RCT Muirhead 9200 User manual

PRODUCT MANUAL
ENGINE PROTECTION SYSTEM PANEL
4-FUNCTION WATER COOLED
VERSION 2
Part No. 9200

2| 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
LEGAL NOTICE
1. You acknowledge that this document is protected under copyright law and Remote Control Technologies Pty Ltd or its related bodies
corporate (“RCT”) owns the copyright in this document or otherwise have permissionor licencefrom the relevant owner to use certain
specific works.
2. You must not make any changes, amendments, variations, alterations or modifications to the document.
3. You must not reproduce this document in any form or by any means, or to make copies of this document without RCT’s prior written
consent.
4. The contents in this document constitute confidential information of RCT. You must not circulate, distribute or otherwise allow the
document to be available in the public domain, or to disclose or share the document with any third party, without RCT’s prior written
consent.
5. RCT provides the document to you on an “as is” basis. RCT is not required to provide any updates to this version of the document.
RCT may make any change, amendment or modification to the contents in this document without notice to you.
6. RCT takes a best endeavour basis to ensure that the contents in this document are accurate, complete and reliable. RCT does not
warrant that the document will continue to be reliable, relevant, accurate or complete due to RCT’s continuous efforts in product
development, innovation and technology.
7. Any trademarks used in this document belongs to RCT or is used under a licence. The trademarks are not to be used for any
purposes, without RCT’s prior written consent.
8. Any illustrations used in this document are for illustration purposes only. Illustrations are intended as aids to facilitate your
understanding of the subject matter or issue.
9. RCT disclaims all liability, loss or damage that you suffer as a result of your reliance on this document.
10. By your conduct of using or reading this document, you agree to and accept the terms in this notice.

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
3| 26
Contents
⚠Caution
Consult the specifications data sheet on page 21 prior to installing the product. Incorrect fitment will void the
manufacturer’s warranty.
General Safety Warnings 6
Personal Safety 6
Machine 6
Product 6
Product Overview 7
Features and Functions 7
Operation and Use 8
Control Unit 8
Wiring Connections 8
Inputs 8
Function 1 8
Function 2 9
Function 3 9
Function 4 9
Outputs 9
Alarm Control Output 9
Idle Control 9
Engine Control (ETR) 9
Installation Guide 10
Control Unit 10
Options 10
Audible Alarm 10
Coolant Level Sensor –Function 1 11
Engine Oil Pressure Switch –Function 2 11
Engine Temperature Switch –Function 3 12
Oil/Fuel Level Switch –Function 4 12
Engine Protection System Labelling (Water Cooled) 13
Alert Function Identification Labels 14
Typical Engine Protection System Schematic to suit 4-Function Water Cooled Engines (390x) 15
Calibration 16
Service Information 16
Service Schedule 16
Service Procedure 16
Coolant Level Sensor 16
Engine Oil Pressure Switch 16
Engine Temperature Switch 16
Oil/Fuel Level Switch 17
Test Procedure 17
Control Unit 17
Coolant Level Sensor 18
Engine Oil Pressure Switch 18
Engine Temperature Switch 18
Oil/Fuel Level Switch 18

4| 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Parts List 19
Decals Supplied with the Product 19
Wiring Looms to suit 9200 Control Unit 19
Coolant Level Sensors 19
Pressure Switches to suit Engine Oil Pressure Applications 19
Temperature Switches to suit Temperature Monitoring Applications 19
Oil/Fuel Level Switches to suit Oil Level Monitoring Applications 20
Alarms to suit the Warning Alert Function of the Control Unit 20
Technical Specifications 21
Additional Specifications 21
Power Supply 21
Inputs 21
Outputs 21
Compliance and Standards 22
Troubleshooting 22
Digital Multimeter 22
Appendix 23
ETR Idle Timer / EPS / Fire Control Unit Diagram (478i) 23
Glossary 24
Warranty 24
Revision History 25

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
5| 26
Table of Figures
Figure 1 MuirHead®Engine Protection System................................................................................................ 7
Figure 2 Features of the EPS........................................................................................................................... 8
Figure 3 Coolant level sensor installation example........................................................................................ 11
Figure 4 Drawing 390x –Typical engine protection system schematic ......................................................... 15
Figure 5 Drawing 478i –ETR Idle Timer / EPS / Fire Control Unit Diagram.................................................. 23

