Chicago Pneumatic Compressors
62 305 454 65
01/2008
Page 25
Section 7 -
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.
f) Low temperature.
f) Maintain temperature
≥
2 °C
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 cooler (
see Section 5 - D
).
through the oil cooler.
c) Oil level too low.
c) Check and top-up oil level.
d) Oil circuit blocked.
d) Check that the oil filter is clean. Drain.
Replace the cartridge.
3. THE COMPRESSOR STOPS WHEN
a) Compressor motor overload.
a) Check the electric connections are
THE MOTOR PROTECTION
tighten. Check the pressure of the
UNIT TRIPS
compressed air and the pressure
settings.
b) Phase unbalance
b) Check the phases currents
4. OPENING OF SAFETY VALVE
a) To clean separator cartridge.
a) Change the separator 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.
solenoid valve and pressure sensor
d) Working pressure too high
are in good working order.
5. EXCESSIVE OIL CONSUMPTION
a) Blocked oil retainer.
a) Check the oil return pipes.
b) Oil leaks in the CP compressor
b) Look for oil leaks and rectify.
compressor.
c) Replace the separator cartridge.
c) Faulty oil separator element
(
see Section 5 - E
)
6. DELIVERY PRESSURE TOO LOW
a) Incorrect pressure settings.
a) Adjust the pressure (
see Section 3
).
b) The desired output is higher than the
b) Check consumption and possible leaks.
one of the compressor.
c) Closed suction valve.
c) Check solenoid valve, pressure setting
d) Pressure regulator incorrectly adjusted
valve.
(modulating control option).
d) Check setting.
7. COMPRESSED AIR OUTPUT
a) Blocked air filter.
a) Clean filter.
TOO LOW
b) Adjusting solenoid valve 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 on the
a) Add an interference suppression kit
UNTIMELY OR CREATES
ES 3000 electronic controller.
(contact the after sales department)
NON-EXISTING FAULTS
