Norcold NR740 - Cleaning the Refrigerator Interior; Battery Maintenance and Charging

5
- Remove all food from the refrigerator.
Do not use abrasive cleaners, chemicals, or scouring pads because
they can damage the inside of the refrigerator.
- Wash the inside of the refrigerator and the door gasket with a solution of liquid dish
detergent and warm water.
- Rinse with clean water and dry.
- After cleaning, put a thin coating of petroleum jelly on the hinge side of the gasket to
keep it soft and to prevent it from rolling.
Battery Maintenance
Over cooling drains your battery
When the ambient temperature is between 70° and 90° F, keep the thermostat at the “3“
position to avoid an excessive drain of the battery. When making ice, or storing frozen
foods, turn the thermostat to the coldest setting “5“.
Maintain the battery
If the charge of your battery is not sufcient, the cooling performance of your refrigerator
decreases.
Only use a “quick charger” on the battery if the thermostat is
turned to “OFF”.
Check the Battery charge Level
A fully charged battery will have a specic gravity reading of between 1.260 and 1.280.
The battery voltage is best indicated when the refrigerator is “ON” and the battery charging
system is “OFF”. Charge the battery when the specic gravity reading is less than 1.200.
For your reference
The wiring diagram shown below is recommended for dual battery hookup (See
Art02373)
.
NOTICE
CAUTION
!