Installation; Handling - Parker QAC Manual De Instalación Y Servicio

Installation

Lifting
Caution Risk of bodily injury. To prevent physical harm
when lifting the unit, ensure correct lifting technique. Make
sure that all lifting devices are free from damage and ap-
proved for the weight of the air oil cooler.
QAC Air oil coolers as from size 033 have lifting eyes as a standard.
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, an
upright installation standing on its feet is recommended. 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.
Connection of cooler matrix
Connect the cooler matrix using flexible hydraulic hoses both to
and from the cooler. Make sure that all connections and hoses are
sized according to the system pressure, flow, temperature and
fluid. Connect the cooler matrix as illustrated below.
See Figure 4 or Figure 5.
A – Inlet.
B – Outlet for single-pass.
C – Outlet for two-pass.
D – Thermo contact connection.
Dimensions on connections are cooler matrix size dependent.
Connection chart, see Figure 6.
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.
Electrical connection
Danger Risk of electrical shock. All electrical connections
must be made by a qualified electrician!
Prior to connecting the motor to the electricity supply system, make
sure the information on the motor label corresponds to the line
voltage and frequency. The motor should be installed according
to general and electrical safety rules and should be made by a
qualified electrician.
Precaution Be careful when connecting. Improperly
made connections, damaged cables, etc. could cause
components to become live or result in the incorrect di-
rection of rotation of the electric motor.
• Outer connection of three phase motor.
See Figure 8 or Figure 9.
• Inner connection of three phase motor. See Figure 10.
Example for motor: 220-240 V
Installation and Servicing Manual - QAC
/380-420 V Y.
Δ
The direction of rotation of three phase motors is altered by
changing connection of two phases. If the cooler is fitted with a
thermo contact, use a relay if the current load exceeds the maxi-
mum load for the thermo contact.
Note! A motor overload protection is recommended. The size of the
overload protection/fuse, depends on fan size and air flow across
the cooler. Contact Parker concerning motor protection/fuse size.
Note! Some motors are fitted with plugged holes, which can be
used for draining condensed water.

Handling

Prior to initial start-up
Precaution Check that the air oil cooler is securely fixed
and correctly connected.
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 specification for recommended fluid compatibility.
Prior to start up
Precaution Do not start the air oil cooler if there is a risk of
personal injury or damage to, property or environment.
Check:
• that all air oil cooler parts are free from damages
• 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
correspond to indications on the fan housing
• that the air oil cooler is free from abnormal noise and vibrations
• that the air oil cooler is free from leaks.
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 QAC 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. Do not overload the electric motor. See label on electric
motor rating plate. The cooler matrix is designed for maximum
allowed dynamic working pressure 14 bar.
Note! Use hearing protection when standing in the immediate
vicinity of an operating air oil cooler for long periods of time.
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