6| 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
General Safety Warnings
Personal Safety
■Everyone is responsible for safety.
■The installer/service personnel should be trained and authorized to complete the required work.
■Ensure that the machine is safely isolated during installation and testing to protect all personnel.
■Complete all required risk assessments and job safety analysis (JSA) before commencing work.
■Observe all site-specific and machine OEM procedures regarding the following:
–working at heights
–working in heat
–working in confined spaces
–all other site-specific occupational health and safety (OH&S) procedures
Machine
■Carry out all pre-start operations as per site and machine OEM procedures.
■Ensure the machine is safely isolated during installation and testing to protect the machine and other
equipment in the area.
■Do not operate any machine with a known fault and report all findings to the supervisor in writing.
■Test and operate machine as per machine OEM and site procedures.
■Read and understand machine and site-specific operational and testing instructions.
Product
Before applying power to the equipment, the user/repairer/installer must read all product instructions. If in
doubt, seek assistance.
■Ensure electrical connections are made as per RCT’s recommendations. Test circuits prior to connecting
power to any component.
■The equipment contains no user-serviceable parts inside. Return the unit to RCT for repairs.
■Retain product and installation instructions for future use.
■Ensure that RCT’s recommended service procedures are included in the machine’s service routine.
■Observe all machine, site and RCT product warnings.
■Follow all machine, site and RCT product operating procedures at all time.
The application of safety should not be limited to the above recommendations.

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
7| 26
Product Overview
Figure 1 MuirHead®Engine Protection System
The Muirhead®Engine Protection system (EPS), part number 9200, is designed to monitor almost any alarm
condition on virtually any machine.
This system has been designed to monitor four inputs including an alternating current (ac) input for detecting
coolant loss and three digital outputs. The system continuously monitors four areas of protection and alerts
the operator of abnormal engine conditions.
With no mechanical parts, the EPS control unit is extremely reliable, easy to install and simple to use. Every
EPS control unit can be customised to monitor known problems and functions commonly associated with
equipment failure.
Note
Additional looms, fittings, switches, lights and audible alarm may be required to perform a complete installation.
Features and Functions
Multi-voltage (8 to 32 volts)
Alarm only, return to idle/shutdown modes
System test function
Custom fault indicator labelling
Configurable inputs
Reduces downtime
Substantially reduces the risk of engine failure
Simple installation
Audio/visual indicators
Individual fault indicators
Compact and robust control panel design
Extends machine life
Multiple applications
IP65 enclosure

8| 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Operation and Use
Control Unit
Electronic circuitry within the EPS control unit monitors the state of the switches and sensors, and then
activates the corresponding alert indicator and control outputs when an alarm condition is sensed.
The EPS label displays the alert indicator or function that has faulted. A test switch located on the front of the
EPS control unit allows the operator to simulate a fault and test the complete system.
A connector with 12 contacts located on the rear of the EPS control unit facilitates the necessary wiring for the
inputs and outputs.
Figure 2 Features of the EPS
Wiring Connections
No.
Function
Type
1
+8 Vdc to +30 Vdc
Ignition supply
2
−0 Vdc ground
Ground
3
Output
Alarm control
4
Output
Idle control
5
Output
Energised to run control (ETR)
6
Input
Start input
7
Function 1
Ac circuit/switch input
8
Function 2
Switch input
9
Function 3
Switch input
10
Function 4
Switch input
11
Not used
Not used
12
Not used
Not used
Inputs
The following input functions indicate the factory defaults with all inputs and outputs being configurable. Refer
to document number P0021 for advanced programming information. Contact your local RCT branch or
distributor for a copy of the document or for more information.
Function 1
This input is configured to have a five-second delay prior to pulsing the alert indicator and activating the alarm.
After a further 10 seconds, the alert indicator will come on solid, the alarm will remain on and activate the idle
and ETR control circuits. This circuit activates when the circuit changes state and becomes open. This input
is specifically designed for coolant level detection. If this function is not required, pin 7 must be connected to
ground.
Alert Indicator
Test Switch
12-pin Connector

