Thetford DC0041CR, Owner'S Manual

Page: 10 / 24

Owner’s Manual 10
Refrigerator Maintenance Checklist
Read and understand the following maintenance sections of this manual.
THETFORD - China is not responsible for installation, adjustment, alteration, service, or maintenance
performed by anyone other than an authorized THETFORD - China Service Center.
Have an authorized THETFORD - China Service Center do these annual safety and maintenance checks:
- Make sure the DC voltage is correct (See the “Electrical current necessary” section).
- The wire connections must be clean, tight and free of corrosion. If any of these items are not correct:
- A voltage drop to the refrigerator will occur.
- The voltage drop will decrease the cooling performance of the refrigerator.
Disconnect the positive (+) DC power supply wire from the battery before you do a “fast charge” of the
battery. Failure to disconnect the positive (+) power supply wire from the battery during a “fast charge”
can cause damage to the refrigerator or other 12 volt DC appliances.
- Make sure the area at the rear of the refrigerator is free of anything, especially combustible materials, gasoline, and other
flammable vapors and liquids.
Over heating shut-off device operation:
Operating the refrigerator in high ambient temperatures can over heat the cooling unit and cause premature failure of the compressor
(See the label inside the refrigerator).
To protect the cooling unit from over heating, the refrigerator will automatically shut-off when the temperature of the power module is higher
than 212° F (100° C). The refrigerator will not restart until the temperature of the power module is lower than 176° F. (80° C).
Low voltage protection system:
In order to prevent completely draining the battery, the refrigerator will automatically shut-off when the DC supply voltage becomes too
low. The refrigerator will not restart until the DC supply voltages increases. These shut-off and restart voltage levels are:
12VDC Operation 24 VDC Operation
Shut-off 10.9 VDC Shut-off 23.8 VDC
Restart 12.2 VDC Restart 25.2VDC
If the DC supply voltage is between 17.0 and 23.8 VDC, the refrigerator will not operate.
Over current protection system:
Your refrigerator has an over current protection system in the electronic circuit to prevent damage to the inverter which may occur due
to a reverse polarity connection.
If the refrigerator does not operate and the green power light does not come on, check the fuse, which is located in-line with the DC
connector, and the polarity of the DC power supply. If the refrigerator still does not operate, another problem can exist in the power
module. Have an authorized THETFORD - China Service Center check the refrigerator.
CAUTION
!
NOTICE