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Summary of Contents for Alfa Laval Heatpac EHS-71
- Page 1 ® Heatpac EHS-71 System System Instructions Product No. 9016616-01 to -07 Printed Jun 2015 Book No. 9020063-02 V1 Marine & Diesel Equipment...
- Page 2 Alfa Laval reserve the right to make changes at any time without prior notice. Any comments regarding possible errors and omissions or suggestions for improvement of this publication would be gratefully appreciated. Copies of this publication can be ordered from your local Alfa Laval company.
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Page 3: Table Of Contents
Contents Warning signs in text Warning signs Scope System Description Basic Concept 3.1.1 Principle Diagram Heatpac Working Principle Operating instructions Before Start Start-up Operation Stop Alarms and Fault Finding Alarm Indication Diagrams Electrical System Layout Cable List Interconnection Diagram Installation Diagram Installation General Installation Electrical Installation... - Page 5 Study instruction manuals and observe the warnings before installation, operation, service and maintenance. Not following the instructions can result in serious accidents. In order to make the information clear only foreseeable conditions have been considered. No warnings are given, therefore, for situations arising from the unintended usage of the machine and its tools.
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Page 7: Warning Signs In Text
1 Warning signs in text Warning signs Pay attention to the safety instructions in this manual. Below are definitions of the three grades of warning signs used in the text where there is a risk for injury to personnel. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. - Page 8 1 Warning signs in text...
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Page 9: Scope
2 Scope ® The Heatpac EHS-71 system is designed for the heating of mineral oils in a centrifugal separator cleaning system and/or in a fuel conditioning system (FCM). ® This system description is valid for the Heatpac EHS-71 Heating System. - Page 10 2 Scope...
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Page 11: System Description
3 System Description Basic Concept ® The Heatpac EHS-71 basic concept comprises an electric heater of EHM type combined with an electronic control unit, power unit, and a number of ancillary components. 3.1.1 Principle Diagram G1120811... - Page 12 3 System Description 3.1.1.1 Basic Equipment G1119711 5. Pressure gauge 9. Washer 1. Oil heater 2. Temperature sensor 6. Needle valve 10. Self-sealing nipple 3. Safety valve 7. Copper washer 11. Power unit 4. Temperature sensor 8. Nipple 12. Control cabinet...
- Page 13 3 System Description Basic Equipment EHS-71, 7/8 kW Part No. Name Remark 580974 80 Oil heater, 7 kW, 230 V 230 V Oil heater, 7 kW, 400 V 580974 81 400 V 580974 82 Oil heater, 8 kW, 440 V 440 V Oil heater, 8 kW, 480 V 580974 83...
- Page 14 3 System Description Basic Equipment EHS-71, 22/24 kW Part No. Name Remark 580976 80 Oil heater, 7 kW, 230 V 230 V 580976 81 Oil heater, 7 kW, 400 V 400 V 580976 82 Oil heater, 8 kW, 440 V 440 V Oil heater, 8 kW, 480 V 580976 83...
- Page 15 3 System Description Basic Equipment EHS-71, 50/56 kW Part No. Name Remark 580978 81 Oil heater, 7 kW, 400 V 400 V Oil heater, 8 kW, 440 V 580978 82 440 V 580978 83 Oil heater, 8 kW, 480 V 480 V Oil heater, 7 kW, 690 V 580978 84...
- Page 16 3 System Description Basic Equipment EHS-71, 100/130 kW Part No. Name Remark 580979 91 Oil heater, 130 kW, 400 V 400 V Oil heater, 130 kW, 440 V 580979 92 440 V 580979 93 Oil heater, 130 kW, 480 V 480 V Oil heater, 130 kW, 690 V 580979 94...
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Page 17: Heatpac Working Principle
4 Heatpac Working Principle Oil to be heated is fed continuously to the EHM heater. A temperature sensor in the outlet senses the oil temperture and signals the control unit. The control unit compares the values received with the set parameter values. The control unit then signals the power unit to increase or decrease the electrical supply to the heater as required. - Page 18 4 Heatpac Working Principle...
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Page 19: Operating Instructions
5 Operating instructions Before Start Check the external condition of the heating system for leaks or damage. Make sure that the necessary valves are open. Set the main switch to position 1 and the function switch to position OFF. Check that the High Temperature Switch, Pump Interlock, and Safety Valve are functioning properly. -
Page 20: Operation
5 Operating instructions To avoid risk for overheating and fire, make sure that there is full oil flow at all times during operation. If the safety valve opens, or the high temperature switch trips repeatedly, the heater should be opened up for inspection and cleaning. -
Page 21: Alarms And Fault Finding
6 Alarms and Fault Finding Alarm Indication ® A fault in the Heatpac EHS-71 heating system is normally indicated by an activated alarm in the control unit. Below is a list of possible alarm causes and remedies. Causes Corrective action High temperature Alarm limit for high temp. - Page 22 6 Alarms and Fault Finding...
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Page 23: Diagrams
7 Diagrams Electrical System Layout G1119311 Alfa Laval ref. 9020040 rev. 0... -
Page 24: Cable List
7 Diagrams Cable List G1119411 Alfa Laval ref. 9020041 rev. 0... -
Page 25: Interconnection Diagram
7 Diagrams Interconnection Diagram G1119511 Alfa Laval ref. 1766846 rev. 0... -
Page 26: Installation Diagram
7 Diagrams Installation Diagram G1119611 Alfa Laval ref. 9016653 rev. 0... -
Page 27: Installation
For non-specified materials, qualities common for this type of installation should be used. If the specifications are not followed, Alfa Laval cannot be held responsible for any malfunction of the installation. Specifications •... -
Page 28: Electrical Installation
8 Installation Electrical Installation The following must be considered when installing the electrical system: • Cables must be marked at both ends according to the illustration. • Screened cables must be used for input signals from the temperature sensor, flow switch, and high temperature switch.
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