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
9| 26
Note
This function uses an ac circuit. This reduces electrolysis and corrosion of the coolant level sensor. This will
assist to keep the probe in good working order.
Function 2
This input is configured to have a one-second delay prior to activating the corresponding alert indicator,
external audible alarm, idle and ETR control circuits. This circuit activates when the circuit changes state and
becomes open. If this function is not required, pin 8 must be connected to ground.
Typical use: Low engine oil pressure
Function 3
This input is configured to have a one-second delay prior to activating the corresponding alert indicator,
external audible alarm, idle and ETR control circuits. This circuit activates when the circuit changes state and
becomes open. If this function is not required, pin 9 must be connected to ground.
Typical use: High engine temperature
Function 4
This input is configured to have a one-second delay prior to activating the corresponding alert indicator,
external audible alarm, idle and ETR control circuits. This circuit activates when the circuit changes state and
becomes open. If this function is not required, pin 10 must be connected to ground.
Typical use: Low engine oil level or transmission temperature
Outputs
Alarm Control Output
This circuit is activated as soon as an alert indicator is active. This output remains active until the EPS control
unit has no alert indicator active or the key is switched off. This output is disabled until a start signal is sensed.
This allows servicing to be carried out with the key ON without the alarm sounding.
Idle Control
This circuit operates as a direct opposite to the alarm control output. It switches off when the alarm control
output is active. This output is used in conjunction with additional control systems that return the engine to
idle when an alert indicator is activated. If return to idle is not required, this circuit should not be connected.
Engine Control (ETR)
This circuit operates in a similar way to the idle control output; however, it has a 0 to 40-second adjustable
time delay. This time delay is factory set to 10 seconds, allowing the machine to run for 10 seconds after an
alert indicator has been activated. This circuit is an energised to run output. This output also incorporates an
automatic system override circuit which allows the EPS control unit to override the engine oil pressure switch
allowing the engine to be started. If shutdown is not required, this circuit should not be connected.
⚠Warning
When an alert indicator is active, special care should be taken to assess safety considerations which may arise
from shutting the machine down.
1. Will the machine be left uncontrollable, as shutdown affects the braking and steering of most machines?
2. Can the machine be parked in a safe environment?

10 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Installation Guide
Note
If the EPS system is installed in conjunction with an idle timer and/or a fire status control unit, it is imperative
that the units are installed in the correct order. Failure to do so may result in the machine not shutting down
correctly.
Refer to the appendix at the end of this manual for the correct sequence.
Control Unit
1. The recommended location for the control unit is in the operator’s cabin in clear view and within easy reach
of the operator. Proximity to the operator is important as the control unit incorporates a system test
switch/circuitry that allows service personnel and/or operators to test the system.
2. Drill two 8 mm diameter holes with the hole centres being 100 mm apart to suit the M8*30 hex screw that
bolts to the control unit mounting bracket. Careful consideration should be given to the location of these
holes before drilling to ensure adequate accessibility to the electrical connection located on the rear of the
control unit.
3. Refer to the wiring table below and the wiring diagram in this manual to wire up the control unit. It is
recommended that the wiring loom be installed alongside the OEM engine wiring ensuring that it is secured
at regular intervals; this will provide protection from heat and abrasion, and any other excess damage that
may occur with extended machine operation. When securing the loom to the OEM engine wiring, ensure
that the loom is away from moving machine parts which could lead to loom damage.
4. Install the sensors/ switches (see below for more detail). All sensors/ switches should be installed using a
suitable thread sealant.
Note
RCT recommends that all electrical connections be treated with Electroguard grease (part number 2800).
Options
■If a Muirhead®Idle Timer is fitted, the machine will return to idle immediately.
■If a Muirhead®Shutdown Control unit is fitted, the machine will return to idle for the specified time and then
shut down.
Notes
■Perform a system test using the test procedure in the Calibration section in this manual.
■For information on testing individual functions and/or parts of the EPS system, refer to the additional testing
information in this manual.
Audible Alarm
There are three ways of mounting the audible warning alarm;
1. Through instrument panel (via a 29 mm hole)
2. Via an optional mounting bracket (part number 9655)
3. Under the instrument panel (cable tied to loom)

