Description; Installation - OLAER OA Technik LOC Manual De Instalación Y Mantenimiento

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Description

The LOC cooling system consists of an air oil cooler, a DC
motor and a gerotor type of low pressure pump from our QPM
series. In addition, the cooling system can be provided with
a filter for cleaning of the oil. LOC cooling system is avail-
able with cooling capacity 2.7 - 44.8 kW and nominal oil
flow 20 - 80 l/min.
Cooling system identification plate
The type plate of the cooling system is located on the fan
housing. See Figure 2.
The type plate contains the following information:
A
– Part number
B
– Designation
C
– Serial number
D
– Date of delivery
(year and week, e.g. 1018, i.e. year 2010 and week 18)
Replace a damaged or missing type plate as soon as possible.
Filter unit identification plate
The type plate on the filter unit contains information about:
• P/N of the filter element
• Designation of filter element (04" HP).

Installation

Lifting
Caution Risk of bodily injury. To prevent bodily injury
when lifting the unit, ensure correct lifting technique
is used. Make sure that all lifting devices are working proper-
ly and approved for the weight of the cooling system.
The LOC cooling system as from size 033 can
accommodate lifting eyes. Lifting eyes are available from
OLAER/OA-Technik on request.
Mounting
Precaution Risk of bodily injury. Make sure that all
parts of the cooling system are firmly secured.
An upright installation of the cooling system standing on
its feet is recommended. To prevent bodily injury, make sure
the cooling system is securely fixed.
A free space corresponding to a minimum of half the
height of the matrix should be available in front of and
behind the cooling system to allow for good airflow, i.e.
optimal cooling capacity as well as low acoustic pressure
level. See Figure 3.
In cases where a filter unit is provided, a space correspon-
ding to at least the size of the filter element should be avail-
able above the filter unit to allow for replacement of the fil-
ter element. See Figure 3.
The acoustic pressure could reach 57-86 dB(A) LpA at 1 m
distance in normal operating conditions. Inappropriate loca-
OLAER/OA-Technik LOC COOLING SYSTEM |
Installation and servicing manual | English
tion of the cooling system or operation in extreme condi-
tions could generate increased acoustic pressure and reduce
cooling capacity. Consult your local OLAER/OA-Technik
office.
In order to avoid that the tank empties when replacing the
filter element, make sure that the cooling system oil level is
above that of the tank. If this is not possible, install a con-
trol valve or shut-off valve in the system inlet and outlet.
Connection of the cooling system
Connect the cooling system using flexible hydraulic hoses to
the hydraulic system. Make sure that all connections and
hoses are sized according to the system pressure, flow, tem-
perature and type of oil.
Connect the hydraulic hoses as illustrated in Figure 4
A
– Inlet
B
– Outlet for S by-pass, single-pass
C
– Outlet for T by-pass, two-pass
D
– Connection for thermo contact
The sizes of connections are cooling system dependent.
Maximum permitted oil temperature is 100°C.
Flow chart, see Figure 5.
To achieve the very best pump capacity, place the cooling
system below tank oil level (max. 5 meter) and as close to
the tank as possible. When installed above tank oil level,
minimize the difference in height.
The size of the inlet line should not be inferior to the
pump connection size. A larger size is recommended.
Avoid flow rates in excess of 1 m/s in the pump inlet line.
Maximum pressure on the pump suction side is 0.5 bar.
Electrical connection
Danger Electrical shock hazard. All electrical connec-
tions must be made by a qualified electrician!
Prior to connecting the motor to the electrical supply sys-
tem, make sure the specification on the electric motor rating
plate corresponds to the mains supply voltage and frequency.
The electric motor should be installed according to gene-
ral rules and electrical safety regulations and must be instal-
led by a qualified electrician.
Caution Be careful when connecting the equipment.
Improperly made connections, damaged cables, etc.
could cause parts to become current carrying or result in
incorrect direction of rotation of the electric motor, fan and
pump. See Figure 6.
Important Do not exceed the maximum rated current for
the electric motor, see electric motor rating plate.
Note! An electric motor overload protection is recommended.
In extremely humid environments, especially when the
operation is intermittent, water condensation could build