Installation; Handling - Parker LHC Manual De Instalación Y Servicio

Catalogue HY10-6004-UM/EU
Installation/Handling

Installation

Lifting
Caution Risk of bodily injury. To prevent bodily harm when
lifting the unit, ensure correct lifting technique. Make sure
that all lifting devices are free from damage and approved
for the weight of the air oil cooler.
Air oil coolers as from size 033 are prepared for installation of
lifting eyes. Lifting eyes are available from Parker on request.
Mounting
Precaution Risk of bodily harm. Make sure that the air oil
cooler is securely fixed.
The air oil cooler can be mounted in any position. However, upright
is recommended (standing on its feet). A free space corresponding
to a minimum of half the height of the matrix (A) should be available
in front of and behind the air oil cooler to allow for good air flow, i.e.
optimal cooling capacity as well as low acoustic pressure level.
See Figure 3.
Inappropriate location of the air oil cooler or operation under extreme
conditions could generate increased acoustic pressure level and
reduce cooling capacity.
Important Assembly and hydraulic motor installation should be
made in a clean environment.
Connection of the cooler matrix
Connect the cooler matrix using flexible hydraulic hoses both to
and from the cooler matrix. Connections and hoses should be
sized according to the system pressure, flow, temperature and
type of system fluid. Connect the cooler matrix as illustrated
below. See Figure 4.
A – Inlet.
B – Outlet for single pass.
C – C - Outlet for two pass.
D – Thermo contact connection.
Dimensions on connections are cooler matrix size dependent.
Connection chart, see Figure 5.
Important The cooler matrix is designed for maximum dynamic
working pressure 14 bar. When the cooler is installed in a return
line, there should be no pressure spikes. If this is not possible,
an offline cooling system should be used.
Connection of the hydraulic motor
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.
Use flexible hydraulic hoses both to and from the hydraulic
motor. Connections and hoses should be sized according to
system pressure, flow, temperature and type of system fluid.
Prevent throttling and do not use flexible hydraulic hoses with a
narrow bending radius.
Connection size depends on hydraulic motor size. Adjust the
oil flow to the hydraulic motor. The maximum rpm of the motor
and fan must not be exceeded as this can cause a breakdown.
Be careful, incorrect connection will cause incorrect direction of
rotation of the motor and fan see arrow for direction of rotation.
The LHC air oil cooler is fitted with an externally drained hydrau-
lic motor as standard. Connect the hydraulic motor drain hose
to the tank. Maximum pressure in drain port is 5 bar.
Installation and servicing manual
Air Oil Coolers, LHC
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.m.
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
Consult Parker 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 be-
come 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 temperature
in the hydraulic motor.
The cooler matrix is designed for maximum allowed dynamic wor-
king 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.
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Parker Hannifin Corporation
Hydraulics Group