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
11 | 26
Coolant Level Sensor –Function 1
It is recommended that the coolant level sensor be installed in the radiator tank (refer to the details below).
Ensure there is sufficient clearance within the radiator to accommodate the length of the coolant. Drill the
required hole size in the tank and tap to the required thread size as specified below. Always clean debris away
and remove any foreign objects before installing the probe. Fit the coolant level sensor and pressure test, this
can be achieved by running the engine until normal operating temperature has been reached.
Figure 3 Coolant level sensor installation example
Engine Oil Pressure Switch –Function 2
The engine oil pressure switch should be located in a suitable oil gallery access port. Use the original
equipment manufacturer (OEM) oil pressure switch as a guide for location. Fit the oil pressure switch using
thread sealant, being careful not to over tighten.
Note
T-pieces are available in most thread types to enable both the OEM and Muirhead®Oil Pressure Switches to
be installed into the original port.
Part No. 0018
12 PSI
Normally Open
Thread: 1/8 NPT
Part No. 3074
8 PSI
Normally Open
Thread: 1/8 NPT
Part No. 8725
9 PSI
Normally Open
Thread: 1/8 NPT
Part No. 3755
12 PSI
Normally Open
Thread: 9/16 UNO
Part No. 3429
16 PSI
Normally Open
Thread: 1/8 NPT
Part No. 3430
9 PSI / 62 kPa
Normally Open
Thread: 1/8 NPT
Part No. 2006
Thread: 1/8 NPT Nylon
Tapping drill: 21/64”
Probe length: 30 mm
Part No. 2887
Thread: 1/4 NPT Nylon
Tapping drill: 7/16”
Probe length: 72 mm
Note: Brass weld
collar included
Part No. 2205
Thread: 1/4 NPT Brass
Probe length: 60 mm
Tapping drill: 7/16”
Radiator
Probe position
Optimum probe level is ⅓ up
from the bottom of the top
hose hole

12 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Engine Temperature Switch –Function 3
The coolant temperature switch should be installed on the engine side of the thermostat control. It is imperative
that the switch sensing area (bulb) be immersed in coolant. Install the switch using thread sealant.
Note
Care should be taken when selecting a mounting port to allow sufficient depth for the bulb.
Part No. 1764
212°F / 100°C
Normally Closed
Thread: 3/8 NPT
Part No. 1765
220 °F / 104 °C
Normally Closed
Thread: 3/8 NPT
Part No. 1766
230 °F / 110 °C
Normally Closed
Thread: 3/8 NPT
Part No. 8491
Heavy Duty Temp Switch
225 F / 107 C
Normally Closed
Thread: 3/4 UNO
Oil/Fuel Level Switch –Function 4
The oil/fuel level switch is a capacitive type switch with a ¼ NPT mounting thread and used to monitor levels
in tanks and reservoirs. The switch should be installed at the low level mark which is specified by the OEM.
Ensure there is sufficient clearance within the tank so as not to interfere with the switch installation. Install
switch using thread sealant.
Note
Be careful when selecting a mounting position as the maximum allowable ambient temperature for the switch
is 100 C. Also note that the oil/fuel level switch incorporates a three-second alarm delay.
Part No. 3072
Normally Open
Thread: 1/4 NPT brass
Tapping drill: 7/16”

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
13 | 26
Engine Protection System Labelling (Water Cooled)
There are a wide range of decals available and also blank decals which can be used when not all four functions
are required.
The engine protection system incorporates a simple but effective labelling system that can be customised to
suit individual needs.
The construction of the label is a simple process;
1. Select the correct decal that is required for the application.
2. Remove the adhesive backing from the decal and place in the correct clear insert on the main label. Make
sure the decal is aligned correctly (as shown in the above diagram).
3. Use a plastic card or similar tool to carefully push any air bubbles that form out to the edges of the label.
4. Once all the decals that are required have been placed in their correct clear inserts on the main label,
remove the adhesive backing from the main label and fit it onto the engine protection control enclosure.
5. Remove all air bubbles and clean the label.
The labelling process is now complete.

