6
The unit is a manual defrost type and will require defrosting when the ice buildup is 1/4” thick or more
around the cabinet top. Defrost as often as required to prevent excessive frost buildup inside the unit.
Excessive ice build-up will reduce cooling efficiency and may cause product loss and equipment dam-
age.
To perform a manual defrost follow these steps.
1.
•
Remove all product from the unit.
2.
•
Disconnect from electrical receptacle.
3.
•
Allow sufficient time for all ice buildup to melt or use warm water or a hair dryer to melt ice.
4.
•
Remove the compressor cover from the back of the unit (see page 5 for instructions)
5.
•
Place a suitable size pan under the drain tube.
6.
•
Remove dividers, baskets, and false bottom from the unit.
7.
•
Remove the drain plug from the interior cabinet bottom.
8.
•
Drain all the water and wipe down the inside of the unit until clean and dry.
8•
(See cleaning instructions, page 4)
9. Replace the drain plug in the interior cabinet bottom.
10. Remove the pan and re-install the compressor cover.
11. Replace the dividers, baskets, and false bottom into the unit.
12. Plug the unit in and verify if it is getting cold.
13. Restock the unit when desired temperature is reached.
3
WARNING:
Make sure unit is disconnected from power supply before defrosting.Do not place electrical devices
into the unit. Do not use sharp tools to remove ice. Do not use abrasive cleaners, waxes, concentrated
detergents, or bleach on your unit. Failure to follow these instructions can result in death, fire, electrical
shock or damage to the unit.
Problem
Possible Cause
Action
Unit does not run.
• Cord not connected to the
receptacle
• No power in receptacle
• Thermostat set to off position
• Connect cord to receptacle
• Contact your electrician
• Turn thermostat clockwise to turn the
unit on and adjust
•
later to reach the
desired temperature
Unit is not pulling temperature
down cold enough.
• Ice build up on cabinet inner
walls
• Unit located close to heat source
or direct sunlight or ambient
temperature is higher than
recommended
• Condenser fan not running
• Poor air flow behind the unit
• Glass lid open
• Drain plug loose or removed
• Thermostat set too warm
• Perform defrost as described on Page 3
• Move unit away from heat sources or
direct sunlight. Ensure ambient
temperature is as per ratings on serial
plate
• Call for service
• Provide proper space of at least 6”
behind the unit
• Close glass lid & check glass lid seal
for proper sealing
• Ensure that the drain plug is firmly
pushed into the drain hole
• Turn thermostat clockwise to make it
colder
for online reference go to www.minusforty.com
TROUBLESHOOTING GUIDE
DEFROSTING
WARNING
Make sure unit is disconnected from power supply before any service. Service to be conducted
by a certified technician only.
