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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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 (Fahrenheit)
Setpoint: 29° F
Differential: 3° F
NOTE: To ensure the correct operation of your unit these parameters must be adhered to.
ADJUSTING ELECTRONIC THERMOSTAT
HOW TO SEE THE SETPOINT
1. Push and immediately release the SET key: the display will show the set point value.
2. Push and immediately release the SET key or wait for ve (5) seconds to display the probe value again.
HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than two (2) seconds to change the set point value.
2. The value of the set point will be displayed and the * LED starts blinking.
3. To change the Set value push the (up) or (down) arrows.
4. To lock the new set point value push the SET key again and wait 15 seconds.
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CHANGING A GLYCOL PUMP
75' UNIT
1. Unplug unit from receptacle.
2. Remove four (4) screws holding pump to bath lid.
3. Cut tubing slightly above outlet tting on pump.
4. Remove pump through hole in top of bath lid.
5. Insert new pump through opening in lid.
6. Attach pump outlet hose and clamp with stainless steel clamp.
7. Replace mounting screws and plug unit into receptacle.
125', 250' AND 500' UNITS
Note: A pinch off tool is required to complete this repair
1. Unplug unit from receptacle.
2. Pinch off glycol supply line to bottom of pump allowing enough room to remove clamp safely.
3. Hold pump rmly and loosen clamp between pump and motor.
4. With clamp loose remove pump and drive key.
5. Install new key and pump by reattaching clamp making sure alignment of key is correct between pump
and motor.
6. Reattach glycol supply hose and install clamp.
7. Remove pinch off tool and plug unit into receptacle.
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REPLACING MOTOR
125', 250' AND 500' UNITS
Note: Replacement motor is not supplied with electrical cord. Remove and reuse cord from
defective motor.
1. Unplug unit from receptacle.
2. Support pump and loosen clamp holding pump to motor. As clamp is loosed pump will eventually
disconnect from motor. Make sure pump does not damage glycol supply line as it becomes free from motor.
3. With pump free from motor remove drive key and replace.
4. While supporting motor remove four (4) nuts and hardware from mounting studs.
5. Mount new motor by aligning mounting bracket with mounting studs and reattaching mounting nuts and
hardware. Note: new motor is supplied with mounting bracket.
6. Reattach pump to motor with clamp making sure new drive key aligns with motor shaft.
7. Locate defective motor and remove electrical connection cover plate (follow cord to where it enters back
of motor) exposing cord connections. Remove ground connection by unscrewing green screw and
removing ground wire. Unplug remaining 2 wires by pulling rmly on connections. Reattach cord to new
motor by afxing ground wire to green ground screw and plugging 2 wires to motor connections. Place
cord in electrical wire channel in motor housing and reattach electrical connection cover plate.
8. Plug cord into receptacle.
REPLACING THERMOSTAT
ALL UNITS
1. Unplug unit from receptacle.
2. Remove the screws holding the thermostat housing to the unit. Slide the white plastic brackets
backwards off of the thermostat. Remove thermostat from housing.
3. Making note of which wire is connected to which number on the thermostat, remove wires using small
slotted screwdriver. Reattach wires to correct numbers on new thermostat and reassemble into housing.
NOTE: All XR02 thermostats are supplied with a four wire connector. If the unit has an old XR20
thermostat, connect the 120v supply wires that were on terminals 7 and 8 to the harness wires coming
from terminals 6 and 7 on the new XR02. The wires that were connected to terminals 4 and 5 on the old
thermostat should connect to the harness wires coming from terminals 8 and 9.
4. Reattach thermostat housing to unit and plug unit into receptacle.
5. For thermostat setting instructions see page 5.
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TROUBLESHOOTING
Trouble Cause Solution
1. Excessive foam A.
2. A. Compressor relay or capacitor
Compressor does
not start (no hum),
but the fan
motor runs.
Compressor starts
3.
and continues to
run until freeze up
and will not cut off.
4 Compressor does
not run but hums.
5. Warm beer A. Defective Pump
Warm walk-in cooler
B.
