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N301 (93 liter 2-way operation with propane gas or 240 volts AC)
N301.3 (93 liter 3-way operation with propane gas, 240 volts AC, or 12 volts DC )
Thetford Australia
41 Lara Way
Campbellfi eld Vic 3061
Service Manual
For Australian refrigerator models:
Table of Contents
Introduction .....................................................................2
Safety Awareness...........................................................2
Safety Instructions ..........................................................2
Specifi cations .................................................................3
Operating limits ........................................................3
Ratings .....................................................................3
Current draws ..........................................................3
Replacement fuses ..................................................3
Ventilation Requirements ...............................................3
Propane Gas Components .............................................4
Examine the gas supply system for leaks ................4
Electrical Components....................................................4
Examine the 240 volts AC supply ............................4
Controls ..........................................................................5
Ignition and Start Up .......................................................5
Ignition - propane gas operation ..............................5
Start up - AC electric operation ................................5
Shut down ................................................................5
Battery drain .............................................................6
Refrigerator Maintenance ...............................................6
Gas fl ame appearance .............................................6
Remove and clean the burner orifi ce .......................6
Diagnosing Cooling Problems ........................................6
Wiring Pictorial................................................................7
Troubleshooting ..............................................................8
Replacement Instructions .............................................11
............................................................ 11
................................................................... 11
AC heater ...............................................................11
DC heater (3-way models) .....................................11
Thermocouple ........................................................12
Thermocouple interrupter .......................................12
Safety valve ...........................................................12
Refrigerator ............................................................12
Thetford Customer Service
Telephone: (61) 03-9358-0700
Fax: (61) 03-9357-7060
Web Site: www.thetford.com.au
Part No. 631509C (01-02-12)
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Summary of Contents for Thetford N301
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Page 1: Table Of Contents
Service Manual For Australian refrigerator models: N301 (93 liter 2-way operation with propane gas or 240 volts AC) N301.3 (93 liter 3-way operation with propane gas, 240 volts AC, or 12 volts DC ) Table of Contents Introduction ..............2 Safety Awareness............2 Safety Instructions ............2... -
Page 2: Introduction
Disconnect both the AC and DC power sources before Only use genuine Thetford replacement parts on the refrigera- doing any maintenance work on the refrigerator. tor. Generic parts do not meet Thetford’s specifi cations for ■ Do not bypass or change the refrigerator’s electrical reliability, performance, and safety and will void the Thetford components or features. -
Page 3: Specifi Cations
If this air fl ow is blocked or decreased, the refrigerator may not cool correctly. Each Thetford model is certifi ed by AGA for correct ventilation. Service Manual N301 Model - 3... -
Page 4: Propane Gas Components
NOTE: This in-line fuse is necessary for added safety, even though the refrigerator has a DC fuse in the control assembly. 4 - Service Manual N301 Model... -
Page 5: Controls
Shut down ■ Make sure there are no combustible materials in or around the refrigerator. Turn the selector switch to the OFF position ( Turn the thermostat to the 1 position. Figure 1. Controls Service Manual N301 Model - 5... -
Page 6: Battery Drain
Make sure that the air fl ow through the back of the refrig- erator is not decreased or blocked. Figure 3. Burner Box Location Make sure the ventilation baffl e is correctly installed. 6 - Service Manual N301 Model... -
Page 7: Wiring Pictorial
9........-12 VDC Power supply (3-way models) 4 ............... Thermocouple 10......+12 VDC Power supply (3-way models) 5 ..........Thermostat / gas safety valve 11..........20 Amp fuse (3-way models) 6 ............Thermocouple interrupter 12..........DC heater (3-way models) Service Manual N301 Model - 7... -
Page 8: Troubleshooting
AC heater. thermostat? thermostat? (black wires) Correct power Replace Correct power source to thermostat and source to heater thermostat. start up. and start up. Figure 6. AC Troubleshooting Flowchart 8 - Service Manual N301 Model... - Page 9 20 Amp fuse? Correct power Replace Correct power Replace 20 Amp source toheater selector switch source to fuse and and start up. and start up. selector switch. start up. Figure 7. DC Troubleshooting Flowchart Service Manual N301 Model - 9...
- Page 10 0 milli-volts on on one terminal, on both on both both terminals. 0 milli-volts terminals. terminals. on the other. Replace Replace Replace Replace thermocouple. safety valve. interrupter. safety valve. Figure 8. No Flame Troubleshooting Flowchart 10 - Service Manual N301 Model...
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Page 11: Replacement Instructions
Pull the AC heater up and out of the heater well. Push the replacement AC heater down into the heater well. NOTE: Make sure the bead of weld on the AC heater touches the top of the heater well. Service Manual N301 Model - 11... -
Page 12: Thermocouple
To install the refrigerator, reverse steps 1 - 7. interrupter. Examine all the gas connections for leaks. Attach the wires to the thermocouple interrupter. 10. Open the valve at the main propane gas tank(s). 11. Examine all the gas connections for leaks. 12 - Service Manual N301 Model...
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