14 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Alert Function Identification Labels
Part No.
Label
Part No.
Label
5636
6143
0427
1526
1372
5630
5629
5635
0426
5634
0437
5637
0428
1413
0442
4352
0453
5638
0486
5633
3465
4350
3144
5631
5785
5632
5780
4348
5782
1411
5784
4349
5779
5628
5781
1417
5783
8424
5778
1368

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
15 | 26
Typical Engine Protection System Schematic to suit 4-Function Water Cooled
Engines (390x)
Figure 4 Drawing 390x –Typical engine protection system schematic
9
8
7
3
4
5
6
11
12
1
2
ENGINE TEMP
OIL PRESSURE
COOLANT LEVEL
ALARM
IDLE CONTROL
ETR CONTROL
START INPUT
NOT USED
NOT USED
8 - 30V SUPPLY
GROUND
YL-4
PK-4
WH-4
GN-4
BN-4
YL/BU-4
PU-4
OR-4
BK-4
ENGINE PROTECTION
SYSTEM CONTROL
T°
BK-4
YL-4
N/C ENGINE
TEMPERATURE
SWITCH
P
OIL
PRESSURE
SWITCH
N/O
BK-4
PK-4
WH-4
L
COOLANT
LEVEL
PROBE
GROUND VIA
COOLANT
TO TANK
BK-4
GN-4 +
-FAULT
ALARM
CAUTION
OUTPUT CURRENT
RATING
12AMP MAX
!
BK-4
BN-4 +
-
NOTE 1
THIS IS A TYPICAL ENGINE
PROTECTION SYSTEM SCHEMATIC
ILLUSTRATING ALL INPUTS AND
OUTPUTS. THIS SHOULD ONLY BE
USED AS A GUIDE AS DIFFERENT
MACHINES REQUIRE DIFFERENT
COMPONENTS.
FOR MORE INFORMATION PLEASE
CONTACT THE MANUFACTURER.
IDLE CONTROL
SOLENOID
CAUTION
OUTPUT CURRENT
RATING
12AMP MAX
!
BK-4
YL/BU-4 +
-
ETR RUN
SOLENOID
CAUTION
OUTPUT CURRENT
RATING
12AMP MAX
!
8 - 30VDC
PROTECTED
SUPPLY
(RECOMMENDED
10AMP
PROTECTION)
TO START
TERMINAL AT
KEY SWITCH
MACHINE
(FRAME)
GROUND
NOTE 2
IF NOT ALL FUNCTIONS ARE
REQUIRED, A BLANK LABEL IS PLACED
ON THE UNUSED FUNCTION AND THE
CORRESPONDING INPUT WIRE MUST
BE CONNECTED TO GROUND.
RD-4
GY-4
BK-4
C
A
B
OIL
LEVEL
SWITCH
+
S
-
10OIL LEVEL GY-4
8
7
654
3
21
A
B
C
D
E
F
G
H
I
J
K
L
A
B
C
D
E
F
G
H
I
J
K
L
8
7
65
4321
A4
COPYRIGHT - ALL RIGHTS RESERVED
This drawing is the property of REMOTE
CONTROL TECHNOLOGIES PTY LTD (RCT),
and is not to be copied or used in whole or in
part for any purpose without the express
authority of RCT. The drawing is to be returned
to RCT, on demand.
PANEL EPS 4
FUNCTION WATER
COOLED VER 2
EXTERNAL WIRING
www.rct.net.au
UNCONTROLLED DOCUMENT
REV
1
DWG No 390x
STATUS
NTS
SCALE
Released
SHEET 1 of 1
BY SD
DRN GT DATE 08/03/10
APPD SD DATE ----
STOCK
CODE MH-EPS-4-01
PART
NO 9200
3rd ANGLE
PROJECTION
ALL DIMENSIONS IN MILLIMETERS
WIRE LEGEND
BK - BLACK PK - PINK
BU - BLUE PU - PURPLE
BN - BROWN RD - RED
GN - GREEN WH - WHITE
GY - GREY YL - YELLOW
OR - ORANGE TQ - TURQUOISE
REV ZONE DESCRIPTION BY DATE
1C2 Pins re-ordered MT 23/09/15

