Laird OL 4503 Installation instructions

OL 4503 Oil-Air Cooling Unit
Specification and User Manual Version 3.5

2
Laird Thermal Systems.
Prumyslová 497
462 11 Liberec
Czech Republic
Phone: [phone]
www.lairdthermal.com
Any information furnished by Laird and its agents, whether in specifications, data sheets, product catalogues or otherwise, i
s believed to be (but is not warranted as being) accurate and
reliable, is provided for information only and does not form part of any contract with Laird. All specifications are subject
to change without notice. Laird assumes no responsibility and
disclaims all liability for losses or damages resulting from use of o
r reliance on this information. All Laird products are sold subject to the Laird Terms and Conditions of sale (including Laird’s
limited warranty) in effect from time to time, a copy of which will be furnished upon request.
© Copyright
2018-2021 Laird Thermal Systems, Inc. All rights reserved. Laird™, the Laird Ring Logo, and Laird Thermal Systems™ are trademarks or registered trademarks of Laird Limited
or its subsidiaries.

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Table of Contents
Revision History.................................................................................................................................... 5
1. About this Manual ......................................................................................................................... 6
1.1 Terms of Guarantee ......................................................................................................................6
1.2 Contact Information.......................................................................................................................7
2. Product Identification ................................................................................................................... 8
2.1 Unit Specifications.........................................................................................................................8
2.2 Identification Plate.........................................................................................................................8
3. Safety Regulations........................................................................................................................ 9
3.1 Hazard classes..............................................................................................................................9
3.2 Safety Symbols .............................................................................................................................9
3.3 Hints for Safe Operation..............................................................................................................10
3.4 Prevent Hazards .........................................................................................................................10
3.5 Hints Regarding the Electrical Equipment ..................................................................................10
3.6 Environmental Issues..................................................................................................................11
3.7 Protective Clothing ......................................................................................................................11
3.8 Safety Equipment........................................................................................................................11
3.9 Safety and Signaling Equipment included in the Unit .................................................................11
3.10 Guards.......................................................................................................................................12
3.11 Caution Labels ..........................................................................................................................13
3.12 In Case of Accidents .................................................................................................................13
3.12.1 First aid at accidents with oil ..............................................................................................13
4. Product Description.................................................................................................................... 14
4.1 Intended Use...............................................................................................................................14
4.2 Use not in Conformance with the Intended Use .........................................................................14
4.3 Unit Components ........................................................................................................................15
4.4 Cooling Circuit.............................................................................................................................15
4.5 Specifications ..............................................................................................................................16
Dimensions and weight .................................................................................................................16
Performance data..........................................................................................................................16
Environmental conditions ..............................................................................................................16
Settings .........................................................................................................................................16
4.6 Setting-up Requirements ............................................................................................................17
Installation Location ......................................................................................................................17
Environmental Conditions .............................................................................................................17
4.7 Infrastructure ...............................................................................................................................17
5. Transport...................................................................................................................................... 18
5.1 Safety Indications for Transportation and Setting-up..................................................................18
5.2 Transportation of the Unit............................................................................................................18
5.3 Unpacking ...................................................................................................................................18
6. Initial Operation........................................................................................................................... 19

