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D - Fan
Replacement of the complete fan is recommended if one or more
blades are deformed or broken If replaced, check the fan rotation
direction reversal of the rotation direction will reduce machine
cooling and damage the motor in time.
E - Oil and air cooler
1 -Air-cooled
The aluminium air and oil cooler is a vital system in the CP
Compressor. It needs special care. In order to avoid deforming or
destroying the tube bundles, cooler connectors and lines must be
dismantled or assembled while maintaining in rotation the cooler
sleeves using a wrench. The outer surface of the tube bundle must
always be clean to insure the best heat exchange. If leaks occur,
seek their source by:
- Stopping CP Compressor,
- Cleaning any greasy locations,
- Seeking leaks using conventional methods (e.g.: soap solu-
tion, etc.).
If you need to dismount the coolers, remove the front or rear post
(fig.23, item. 1) and pull them out of the compressor like drawers.
Pressurized shutdown retains the pressure in the machine circuit
for a few moments so that any leak can be more easily located.
Fig. 23
1
Item. 1 : removable post (front or rear) for replacement of coolers,
if needed
F - Oil separator
(see B chapter 1)
The oil separator's lifespan depends on the cleanliness of the air
coming into the compressor, on regular oil filter changes, on the
quality of the oil used, on the attention with which the oil tank
condensate drains are carried out and on the ambient temperature
of the room. (see notice on the electronic controler for resetting the
time).
Chicago Pneumatic Compressors
62 305 799 65
Fig. 24
Off-centre
hole to
swivel the
cover
Check that the suction oil return tube is clean (transparent) to avoid
clogging of the nozzle (see fig. 22).
Excessive oil consumption
The presence of excess oil in the discharge air, a rapid drop in
level show a probable deterioration in the oil separator that must
be changed.
The unit must first be checked to make sure that there is no oil
loss and that the oil return is working properly.
Changing the oil separator
Disassemble the "VICTAULIC" union up-line from the minimum
pressure valve (See Fig. 24, Item 1). Disassemble the regulating
and oil return connections situated on the top flange of the tank.
Unscrew the screws holding the tank cover and remove the cover
(See Fig. 24, Item 2).
- if the former oil separator has to be reinstalled, use two new
gaskets,
- take the outmost care and attention when installing the oil
separator to avoid possible damage,
- the replacement oil separator is delivered complete with its two
gaskets for the two sides of the flange,
- slight undulations in the flange will flatten out when the screws
are tightened hard,
- apply a tightening torque of 15 m-kg to tighten the cover screws,
- re-screw the flange onto the cooler,
- connect the regulation system and oil return,
- refit the "VICTAULIC" union.
1
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11/2008
Page 23
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