16 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Calibration
Not applicable
Service Information
Service Schedule
The manufacturer recommends that the following service procedure should be performed at each machine’s
scheduled service interval.
Service Procedure
1. Perform a visual inspection and include the following:
a) Control unit
b) Wiring connections and looms
c) All switches and sensors as below
d) Engine fluids
2. Perform a system test as per the following:
a) Refer to the Operation and Use section of this manual for the operation of the control unit and each
function.
b) Test each circuit individually as per the Test Procedure.
Note
All monitoring switches should be changed when fitting a new or repaired engine to a machine.
Coolant Level Sensor
Every 2000 hours or six months
1. Remove the sensor from the radiator.
2. Plug the hole to minimise coolant loss.
3. Inspect the condition of the sensor ensuring the centre of the sensor is insulated from outer mounting.
Ensure the sensor is free from grease, oil and dirt.
4. Inspect electrical connection point for thread damage, burrs, corrosion and ensure the nut tightens on the
thread (if applicable).
5. Refit the sensor ensuring the thread is free from coolant leaks.
Engine Oil Pressure Switch
Every 2000 hours or six months
1. If engine oil faults are present and tests performed on the electrical circuit prove inconclusive, it is
recommended that the engine oil pressure switch be replaced.
2. Due to the critical function of this switch, it is recommended that the engine oil pressure switch be replaced
every 2000 hours or every six months.
Engine Temperature Switch
Every 2000 hours or six months
1. If temperature faults are present and tests performed on the electrical circuit prove inconclusive, it is
recommended that the coolant temperature switch be replaced.
2. Due to the critical function of this switch, it is recommended that the coolant temperature switch be replaced
every 2000 hours or every six months.

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
17 | 26
Oil/Fuel Level Switch
Every 2000 hours or six months:
1. It will be necessary to remove the switch for testing.
2. Remove switch and plug hole to prevent fluid loss.
3. Inspect the switch for physical damage.
4. Reconnect the 3-pin Deutsch plug.
5. Turn the ignition switch to the ON position.
6. Verify the oil/fuel level alert indicator is now illuminated.
7. Immerse the threaded end of the switch in oil and verify that the oil/fuel level alert indicator is no longer
illuminated.
8. If the switch tests okay, refit the switch using thread sealant.
Test Procedure
The testing of the EPS control unit should ideally be performed
when the operator first checks the machine at the beginning of
each shift or when the machine is due for its scheduled service.
The testing of the engine protection control unit incorporates a
system test switch, this allows the service person and/or operator
to easily test the EPS control unit.
In order to test the EPS control unit, the following test procedure
should be followed.
Control Unit
1. Start and run the machine as per normal (raise the rpm
above idle if the idle control function is used). All alert
indicators on the control unit should light up and activate the
alarm on initial start-up, and cease immediately once the control unit has detected that the engine oil
pressure has been pressurised.
2. If the control unit has detected a fault upon start-up, for example, if the machine coolant level is low, the
fault will be present on the control unit upon start-up of the machine.
3. Press and hold the control unit test switch, all alert indicators on the control unit should illuminate
immediately and the alarm control circuit will activate, sounding the alarm.
4. Having depressed the system test switch for 10 seconds, the engine ETR output will turn off, shutting down
the engine if the engine shutdown option of the control unit is being utilised. If the shutdown option is not
being used, the machine will return to idle when an alert indicator is activated.
5. Once the system test switch has been released, the EPS system will return the machine to its normal
operation so that the machine can be restarted and returned to normal operation if machine shutdown has
occurred.
Note
The 10-second period is adjustable.
System Fault Procedure
1. If the test procedure has been performed and the system has not functioned as per above, report the
malfunction to the supervisor before operating the machine.
2. Should any fault (visual or audible) be detected while operating the machine or if the engine RPM drops
below its normal operating level, the machine should be parked safely ensuring the park brake is applied.
The engine should then be shut down, and the malfunction reported to the supervisor.
System
Test Switch