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6.1 Safety Indications Related to Initial Operation............................................................................19
6.2 Setting to Work............................................................................................................................19
6.3 Cooling Circuit Connection and Filling........................................................................................20
6.4 Electrical Connections.................................................................................................................22
6.5 Carrying out Setting to Work.......................................................................................................22
6.6 Daily Start-up ..............................................................................................................................23
6.7 Setting to work after Storage ......................................................................................................23
7. Controlling the Unit..................................................................................................................... 24
7.1 Safety Indications for Controlling the Unit...................................................................................24
7.2 Switching on the Unit ..................................................................................................................24
7.3 Switching off the Unit ..................................................................................................................24
7.4 Settings .......................................................................................................................................25
7.5 Pressure Setting on the Angle-type Safety Valve.......................................................................25
7.6 Setting the Thermostat................................................................................................................26
8. Disruptions .................................................................................................................................. 27
8.1 Disruption in Operation ...............................................................................................................27
8.2 Trouble Shooting.........................................................................................................................27
9. Maintenance and Cleaning............................................................................................................. 28
9.1 Maintenance Schedule................................................................................................................28
9.2 Cleaning of Heat Exchanger .......................................................................................................28
9.3 Refilling of Coolant ......................................................................................................................28
9.4 Cleaning of Unit Casing ..............................................................................................................28
10. Repair ....................................................................................................................................... 29
11. Dismounting, Disposal, Storage............................................................................................ 30
11.1 Temporary Placing out of Operation .........................................................................................30
11.2 Re-packaging of the unit ...........................................................................................................30
11.3 Storing the Unit .........................................................................................................................30
11.4 Disposal ....................................................................................................................................30
11.5 Disposal of Operating Materials................................................................................................31
11.6 Return of the unit to Laird Thermal Systems ............................................................................31
1. Wear Parts and Spare Parts....................................................................................................... 32
Addendum............................................................................................................................................ 34
Performance Chart............................................................................................................................34
Flow Scheme ....................................................................................................................................35
Wiring Diagram .................................................................................................................................36

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Revision History
REV
DATE
DESCRIPTION
NAME
PAGE
1.0
29-Nov-13
First version
Edom/Pfeiffer
2.0
06-Jul-15
Spare part numbers changed
Dany/Bitenaite
p. 33
3.0
29-jun-17
Updated format
H. Sharef
All
3.1
24-apr-18
Updated safety valve
A. Wolf
p. 25, 34
3.2
07-Jun-19
Pump capacity changed
O.Lundqvist
p.16
3.3
04-Sep-20
Specs. for Shell Diala updated to S4 from S3
A.Olsson
p.16
3.4
25-Feb-2021
Replaced 95205237.00 with 2066.00
A.Kim
p. 34
3.5
7-Jul-2021
Reformated manual to Laird Thermal
Systems Template
M. Maria

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1. About this Manual
This document is the English translation of the original Operation Manual in German language for the
Oil-Air Cooling Unit OL 4503 (called unit in the following). It is based on German safety regulations. In
your country other regulations may apply.
This Operational Manual addresses the needs of the user of the unit. Its intention is to allow the safe
operation of the unit. Thus, it should be read carefully and be kept in a space accessible for the users
of the unit at any time.
All chapters of this Operation Manual can be read independently and thus can be used for look-up
purposes.
1.1 Terms of Guarantee
General sale and delivery terms of LAIRD apply. The buyer accepts these terms, at the latest when
signing the contract of purchase.
The particular terms of guarantee and duration of guarantee of the unit in question can be taken from
the contract documents as well as from the order confirmation.
Warranty claims and liability are excluded in case of one of the following situations:
Use of the unit in an unintended way
Inaccurate installation, putting into service, operation, repair or maintenance of the product by
people that are not fully authorized
Use of the product despite of defect, wrongly implemented or non-functional safety devices or
protective gear
Unauthorized or forbidden modifications by the user concerning the electrical equipment of the
unit
Unauthorized or forbidden modifications by the user concerning the mechanical structure of the
unit
Unauthorized or forbidden modifications by the user concerning the operating parameters
Use of unauthorized tools
Use of unauthorized operating supplies
Exceedance of mandatory maintenance intervals
Cases of disaster caused by foreign matter influence or act of nature beyond control
NOTE
Any form of unintended use of the unit and any structural change caused by the user without
prior authorization in written form by L
aird Thermal Systems will lead to the termination of
warranty as well the termination of the declaration of conformation and will free
Laird Thermal
Systems from product liability. This concern includes safety devices as well.
In case of authorized changes or when adding optional equipment, it is the sole responsibility of the
customer to assure the accurate implementation of the safety devices required.

