EMP OK1 Manual

Rev
Rev By
Date
Description of Change
Approved By
G
ME
5/19/22
Revisions
ECN7628
H
ME
1/10/23
Revisions
ECN8814
9980029073 Rev. H – 01/10/2023 © 2011 EMP, Inc. 1
Installation and Service Manual
OK1/OK2 Oil Cooler Assembly
This manual is effective for the installation and service of OK1 and OK2 systems
with 11” fans. See System Part Numbers for a complete list of systems.

Product Overview
© 2011 EMP, Inc. 2
Engineered Machined Products Inc.
2701 North 30th Street
Escanaba, MI, USA 49829
Phone: [phone]
www.emp-corp.com
[e-mail]
Product Overview
The EMP OK1/OK2 oil cooling systems are advanced thermal management products designed for applications
requiring cooling of hydraulic oil, system oil, transmission oil, fluid or any other general cooling application using
oil or a similar fluid. Benefits include lower energy consumption, reduced noise, individual fan diagnostics and
improved temperature control. This document defines the installation requirements and service parts
replacement requirements for the OK1 and OK2 system part numbers listed in System Part Numbers.
The installation requirements defined in this document must be followed in order to ensure the proper operation
and service life of OK1 and OK2 thermal systems.

Table of Contents
© 2011 EMP, Inc. 3
Table of Contents
Product Overview ..............................................................................................................................................2
Introduction........................................................................................................................................................4
Purpose .........................................................................................................................................................4
Service Technician Responsibilities ...............................................................................................................4
Liability Disclaimer .........................................................................................................................................4
More Information............................................................................................................................................4
Routine Maintenance .....................................................................................................................................4
Technical Help ...............................................................................................................................................4
Warranty ........................................................................................................................................................4
About This Document ........................................................................................................................................5
Warnings, Cautions and Notes.......................................................................................................................5
Definition of Terms.........................................................................................................................................5
Product Safety Warnings ...................................................................................................................................6
System Configurations.......................................................................................................................................7
Product Identification......................................................................................................................................7
Model Codes..................................................................................................................................................7
Airflow Direction .............................................................................................................................................7
System Part Numbers ....................................................................................................................................8
System Information............................................................................................................................................9
Operation .......................................................................................................................................................9
OK1 ...............................................................................................................................................................9
OK2 .............................................................................................................................................................10
Common Specifications and Operating Limits .............................................................................................. 11
Wiring and Fusing Requirements .................................................................................................................11
Heat Rejection .............................................................................................................................................12
μTMC Controlled Systems ...........................................................................................................................13
Installation .......................................................................................................................................................17
Orientation ...................................................................................................................................................17
Mounting ......................................................................................................................................................18
Plumbing......................................................................................................................................................20
Wiring and Fusing Recommendations..........................................................................................................21
Software Calibration Options........................................................................................................................22
Troubleshooting...............................................................................................................................................22
Service Parts Replacement .............................................................................................................................23
Connector Greasing .....................................................................................................................................23
Fuse Replacement .......................................................................................................................................23
FIL11 Fan ....................................................................................................................................................24
μTMC System Controller.............................................................................................................................. 25
Power/Ground Stud Replacement Kit (1370090014) – (If Required) ............................................................ 26
Main Wire Harness.......................................................................................................................................27
OK1 Harness Installation..............................................................................................................................28
OK2 Harness Installation..............................................................................................................................29
Heat Exchanger Replacement for OK1/OK2 ................................................................................................ 30
Shroud Replacement for OK1/OK2 ..............................................................................................................31
Fluid Thermistor ...........................................................................................................................................32
Service Tool Interface ..................................................................................................................................32
Appendix A – Wiring Schematics.....................................................................................................................33
3170029067.................................................................................................................................................34
3170029068.................................................................................................................................................35
3170029068, Rev D and Later ..................................................................................................................... 36
Appendix B – Operation Manual μTMC System Controller .............................................................................. 37
Product Warranty Registration Form................................................................................................................ 38

Introduction
© 2011 EMP, Inc. 4
Introduction
Purpose
The purpose of this document is to define the installation and service requirements of the OK1 and OK2 system
part numbers that are listed in System Configurations. The requirements defined in this document must be
followed in order to ensure proper operation and service life of OK1 and OK2 thermal systems.
Service Technician Responsibilities
Ensure that all safety messages and information messages are read and understood before installation,
maintenance, or repairs are performed. It is important to use caution when service work is performed. Knowledge
of impacted systems and their operation are important before the removal or disassembly of any component.
Knowledge of hazards present and risk of injury to the service technician while working on these systems is
critical to personal safety.
Liability Disclaimer
EMP cannot anticipate every possible circumstance that might involve a potential hazard. The safety messages
in this document, in related manuals, and on the product are therefore not all inclusive. If a tool, procedure, work
method, or operating technique that is not specifically recommended by EMP is used, you must satisfy yourself
that it is safe for you and for others. You should ensure that the product will not be damaged or be made unsafe
by the operation, maintenance, or repair procedures that you choose.
More Information
Documents and software referenced in this manual are available for download from the support section of the
EMP website, https://www.emp-corp.com/support/.
Routine Maintenance
Routine maintenance schedule and procedures are outlined in service bulletin 9910039031.
Technical Help
Contact EMP Technical Service for technical help at [phone] or [e-mail].
Warranty
Mail, Fax, or Email the completed warranty registration form at the end of the document to:
EMP Advanced Development, LLC
2701 North 30th Street
Escanaba, MI, USA 49829
Fax: [phone]
[e-mail]

About This Document
© 2011 EMP, Inc. 5
About This Document
Warnings, Cautions and Notes
Two headings are used in this document to stress your safety and safe operation of the system. They are styled
with a graphic bullet and bold, uppercase text: WARNING and CAUTION. Warnings highlight risks to
personnel — hazards, unsafe conditions and practices that can result in personal injury or death. Cautions
indicate conditions or practices that can cause damage to components, systems, or other equipment.
A third heading, styled as NOTE, calls attention to additional information about components and procedures
discussed in the document.
Definition of Terms
CAN .............. Controller area network.
LED ............... Light-emitting diode.
EMP-Link...... EMP proprietary component to component communication network.
µTMC ............ EMP micro thermal management system controller.
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