Micro Matic MMPP4301-PKG, MMPP4301-PKG-WC, MMPP4301, MMPP4301-WC, MMPP4302-WC Service Manual
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Power Pack Service Manual
MMPP4301-EP
MMPP4301
MMPP4301-WC
MMPP4301-PKG
MMPP4301-PKG-WC
MMPP4302
MMPP4302-WC
MMPP4302-PKG
MMPP4302-PKG-WC
MMPP4305-PKG
MMPP4305-PKG-WC
MMPP4305-PKG-3
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TABLE OF CONTENTS
Equipment Specications .................................................................................................................. 2
Installation and Operation .................................................................................................................. 3
75' Unit ................................................................................................................................... 3
125', 250', and 500' Units ....................................................................................................... 4
Maintenance ....................................................................................................................................... 4
Electronic Temperature Control with Display ..................................................................................... 5
Changing a Glycol Pump .................................................................................................................... 6
Replacing Motor ................................................................................................................................. 7
Replacing Thermostat ........................................................................................................................ 7
Troubleshooting ................................................................................................................................. 8
Typical Spare Parts ............................................................................................................................ 9
Wiring Diagrams ............................................................................................................................... 10
Warranty .......................................................................................................................................... 14
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185 (low)
235 (high)
185 (low)
235 (high)
EQUIPMENT SPECIFICATIONS
MMPP4301-WC MMPP4301-PKG-WC MMPP4302-WC MMPP4302-PKG-WC MMPP4305-PKG-WC
21.1 11.0 14
15.3
17.5
11.5
11.5 15.5
185 (low)
235 (high)
185 (low)
235 (high)
185 (low)
235 (high)
185 (low)
235 (high)
1 1 2 1 2 2 3
MMPP4301-EP MMPP4301 MMPP4301-PKG MMPP4302 MMPP4302-PKG MMPP4305-PKG MMPP4305-PKG-3
Air Cooled
Water Cooled
Glycol Pumps
Cooling Distance 75' 125' 125' 250' 250' 500' 500'
240 80 80 80 80 80 80
Vertical Gear Gear Gear Gear Gear Gear
Pump Type
Pump GPH
1/3 1/3 1/3 1/2 1/2 1 1
115 115 115 115 115 208/230 208/230
Motor HP
Voltage
7.0
5-15P 5-15P 5-20P 5-20P L5-30P 6-15P 6-15P
Plug Type
Amps (Running)
10 12 12 16 16 48 48
R134a R134a R134a R134a R134a R134a R134a
Refrigerant
185 (low)
Charge (oz.)
Refrigeration
2,300 2,600 2,600 3,400 3,400 7,000 7,000
235 (high)
Pressure
BTUs/H
Dimensions
90 110 130 130 170 190 205
19" x 18" x 26" 26" x 18" x 26" 26" x 18" x 26" 29" x 18" x 26" 29" x 18" x 26" 34" x 18" x 26" 34" x 28" x 26"
H x W x D Includ-
ing pump(s) and
motor(s)
Weight (lbs)
5 11.5 11.5 11.5 11.5 11.5 11.5
1.5" 1.5" 1.5" 1.5" 1.5" 1.5" 1.5"
ETL Listed ETL Listed ETL Listed ETL Listed ETL Listed ETL Listed ETL Listed
Bath Capacity (gal)
Bath Insulation
Thickness
Micro Matic reserves the right to change specications without notice.
Approval
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INSTALLATION AND OPERATION
1. Remove packaging from the unit in the vicinity of the area where it will be installed.
2. Carefully lift the unit into the desired position.
NOTE: DO NOT PUSH OR SLIDE UNIT – Damage will be caused to the legs if the unit
is pushed into position.
PLACEMENT
• It is not recommended to install a power pack on top of a walk in cooler.
• It is not recommended to install a power pack outside.
• Always ensure a minimum clearance of 18 inches above and in front of a power pack.
This allows for proper air ow around unit.
• Ambient operating temperature range is 50-90° F for all air cooled models.
75' UNIT
INSTALLATION STEPS
(Assure tower connections are complete.)
1. Connect one of the glycol tubes to the pump inlet. Insulate any exposed tubing.
2. Connect the second glycol line to the pump outlet. Insulate any exposed tubing.
3. Carefully push the glycol bath lid to one side, allowing sufcient space to ll the bath with liquid.
4. Inspect the bath for debris.
5. Fill the glycol bath with Micro Matic Polar Flo glycol solution (mixed 2 ½ parts water to 1 part glycol)
Fill the bath to the full level on the glycol level indicator.
6. Connect unit to the electrical outlets capable of handling the required voltage loads. This should be
carried out by suitably trained personnel and comply with all state and national electrical codes.
7. Glycol level will fall as glycol is pumped through the glycol lines. Continue to ll the bath to the ll level
on the glycol level indicator.
8. Replace top cover.
9. Inspect for any leaks.
10. Glycol temperature will fall slowly to 29°F.
NOTE: To adjust the glycol temperature, please see Adjusting Electronic Thermostat.
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125', 250', AND 500' UNITS
INSTALLATION STEPS
(Assure tower connections are complete.)
1. Remove the refrigeration deck from the unit.
2. Inspect the glycol tank for any debris.
3. Connect one of the glycol lines from the trunk line to the pump outlet. Insulate any exposed tubing.
NOTE: In units with more than one pump, connect a glycol line to each pump outlet.
4. Connect the second glycol line from each circuit to the glycol bath inlet.
5. Fill the glycol bath with Micro Matic Polar Flo glycol solution:
• 125’ & 250’ units: 2 ½ parts water to 1 part glycol.
• 500’ unit: 1 part distilled water to 1 part glycol.
Fill bath to the level of the ll line on the glycol level indicator.
6. Replace the refrigeration deck.
7. Remove electrical outlets capable of handling the required voltage loads. This should be carried out by
suitably trained personnel and must comply with all state and national codes.
8. Glycol level will fall as glycol is pumped through the glycol lines. Continue to ll the bath to the full level
on the glycol level indicator.
9. Inspect for any leaks.
10. Temperature of the glycol will fall slowly to 29°F.
NOTE: To adjust the glycol temperature, please see Adjusting Electronic Thermostat.
MAINTENANCE
1. Inspect the unit monthly to ensure that the glycol level is maintained to the full level.
2. If the level is low replace with a Micro Matic Polar Flo glycol solution:
• 75', 125', 250' units: mixed 2 ½ parts water to 1 part glycol.
• 500' units: 1 part distilled 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 mixed per above instructions.
4. The glycol/water solution should be changed approximately every 18 months. In regions of high humidity
considerations should be given to replacing the solution on an annual basis.
5. Check and clean the condenser ns every sixty (60) days.
6. Check that there is adequate air ow through the unit ensuring enough space all around and that there
are no obstructions in front of the air ow 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.
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