18 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Coolant Level Sensor
Every 250 hours or during machine scheduled service
1. Turn the ignition switch to the ON position and verify the coolant level alert indicator is not illuminated.
2. Disconnect the wire from the coolant level sensor.
3. Verify that the coolant level alert indicator is now illuminated.
4. Reconnect the wire to the coolant level sensor.
5. Remove sufficient coolant from the engine to allow the level to fall below the sensor probe.
6. Verify that the coolant level alert indicator is illuminated.
7. Refill coolant to the manufacturer’s specifications.
8. Check that the coolant level alert indicator is no longer illuminated.
9. Turn the ignition off.
Engine Oil Pressure Switch
Every 250 hours or during machine scheduled service
1. Turn the ignition switch to the ON position.
2. Verify that the fault alarm is sounding and the oil pressure alert indicator is illuminated.
3. Bridge the wires at the oil pressure switch.
4. Verify that alarming has ceased and the oil pressure alert indicator is no longer illuminated.
5. Remove bridging connector.
6. Start and run machine until engine oil pressure reaches normal operating pressure.
7. Verify that alarming has ceased and the oil pressure alert indicator is no longer illuminated.
Engine Temperature Switch
Every 250 hours or six months
1. Turn the ignition switch to the ON position.
2. Check that the engine temperature alert indicator is not illuminated.
3. Disconnect one wire at the engine temperature switch.
4. Verify that the engine temperature alert indicator is now illuminated.
5. Turn the ignition off and reconnect electrical wiring.
Oil/Fuel Level Switch
Every 250 hours or during machine scheduled service
1. Turn the ignition switch to the ON position.
2. Check that the oil level alert indicator is not illuminated.
3. Disconnect the 3-pin Deutsch plug at the level switch.
4. Verify that the oil level alert indicator is now illuminated.
5. Turn the ignition off and reconnect electrical wiring.

M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
19 | 26
Parts List
Part No.
Description
9200
EPS 4-Function Water Cooled Control unit
Decals Supplied with the Product
Part No.
Description
Qty
5635
Coolant Level Label
1
5634
Oil Level Label
1
5637
Oil Pressure Label
1
5638
Engine Temperature Label
1
0427
Blank with Red Dot Label
1
The following sensors and switches are NOT supplied with the control unit as there may be a particular type
of switch and/or sensor required to suit a particular type of machine for the application that it is needed for.
Wiring Looms to suit 9200 Control Unit
Part No.
Description
8797
Loom 5 m To Suit 9301 & 9200 EPS Control unit
8805
Loom 10 m To Suit 9301 & 9200 EPS Control unit
Coolant Level Sensors
Part No.
Description
2006
Coolant level sensor Light Duty 1/8 NPT (Plastic Body)
2887
Coolant level sensor Light Duty 1/4 NPT (Complete with Brass Bush)
2205
Coolant level sensor Heavy Duty 1/4 NPT (Brass Body)
Pressure Switches to suit Engine Oil Pressure Applications
Part No.
Description
0018
Pressure Switch 9 PSI 1/8 NPT, N/O
3074
Pressure Switch 8 PSI, 2 Terminal, N/O, 1/8 NPT (Light Duty)
8725
Pressure Switch 8 PSI, 2 Terminal, N/O, 1/8 NPT (Heavy Duty)
3755
Pressure Switch 12 PSI, Deutch Connection, 9/16 UNO
3429
Pressure Switch 16 PSI Falling, N/O, 1/8 NPT
3430
Pressure Switch 9 PSI Falling, N/O, 1/8 NPT
Temperature Switches to suit Temperature Monitoring Applications
Part No.
Description
1764
Temperature Switch 212°F, N/C, 2 Terminal 3/8 NPT
1765
Temperature Switch 220°F, N/C, 2 Terminal 3/8 NPT
1766
Temperature Switch 230°F, N/C, 2 Terminal 3/8 NPT
1767
Temperature Switch 250°F, N/C, 2 Terminal 3/8 NPT
1768
Temperature Switch 275°F, N/C, 2 Terminal 3/8 NPT
8491
Temperature Switch 225°F, N/C, 2 Terminal, O-ring, 3/4 UNO
3379
Adaptor Bush 3/8 NPT Female to 1/2 NPT Male To Suit 3/8 NPT Temperature Switches

20 | 26
M0488a.docx | Rev 1.7 | Modified on 19/05/2020 | © Remote Control Technologies Pty Ltd
Oil/Fuel Level Switches to suit Oil Level Monitoring Applications
Part No.
Description
3072
Oil Level Switch Capacitive, N/O , 1/4 NPT, Used For Temperatures Below 100 °C
Alarms to suit the Warning Alert Function of the Control Unit
Part No.
Description
1723
Warning Alarm, Constant or Intermittent Siren 12/24 V
6162
Warning Alarm, 102 dB 12/24 V Heavy Duty
Note
The sensors and switches listed in this manual are only a small selection available from RCT. If a sensor is
required for a specific application, please contact your local RCT branch or distributor; alternatively, email
[e-mail].