Use and Care

Micro Matic Power Pack Service Manual

ELECTRONIC TEMPERATURE CONTROL WITH DISPLAY

NOTE: When the unit leaves the factory the electronic thermostat is pre-set to the following

parameters:

Temperature Scale: F (Farenheit)

Setpoint: 30

Differential: 3

Operating Mode: C1 (Cooling)

NOTE: To ensure the correct operation of your unit these parameters must be adhered to.

NOTE: The Keypad Lockout switch must be in the “UNLOCK” position (factory setting) before

adjusting the control. If the keypad is locked, pressing buttons has no effect on the control. The

Keypad Lockout switch is located on the back inside of the front cover. If necessary, remove the

cover by loosening the four captive cover screws.

Changing Temperature Units

1. Press Set button once to display temperature unit.

2. Press the Up or Down button to toggle between °F and °C.

3. Continue pressing and releasing Set button until tank temperature is displayed in normal operating

mode (“S1” not flashing).

Setting the Setpoint

Before setting the setpoint, be sure the control is set to the temperature units you want to use, Celsius or

Fahrenheit.

To view and adjust the setpoint, use the following method:

1. Press the Set button twice to display Setpoint (“S1” flashing).

2. Press the Up or Down button to adjust Setpoint.

3. Continue pressing and releasing Set button until tank temperature is displayed in normal operating

mode (“S1” not flashing).

NOTE: If no entries are made for thirty (30) seconds, the control reverts back to the tank temper-

ature display.

MAINTENANCE

1. Inspect the unit monthly to ensure that the glycol level is maintained to the fill level.

2. If the level is low replace with a Micro Matic Polar Flo glycol solution, (mixed 2 ½ parts water to 1

part glycol).

3. If there is evidence of ice build up in the unit, allow the ice to melt and replace all the water/glycol

solution with a fresh solution.

4. The glycol/water solution should be changed every 2 years. In regions of high humidity consider-

ations should be given to replacing the solution on an annual basis.

5. Check and clean the condenser fins every 6 months.

6. Check that there is adequate air flow through the unit ensuring enough space all around and that

there are no obstructions in front of the air flow vents.

7. Check the condition and effectiveness of the trunk line insulation.

8. At regular intervals, to be determined by the owner, the unit should be checked for electrical safety.