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 |
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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 |
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| necessary. Check the |
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| of the minimum pressure valve. |
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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 |
| c) Oil level too low. | d) Check that the oil filter is clean. Drain. |
| d) Oil circuit blocked. | Replace the cartridge. Check the tightness |
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| of connections. |
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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 |
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| switch settings. |
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4. OPENING OF SAFETY VALVE | a) To clean | a) Change the |
| 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. |
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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 |
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| (see Section |
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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. |
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| c) Closed suction valve. | c) Check electrovalve, pressure switch, |
| d) Release nozzle incorrectly adjusted | valve. |
| (progressive adjustment option). | d) Check setting. |
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7. COMPRESSED AIR OUTPUT | a) Blocked air filter. | a) Clean filter. |
TOO LOW | b) Adjusting electrovalve not working. | b) Check setting. |
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8. EXCESSIVE NOISE OF UNIT | a) Fixing bolts of compressor or motor | a) Tighten. |
| have come loose. |
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| b) Soundproof panels incorrectly closed. | b) Check that they are closed. |
| c) Transport retainer blocks (red parts) | c) Remove retainer blocks. |
| not removed. |
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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) |
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Chicago Pneumatic Compressors | 01/2008 |
62 305 258 65 | Page 23 |