OLAER/OA-Technik
LHC AIR OIL COOLER
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Installation and servicing manual | English
9
Electrical connection
If the cooler is fitted with a thermo contact, use a relay if
the current load exceeds the maximum load for the thermo
contact.
Handling
Prior to initial start-up
Precaution
Make sure the air oil cooler is securely
fixed and correctly connected.
Be sure to use the correct fluid in the hydraulic motor as
well as a high-quality filter element to achieve a high level
of cleanliness. Make sure the hydraulic hoses and the tank
are clean.
We recommend that you proceed as follows prior to start-up:
1 Run the air oil cooler with the system fluid.
2 Filter the fluid before passing through the cooler.
See Technical data
for fluid compatibility, recommended
cleanliness level.
Prior to start up
Precaution
Do not start the air oil cooler if there is
a risk of damage to person, property or environment.
Check:
• that all cooler parts are free from damage,
• that the air oil cooler is correctly connected
• that the fan rotates freely (use hand force),
• that all hydraulic connections are tight,
• that the inside of the fan housing is free from objects
that could be thrown around and cause bodily injury or
damage to property.
At start-up
Check:
• that the direction of rotation of the fan and the air
flow is as indicated by the arrows on the label on the
fan housing,
• that the air oil cooler is free from abnormal noise and
vibrations,
• the air oil cooler is free from leaks, take adequate
measures
Consult
OLAER/OA-Technik
when using viscosity oil >
100 cSt (e.g. thick
lubricating oils).
In order to protect the cooler matrix, use a by-pass valve
when operating in cold start mode/with thick lubricating
oils.
See LHC brochure.
During operation
Caution
Risk of severe burns. The air oil cooler could
become extremely hot during operation. Make sure
that the air oil cooler is cool before touching.
Maximum permitted fluid temperature in the cooler matrix
is 120° C.
See Technical data
for recommended fluid tempera-
ture in the hydraulic motor.
The cooler matrix is designed for maximum allowed dynamic
working pressure 14 bar.
Do not operate the hydraulic motor at a low rpm and a
high pressure for a long period of time.
Note!
Use ear defenders when standing in the immediate
vicinity of an operating air oil cooler for long periods of time.
Preventive maintenance
Preventive maintenance work must be carried out at regular
intervals.
Important
Risk of damage to the hydraulic system. Contami-
nation, water and air will increase wear on components, which
could lead to breakdown. The most important practice to
observe when working on the system is cleanliness.
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 immediately.
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.
Cooler matrix
The air fins of the matrix can be cleaned by
blowing through with compressed air. If necessary a high-
pressure 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.
T h e P r of e s s i o n a l C h o i c e
Содержание LHC2
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