Nilfisk-Advance SR 1900 Service Manual
Cab addendum, 4 cyl lpg/petrol/diesel
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Also See for SR 1900:
- Troubleshooting manual (82 pages) ,
- Instructions for use manual (56 pages) ,
- Instructions for use manual (8 pages)
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Summary of Contents for Nilfisk-Advance SR 1900
- Page 1 SR 1900 Service Manual Cab Addendum Models: 56508769 (4 cyl LPG), 56508770 (4 cyl Petrol), 56508771 (4 cyl Diesel) 11/08 FORM NO. 56043123 Printed in USA...
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Page 2: Table Of Contents
Cab Electrical Ladder Diagram ............................22 Heating and A/C System Plumbing and Hydraulic Schematic .....................23 FIGURES Figure 1-1 — SR 1900 Cab Height ............................3 Figure 2-1 — Cab Controls ..............................4 Figure 2-2 — Heating System Components ..........................5 Figure 2-3 — Air Conditioning System Components ......................6 Figure 3-1 —... -
Page 3: Section 1 - Introduction
SECTION 1 — INTRODUCTION SR 1900 DELUXE CAB OPTIONS The SR 1900 Deluxe Cab is available with two levels of environmental control that provide additional comfort and convenience for the Operator, and add additional functionality to the machine. An optional cab heater is available which includes a pressurized cab with an external air fi lter. -
Page 4: Cautions And Warnings
Take precautions to prevent hair, jewelry or loose clothing from becoming caught in moving parts. Close and secure all doors, covers and access panels as shown in the SR 1900 Instructions For Use before using the machine. Do not clean the cab with a pressure washer. We recommend hand-washing the cab using normal “garden hose” water pressure. -
Page 5: Technical Specifi Cations
ICE TM-08-HD, 5 cu. in. (82.0 cc) per revolution, 700-6000 RPM Sauer-Danfoss p/n 121.20.045.00, 1.02 cu. in. (16.7 cc) Compressor Motor displacement Heating System Capacity 20,000 BTUs/hr. Air Conditioning System Capacity 13,000 BTUs/hr. FIGURE 1-1 – SR 1900 Cab Height FORM NO. 56043123 - SR 1900 - 3... -
Page 6: Section 2 - Know Your Machine
SECTION 2 — KNOW YOUR MACHINE CAB CONTROLS Refer to Figure 2-1. Cooling Fan Switch Dome Light Heater A/C Fan Switch Heater Temperature Control A/C On/Off Switch Windshield Wiper Switch FIGURE 2-1 – Cab Controls 4 - FORM NO. 56043123 - SR 1900... -
Page 7: Heating System Components
Blower Motor Blower Assembly Heater Core Heater Air Box Assembly Filter Coolant Tube (From Engine Radiator) Cab Filter Cover Heater Hoses Heater Control Assembly HVAC Relay FIGURE 2-2 – Heating System Components FORM NO. 56043123 - SR 1900 - 5... -
Page 8: Air Conditioning System Components
Cab Filter Cover Coolant Tube (From Engine Radiator) Heater Hoses Heater Control Assembly Accessory (Gear) Hydraulic Pump Compressor Motor Hydraulic Valve Compressor Relay HVAC Relay FIGURE 2-3 – Air Conditioning System Components 6 - FORM NO. 56043123 - SR 1900... -
Page 9: Section 3 - Maintenance
Filter in warm water for 15 minutes, rinse with clean water (40 psi max. water pressure), then air-dry (don’t use compressed air). Make sure the Filter is completely dry before reinstalling. Reinstall the Filter and Cab Filter Cover, then reinstall and tighten the four screws. FIGURE 3-1 – Cab Filter FORM NO. 56043123 - SR 1900 - 7... -
Page 10: Section 4 - Heating System
GENERAL SYSTEM OVERVIEW The SR 1900 cab heating system uses an electronic Heater Control Assembly (15) to direct the appropriate amount of engine coolant to the Heater Core (9) in the Heater Air Box Assembly (10). The Blower Assembly (8) in the Heater Air Box Assembly blows fi ltered air through the Heater Core to provide warm air to the cab. -
Page 11: Electrical Troubleshooting
Motor M6. Is there continuity through the load contacts on K8 Replace the relay. (terminals 30 and 87) when the coil is energized? Check the connectors and wiring and repair as necessary. FORM NO. 56043123 - SR 1900 - 9... -
Page 12: Symptom: There Is No Cab Heat, Or The Cab Heat Cannot Be Controlled
Feedback Pin resistance values are not close to those shown in the above table, it indicates that the feedback potentiometer in the Valve Assembly is not working correctly. Replace the Valve Assembly. 10 - FORM NO. 56043123 - SR 1900... - Page 13 Install the replacement Heater Temperature Control on the Overhead Control Plate. Splice the original wires from the Valve Assembly to the replacement Heater Temperature Control using butt connectors and heat-shrink insulation. Reinstall the Overhead Control Plate in the cab. FORM NO. 56043123 - SR 1900 - 11...
