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PRODUCT MANUAL

ENGINE PROTECTION SYSTEM
6-FUNCTION TO SUIT AIR COOLED ENGINES

Part No. 3747

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Summary of Contents for Muirihead 3747

Page 1: ...PRODUCT MANUAL ENGINE PROTECTION SYSTEM 6 FUNCTION TO SUIT AIR COOLED ENGINES Part No 3747 ...

Page 2: ... infringements upon the rights of third parties that may result from its use All examples and diagrams shown in this manual are intended only as an aid to understanding the text not to guarantee operation RCT will accept no responsibility for actual use of the product based on these illustrative examples Please contact your nearest RCT branch for more information concerning applications in life cr...

Page 3: ...N 4 12 HYDRAULIC OIL TEMPERATURE SWITCH FUNCTION 5 13 OIL FUEL LEVEL SWITCH FUNCTION 6 13 LOW ENGINE OIL LEVEL SWITCH LOCATION DIAGRAM 159D 14 ENGINE PROTECTION SYSTEM LABELLING DETAILS 15 ALERT FUNCTION IDENTIFICATION LABELS 16 TYPICAL ENGINE PROTECTION SYSTEM SCHEMATIC TO SUIT 6 FUNCTION AIR COOLED ENGINES 268v 17 CALIBRATION 18 SERVICE INFORMATION 18 SERVICE SCHEDULE 18 SERVICE PROCEDURE 18 ENG...

Page 4: ...E OIL PRESSURE APPLICATIONS 21 TEMPERATURE SWITCHES TO SUIT TEMPERATURE MONITORING APPLICATIONS 22 BELT BRAKE PROXIMITY SWITCHES 22 OIL FUEL LEVEL SWITCHES TO SUIT THE OIL LEVEL MONITORING APPLICATIONS 22 ALARMS TO SUIT THE WARNING ALERT FUNCTION OF THE CONTROL UNIT 22 TECHNICAL SPECIFICATIONS 23 COMPLIANCE AND STANDARDS 24 TROUBLESHOOTING 24 GLOSSARY 25 WARRANTY 25 APPENDIX 26 ETR IDLE TIMER EPS ...

Page 5: ...rotect 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 instru...

Page 6: ... 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 maybe 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 indicato...

Page 7: ...rol 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 WIRING CONNECTIONS NO FUNCTION TYPE 1 8 V DC to 32 V DC Ignition supply 2 0 V DC ground Ground 3 Output 1 Alarm control 4 Output 2 Idle control 5 Output 3 Energised to run control ETR 6 Inp...

Page 8: ...ngine 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 Transmission oil temperature FUNCTION 4 This input is configu...

Page 9: ...should not be connected This circuit overrides for 10 seconds after start is activated 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...

Page 10: ... 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 en...

Page 11: ...10 mm x 1 5 mm brass WARNING OVER TIGHTENING THE SWITCH WHEN INSTALLING MAY CAUSE DAMAGE TO THE SWITCH RENDERING THE SWITCH UNSERVICEABLE AND MAY ALSO MAKE REMOVAL PROBLEMATIC 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...

Page 12: ... when selecting a mounting port to allow sufficient depth for the bulb Part No 1768 275 F 135 C Normally Closed Thread 3 8 NPT Part No 1767 250 F 121 C Normally Closed Thread 3 8 NPT BELT BREAK PROXIMITY SWITCH FUNCTION 4 It is recommended that the belt break proximity switch be installed with a 15 mm clearance with the switch sense facing the spring loaded idler pulley metal If the engine cooling...

Page 13: ... OIL FUEL LEVEL SWITCH FUNCTION 6 The oil fuel level switch is a capacitive type switch with a 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 Care ...

Page 14: ...DRAIN ENOUGH OIL UNTIL THE DIPSTICK MARK IS ON LOW WITH THE ENGINE RUNNING AT NORMAL SPEED 2 TEMPORARILY INSTALL A LENGTH OF CLEAR PLASTIC TUBING FROM THE LOWER OIL PAN AND RETURN TO THE UPPER PAN 3 OIL LEVEL SIGHTED BY EYE ACROSS PLASTIC TUBE TO SIDE OF OIL PAN THIS LEVEL DETERMINES THE LOCATION OF LOW OIL SWITCH POINT 4 BRAISE 1 4 NPT FITTING IN THE SIDE OF THE PAN INSTALL HOSE FITTING ADAPTOR U...

Page 15: ...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 pla...

Page 16: ...gies P L 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 ...

