compressor.
c) Closed suction valve. c) Check electrovalve, pressure switch,
d) Release nozzle incorrectly adjusted valve.
(progressive adjustment option). d) Check setting.
7. COMPRESSED AIR OUTPUT a) Blocked air filter. a) Clean filter.
TOO LOW b) Adjusting electrovalve not working. b) Check setting.
8. EXCESSIVE NOISE OF UNIT a) Fixing bolts of compressor or motor a) Tighten.
have come loose.
b) Soundproof panels incorrectly closed. b) Check that they are closed.
c) Transport retainer blocks (red parts) c) Remove retainer blocks.
not removed.
9. THE COMPRESSOR STOPS a) Electromagnetic disturbance a) Add an interference suppression kit
UNTIMELY OR CREATES on the Airlogic controller. (contact the after sales department)
NON-EXISTING FAULTS