Campbell Hausfeld CE4104 Mode D'emploi page 13

OPERATING INSTRUCTIONS (CONTINUED)
Recommended Break-In Period
The compressor should be run continuously at 90 PSI or lower for one hour to allow proper seating of the
piston rings.
1. Open drain cock completely and run the compressor for 60 minutes.
2. Turn off the compressor and close drain cock. The compressor is now ready for use.
If the compressor is run under humid conditions for short periods of time, the humidity will condense in
the crankcase and cause the oil to look creamy. Oil contaminated by condensed water will not provide
adequate lubrication and must be changed immediately. Using contaminated oil will damage bearings,
pistons, cylinders and rings and is not covered under warranty. To avoid water condensation in the oil,
periodically run the compressor with tank pressure near 120 psi for single stage compressors by opening the
drain valve or an air valve connected to the tank or hose. Run the pump for an hour at a time at least once
a week or more often if the condensation reoccurs.
IMPORTANT: Change oil after first 50 hours of operation and every 200 hours afterwards.
Pressure Switch, Start - Stop
NOTE: Single stage compressors have a maximum operating pressure of 140 psi. Do not alter pressure
settings on control components above this limit.
The compressor unit starts and stops based on preset pressure
switch settings of 110 psi cut-in and 140 psi cut-out. The
pressure switch contains an unloader which is a small valve
that vents air to allow the motor to start easily (see Figure 7).
The unloader valve on the pressure switch should hiss for
a short period of time when the compressor shuts off. This
relieves the head and the exhaust tubing of any pressure
and allows the compressor to start under no load. Because
Unloader
compressors have high starting torque the unloader is
(behind pressure switch)
necessary for proper starting of the compressor.
Safety Relief
The check valve is a one way valve that keeps the air in the
tank when the unit shuts off. The easiest way to determine
Figure 7 - Pressure Switch
if the check valve is working properly is to make sure that
the pressure switch unloader quits hissing after the compressor shuts off. The hissing should last for several
seconds and then quit.
Crankcase Breather
During severe operating conditions or initial start-up, some oil may accumulate at the crankcase breather
opening. This is normal and will diminish as the pump accumulates run time and the piston rings become
fully seated.
Draining Tank
Condensate must be drained from the tank daily, use
manual tank drain (see Figure 8).
Figure 8 - Manual Tank Drain
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