Page 17: ... BREAK ALARM IDLE CONTROL ETR CONTROL START INPUT HYD OIL TEMP HYD OIL LEVEL 8 30V SUPPLY GROUND YL 4 PK 4 BU WH 4 GY 4 GN 4 BN 4 YL BU 4 PU 4 OR 4 BK 4 WH 4 BU RD 4 BK 4mm GN 4mm IN3 IN2 IN1 IN4 OUT1 OUT2 OUT3 IN5 IN6 T N O BK 4 T BK 4 WH 4 N C HYDRAULIC OIL TEMPERATURE SWITCH RD 4 BU RD 4 BK 4 C A B HYDRAULIC OIL LEVEL SWITCH S 8 7 6 5 4 3 2 1 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 ...

Page 18: ...ant temperature switch be replaced every 2000 hours or every six months 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 r...

Page 19: ...ne 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 engine temperature is high the fault w...

Page 20: ...nsmission oil temperature alert indicator is not illuminated 3 Disconnect one wire at the transmission oil temperature switch 4 Verify that the transmission oil temperature alert indicator is now illuminated 5 Turn the ignition off and reconnect electrical wiring BELT BREAK PROXIMITY SWITCH Every 250 hours or six months 1 Turn the ignition switch to the ON position 2 Check that the belt break aler...

Page 21: ...f machine for the application that it is needed for WIRING LOOM TO SUIT 3747 CONTROL UNIT PART NO DESCRIPTION 5994 Loom 10 m to Suit 3747 3565 EPS Control unit ENGINE TEMPERATURE SWITCHES PART NO DESCRIPTION 1232 365 F 185 C N O M10 Thread Brass 7516 302 F 150 C N O M10 Thread Brass 9779 338 F 170 C N O M10 Thread Brass PRESSURE SWITCHES TO SUIT ENGINE OIL PRESSURE APPLICATIONS PART NO DESCRIPTION...

Page 22: ...witches BELT BRAKE PROXIMITY SWITCHES PART NO DESCRIPTION 1218 Metal Proximity Switch 30 mm Sense 3 Wire N O 4072 Plastic Proximity Switch 30 mm Sense 3 Wire N O OIL FUEL LEVEL SWITCHES TO SUIT THE OIL LEVEL MONITORING APPLICATIONS PART NO DESCRIPTION 3072 Oil Level Switch Capacitive N O 1 4 NPT Used For Temperatures Below 100 C 8690 Oil Level Switch Heavy Duty N O Multilevel Switch is Recommended...

Page 23: ...switches and sensors Min max input voltage 8 to 32 V DC Circuit protection Reverse polarity protected outputs are current overload protected Enclosure type Aluminium powder coated Environmental protection IP rating IP65 Programming adjustment Refer to document number P0021 ADDITIONAL SPECIFICATIONS Power Supply Supply spike withstand Absolute maximum spike 1J 250 A 8 20 µs pulse 1 event 100 A 50 µ...

Page 24: ...an cause or be caused by the failure of one or more other components Always attempt to find and correct the cause of the engine protection system failure before replacing a component Tools needed Part no 2005 Digital Multimeter x 1 Part no 7599 Circuit Tester x 1 Digital Multimeter Use the part number 2005 digital multimeter or equivalent for making continuity checks and voltage measurements It is...

Page 25: ...DC Direct Current PLC Programmable Logic Controller E G For example POT Potentiometer ETR Energised To Run PPM Pulses Per Metre ETS Energised To Stop PWM Pulse Width Modulation ESD Engine Shutdown PWR Power FET Field Effect Transistor Rev Revision GND Ground RF Radio Frequency H Hours RH Relative Humidity HEX Hexidecimal Numbering System RPM Revolutions per minute ID Identity RX Receiver i e That ...

Page 26: ...press authority of RCT The drawing is to be returned to RCT on demand ENERGISED TO RUN ETR IDLE TIMER 11450 EPS FIRE CONTROLLER CIRCUIT TO SUIT CATERPILLAR MACHINES EXTERNAL WIRING www rct net au UNCONTROLLED DOCUMENT REV 1 DWG No 478i STATUS NTS SCALE Released SHEET 1 of 1 BY EY DRN CW DATE 21 05 13 APPD DAS DATE 21 05 13 STOCK CODE PART NO 3rd ANGLE PROJECTION ALL DIMENSIONS IN MILLIMETERS NOTE ...

Page 27: ...M0170 docx Rev 1 2 Modified on 20 04 2016 Remote Control Technologies P L 27 28 NOTES ...

Page 28: ...Discover more www rct global com sales rct global com AUSTRALIA 61 0 8 9353 6577 AFRICA 27 0 83 292 4246 CANADA 1 705 590 4001 RUSSIA CIS 7 910 411 11 74 SOUTH AMERICA 56 9 7387 2385 USA 1 801 938 9214 ...

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