Parker LHC, Installation And Servicing Manual

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Installation and servicing manual
Air Oil Coolers, LHC
14 Parker Hannifin Corporation
Hydraulics Group
Catalogue HY10-6004-UM/EU
Preventive maintenance/Maintenance
Preventive maintenance
Preventive maintenance work must be carried out at regular
intervals. Make sure:
• that there is no abnormal noise or vibrations,
• that the air oil cooler is securely fixed,
• that the cooler matrix is clean as debris will reduce the cooling
capacity,
• that the fluid cleanliness is as recommended, replace if
required,
• that the air oil cooler is free from damage, replace damaged
components,
• that the air oil cooler is free from leaks, take appropriate
measures,
• that warning labels are in good condition, replace any
damaged/missing label immediatelyly.
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 in-
stance 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 blowing 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 6.
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
Olear 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 7.
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 7.
3. Connect the flexible hydraulic hoses to the cooler matrix.
See Figure 4
4. Connect the electric motor power supply
5. Proceed to
Prior to start-up and At start-up.
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.
Important Risk of damage to the hydraulic system. Contamination,
water and air will increase wear on hydraulic components, which
could lead to breakdown. The most important practice to observe
when working on the hydraulic system is cleanliness.
Note! Some fan hubs are fixed, see Figure 194 , and some
are detachable, see Figure 10 A and Figure 10 B. The fan is
balanced together with the hub as from size LAC-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
attachment to the fan housing, see Figure 8 .
5. Unscrew the screw with washer fixing the fan to the motor
shaft.
See Figure 9
. 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 11.
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 12.
Mounting of the electric motor and fan
Note!
There are models with fixed hub ( see Figure 9 ) and models
with detachable hub ( see Figure 10 A and Figure 10 B ). The fan is
balanced together with the hub as from size LHC-033.
1. Secure the hydraulic motor to the motor attachment.
See Figure 11.
2. Fit the hub groove to the motor spline. Lube 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 9.
3. Make sure that the fan is fitted to the motor shaft without too
much play.
4 Place the motor attachment with fan, fan guard and motor in
the fan housing.
5. Adjust the fan guard and motor and secure the motor
attachment in the fan housing with screws. See Figure 8.
6. Make sure that the fan is centered and rotates freely (using
hand force). If required, adjust the location of the fan guard
and motor.
7. Check the screws for tightness.
8. Connect the hydraulic motor power supply.
9. Proceed to Prior to start-up and At start-up..