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Page 14: To Eliminate Air Locks From The Cooling System
Air locks (air bubbles) in the cooling system can prevent normal coolant fl ow to the heater core. One factor that can contribute to the formation of air locks is the fact that the heater cores in the SR 1900 cabs are the highest point in the machine’s cooling system. This can make it diffi cult to purge the air from the system using traditional methods more common to the automotive industry. -
Page 15: Section 5 - Air Conditioning System
General System Overview The SR 1900 cab air conditioning system uses a Hydraulic Compressor Motor (22), powered by the Gear (Accessory) Hydraulic Pump (28), to run the A/C Compressor (21). The A/C Compressor compresses the refrigerant and transfers the hot, high-pressure refrigerant gas to the A/C Condenser (18) at the rear of the machine which condenses the refrigerant gas into a liquid. -
Page 16: Condenser Fan, Thermostat, Pressure Switch And Compressor Motor
The control side (coil) of the Compressor Hydraulic Valve L10 must be connected to battery negative (BLK wire). The control side (coil) of the HVAC Relay K8 must be connected to battery negative (BLK wire). 14 - FORM NO. 56043123 - SR 1900... -
Page 17: Electrical Troubleshooting
Motor M9 and/or Is there continuity through Replace the Relay. M10. the load contacts on K8 (terminals 30 and 87) when the coil is energized? Check the connectors and wiring and repair as necessary. FORM NO. 56043123 - SR 1900 - 15... -
Page 18: Symptom: The Blower Motors Run But There Is No Cold Air Coming Out Of The Evaporator-Heater Unit
Hopper down)? Check the auxiliary pump, Is the hydraulic pressure at the Check the compressor and air compressor motor and related auxiliary pump test port within conditioning system components. hydraulics. specs? 16 - FORM NO. 56043123 - SR 1900... -
Page 19: Component Troubleshooting
If you don’t observe differences in the hydraulic pressures similar to those in the above chart when switching the A/C on and off, it could indicate a problem with the Hydraulic Valve (L10), the Accessory Hydraulic Pump or the A/C compressor motor. FORM NO. 56043123 - SR 1900 - 17... -
Page 20: Compressor Relay (K10)
Compressor Relay and repair/replace as necessary. If there is very high resistance or no continuity across terminals 30 and 87a, replace the Compressor Relay. FIGURE 5-2 – Compressor Relay Compressor Relay (K10) 18 - FORM NO. 56043123 - SR 1900... -
Page 21: Binary Pressure Switch (S34)
If there is very high resistance or no continuity across the terminals, replace the Binary Pressure Switch. FIGURE 5-3 – Checking Continuity through the Binary Pressure Switch Binary Pressure Switch (S34) A/C Receiver/Dryer FORM NO. 56043123 - SR 1900 - 19... -
Page 22: Thermostat (S33)
Thermostat should open and you should read an open circuit through the terminals with the probe below 31° F. Once the probe warms up to 39.5° F, there should again be continuity through the Thermostat terminals. FIGURE 5-4 – Checking Continuity through the Thermostat Thermostat (S33) 20 - FORM NO. 56043123 - SR 1900... -
Page 23: Section 6 - Appendix
SECTION 6 — APPENDIX Cab Electrical Wiring Diagram FORM NO. 56043123 - SR 1900 - 21... -
Page 24: Cab Electrical Ladder Diagram
VALVE S7, HOPPER OPEN VALVE S7, HOPPER OPEN J2-8 J1-8 VALVE S8, DUST CONTROL BYPASS VALVE S8, DUST CONTROL BYPASS YEL/GRN CONTROL BOX J1-9 ASSEMBLY VALVE S9, HOPPER LOWER VALVE S9, HOPPER LOWER 22 - FORM NO. 56043123 - SR 1900... -
Page 25: Heating And A/C System Plumbing And Hydraulic Schematic
HEATING AND A/C SYSTEM PLUMBING AND HYDRAULIC FLOW SCHEMATIC Heater Core AC Evaporator Radiator Coolant Tube Feed Hot Water Return Flow Heater Control Valve Hydraulic Test Port Low Pressure Refrigerant (Gas) High Pressure Gas High Pressure Liquid FORM NO. 56043123 - SR 1900 - 23... - Page 26 Nilfi sk-Advance A/S Sognevej 25 DK-2605 Brøndby Denmark Tel: +45 43 23 81 00 Fax: +45 43 43 77 00 www.nilfi sk-advance.com...
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