Preventive Maintenance; Maintenance - Parker QAC Manual De Instalación Y Servicio

Preventive maintenance

Preventive maintenance work must be carried out at regular
intervals. Make sure:
• that there is no abnormal noise or vibrations
• that air oil cooler is securely fixed
• that the cooler matrix is clean, debris will reduce the cooling
capacity
• that the air oil cooler is free from damage, replace damaged
components
• that the air oil cooler is free from leaks
• that warning labels are in good condition, replace any
damaged/missing label immediately.
Annually: Check the electrical installation. This may only be
made by a qualified electrician.
Cleaning
Caution Risk of bodily injury. Prior to cleaning, disconnect
all motor power supplies.
Caution Risk of severe burns. The air oil cooler could
become extremely hot during operation. Make sure the air
oil cooler is cool before touching.
Air oil cooler When cleaning the exterior of the cooler, for
instance using water, disconnect all power supplies. Be aware
of the electric motor protection standard.
Cooler matrix The air fins of the matrix can be cleaned by blo-
wing through with compressed air. If necessary a highpressure
washing system and degreasing agent can be used. When
using a high-pressure washing system point the jet parallel to
the air fins. See Figure 11.
Fan housing Remove the cooler matrix when cleaning the
inside of the fan housing. To clean the inside of the fan housing,
use compressed air. If necessary a degreasing agent can be
used. Blow with compressed air from the electric motor side
through the fan guard.

Maintenance

Parker shall not be held responsible for any consequences due to
repair and/or modification made by the customer.
Dismounting the cooler matrix
Caution Risk of severe burns. The air oil cooler could
become extremely hot during operation. Make sure the air
oil cooler is cool before touching.
Caution Risk of bodily injury. Disconnect the motor power
supply prior to maintenance.
1. Turn off the system.
2. Disconnect the electric motor power supply.
3. Make sure that the system is depressurized.
4. Disconnect the oil inlets and outlets.
5. Disconnect the flexible hydraulic hoses from the cooler matrix
6. Unscrew the screws with washers fixing the cooler matrix to
the fan housing. See Figure 12.
7. Remove the cooler matrix.
Mounting of the cooler matrix
1. Locate the cooler matrix.
2. Fit the cooler matrix to the fan housing. See Figure 12.
3. Connect the flexible hydraulic hoses to the cooler matrix.
See Figure 4 and Figure 5.
4. Connect the electric motor power supply
5. Proceed to Prior to start-up and At start-up.
Installation and Servicing Manual - QAC
Removing the electric motor and the fan
Caution Risk of severe burns. The air oil cooler could
become extremely hot during operation. Make sure the air
oil cooler is cool before touching.
Caution Risk of bodily harm. Prior to maintenance,
disconnect the electric motor power supply.
Note! Some fan hubs are fixed, see Figure 14, and some
are detachable, see Figure 15 A and Figure 15 B. The fan is
balanced together with the hub as from size QAC-033.
1. Turn off the system.
2. Disconnect the electric motor power supply.
3. Secure the electric motor.
4. Unscrew the screws with washer fixing the motor attach-
ment to the fan housing, see Figure 13. If the air oil cooler
is fitted with a motor bracket, unscrew the screws with
washers fixing the motor bracket to the feet.
5. Unscrew the screw with washer fixing the fan to the motor
shaft. See Figure 14. Pull with care the fan and hub from the
motor shaft. Use a pulley if required.
6. Unscrew the screws fixing the motor to the motor attach-
ment. See Figure 16. If the air oil cooler is fitted with motor
bracket, unscrew the screws with washers fixing the motor
to the motor bracket.
7. Remove the motor.
If further dismounting of the fan is required, label all details to
ensure correct mounting, first of all with regard to balance and
direction of rotation. See Figure 17.
Mounting of the electric motor and fan
Note! Some fan hubs are fixed, see Figure 14, and some are
detachable, see Figure 15 A and Figure 15 B. The fan is balanced
together with the hub as from size QAC-033.
1. If the air oil cooler is fitted with motor bracket, fit the motor
to the motor bracket.
2. Secure the electric motor to the motor attachment.
See Figure 16.
3. Fit the hub groove to the motor spline. Clean the hub
with ethanol and secure the fan/hub to the motor shaft.
If required, knock carefully with e.g. a rubber mallet. Use
Loctite® on the screw and secure the fan/hub on the motor
shaft with screws. See Figure 14.
4. Make sure that the fan is fitted to the motor shaft with out
too much play.
5. Place the motor attachment with fan, fan guard, motor and
bracket, if any, in the fan housing.
6. Adjust the fan guard and motor and secure the motor
attachment in the fan housing with screws. See Figure 13.
Secure the bracket with screws.
7. Make sure that the fan is centered and rotates freely (using
hand force). If required, adjust the location of the fan guard
and motor.
8. Check the screws for tightness.
9. Connect the electric motor power supply.
10. Proceed to Prior to start-up and At start-up.
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