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1.2 Contact Information
If you have questions with respect to this unit please use the contact information given below. Always
communicate the following:
Your name and address
Name of contact at your address
Product data as on identification plate: Type of unit, serial number and year of manufacture
Company contact:
Laird Thermal Systems
Prumyslová 497
462 11 Liberec
Czech Republic
Post: Laird Thermal Systems GmbH

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2. Product Identification
2.1 Unit Specifications
Manufacturer
Laird Thermal Systems GmbH
Type of product
Oil-air cooler
Type of unit
OL 4503
Article number
1264.00
Table 1: Unit specifications
2.2 Identification Plate
The identification plate is attached to the front side of the unit (see Fig. 1).
Fig. 1: Position of identification plate
1 Identification plate
Fig. 2: Unit specific identification plate
1
Unit type
2
Article number
3 Serial number 4 Electrical specifications
5 Date of manufacture
1
5
2
3
4
1

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3. Safety Regulations
3.1 Hazard classes
In this document safety instructions are using standardized representation and symbols. Depending
on the probability of their incidence and the severances of consequences three hazard classes are
used.
CAUTION
Reference to noticeable danger for humans or possible damage to property.
Inobservance may lead to reversible injuries or to damage to property.
3.2 Safety Symbols
In this Operation Manual concrete safety instructions are given in order to point out unpreventable
residual risks when operating the unit. These risks include danger for
Human beings
The unit and other equipment
The environment
The safety symbols used in this manual are indicated below. The main reason for their use is to point
the reader to the safety instruction given in the text field beside.
Symbol
Meaning
Warning with respect to general danger or damage to property
Warning with respect to electrical hazard
Table 2: Warning Signs
Symbol
Meaning
This symbol indicates the requirement of wearing safety gloves
This symbol indicates that disconnecting from mains is required.
Table 3: Table 3: Signs giving orders
DANGER
Reference to direct danger for humans.
Inobservance will lead to irreversible injuries or exitus.

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3.3 Hints for Safe Operation
NOTE
Conduct inspections on a regular time base!
This will ensure that the appropriate measures will be carried out indeed.
The unit is operational save. It was built according to the existing state of technology.
Despite this the unit could cause hazards if it
is used in a way it was not intended for
is used improperly
is operated under unsuitable conditions
3.4 Prevent Hazards
Hazards can be prevented by safety-conscious and anticipatory behavior of staff.
Everybody working with the unit should keep the following in mind:
Make this Operation Manual available for everybody at the operational location of the unit in a
complete and perfectly readable form!
Use the unit exclusively for what it was intended!
The unit must be operational and error free. Check the condition of the unit before working with it
and within a regular time frame!
Make sure that nobody can injure himself by any part of the unit!
Any disruption or recognizable change concerning the unit should be reported to the responsible
person!
Stick to the accident prevention regulations as well as any regional regulations!
3.5 Hints Regarding the Electrical Equipment
When working on electrical installations the following principles should be observed:
Works on the electrical installations may only be accomplished by qualified electrical staff!
When connecting electrical equipment to mains regional regulations must be observed. Be aware
of the information in the wiring diagram!
The unit is powered by electricity. Electrical shock hazard exists, if the electrical installations are
defective or the insulation fails during operation.
When switched off the unit is not disconnected from mains. This is only the case when the mains
plug is pulled.
Any changes regarding the control elements of the unit can have an influence on the safe
operation. All intended changes must be authorized by the manufacturer.
After the implementation of a change the safeguard operations must be verified.
No unauthorized changes on the unit are allowed. All intended changes must be authorized by
the manufacturer.
DANGER
Danger to life through electrical shock when working on the electrical equipment of the unit!
Switch off the unit before starting your work!
Disconnect the unit from mains by pulling the mains plug!
Verify that the installation is dead (volt-free)!
Carry out earthing or short circuiting!