Chicago Pneumatic CPVS 75, CPVS 60, CPVS 40, CPVS 50 instruction manual Main incidents, See -E

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

Chicago Pneumatic Compressors	01/2008
62 305 258 65	Page 23