Check applied pressure to keg
C. Check equipment C. Check the physical equipment from keg to faucet
D. Warm product lines D. Refer to #5
malfunction
B. Inadequate voltage B. Measure voltage across common and run terminal
C. Compressor failure C. Replace compressor
A. Thermostat control failure A. Replace thermostat
B. Freon leak B. Repair leak and recharge
A. Inadequate voltage A. Measure voltage across common and run terminal
B. Starting relay malfunction B. Replace starting relay. Be sure to use correct
C. Compressor malfunction C. Replace compressor
(check motor also)
B. Defective motor (check pump also) B. Replace motor
C. Refrigeration unit not running
D.
Trunk lines located in
overheated area
E.
Trunk lines ooded in
PVC chase.
F. Uninsulated or poorly
insulated lines
G. Thermostat
H. Condenser fan motor not working
I. Freon Leak
J. Dirty condenser
K. Condensation inside trunk line
insulation (may be caused from
cleaning lines)
Adjust cooler temperature to 36° to 38° F
A.
(use a quality thermometer)
B.
Adjust setting on regulator for proper ow rate of
two (2) ounces per second.
A. Replace compressor relay or capacitor
on compressor. Voltage must not drop below 90%
of rated voltage.
on compressor. Voltage must not drop below 90%
of rated voltage.
relay. Failure to use correct relay will cause
compressor failure.
A.
Check return line in reservoir for liquid ow.
Replace pump on 125’, 250’, and 500’ units.
Check condition of key between pump and motor.
C.
Refer to #2
D.
Remove from any hot water pipes or kitchen area
with stove or glass washer.
E.
Remove lines from PVC, thoroughly dry PVC and
repair or replace trunk line as needed.
F.
All lines should be fully insulated from cooler into
dispenser. Includes glycol lines from power pack
into cooler.
G. Adjust temperature to colder setting.
H. Replace condenser fan motor
Repair leak and recharge
I.
Clean the condenser
J.
K. Check trunk housing in areas for drooping or
low spots, split insulation approximately 5” and
separate. Allow any water to drain, then air dry
the seal closed.
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TYPICAL SPARE PARTS
Component Part Number 75' 125' 250' 500'
Gear Pump and Motor Assy MMPP4301-PM X X
Gear Pump Assy PP4301-PA X X X
Motor (1/3 HP) MMPP4301-M X X
Motor (1/3 HP) MMPP4305-M X
Gear Pump Key PP4301-KEY X X X
Clamp PP4301-CLAMP X X X
Thermostat XR02CX4N4FQ MMPPDT100 X X X
Thermostat XR02CX5N4FQ MMPPDT500 X
Vertical Pump MMPP4301-EPVP X
75' & 125' Compressor MMPP4301-EP-C X X
125' Refrigeration Deck MMPP4301-UPPER X
250' Refrigeration Deck MMPP4302-UPPER X
250' Compressor MMPP4302-C X
500' Compressor MMPP4305-C X
Leg MMPP4301-LEG X X X X
Nipple for Gear Pump-Straight 617C X X X
Nipple for Gear Pump-90 Degree 617C-90 X X X
On/Off Power Switch MMPP4301-SW X X X
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WIRING DIAGRAMS
MMPP4301-EP
MMPP4301
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MMPP4301-PKG
MMPP4302
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MMPP4302-PKG
MMPP4305-PKG
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MMPP4305-PKG-3
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WARRANTY
All power packs carry a full warranty against defects in material and workmanship for a period of one year from date of sale.
Defective parts, subject to Micro Matic inspection, will be replaced or repaired during the one year period on a no charge
basis. The compressor has a standard prorated ve year warranty. All loss of sales must be borne by the purchaser.
Warranty Claims Procedure:
Purchaser shall notify Micro Matic of any defect discovered in the Product during the Warranty Period, and obtain a return
authorization number. Purchaser must ship the Product per Micro Matic’s instruction. After receipt of the Product, Micro
Matic shall, at its option, repair (or authorize the repair of), or replace or refund the purchase price for the Products found
by Micro Matic to be defective. Micro Matic’s determination of defects is nal. Failure by Purchaser to give notice of claims
of breach of warranty within the Warranty Period shall be deemed an absolute and unconditional waiver of Purchaser’s
claim for such defects. Products repaired or replaced during the Warranty Period shall be covered by the foregoing
warranties for the remainder of the original Warranty Period or ninety (90) days from the date of delivery of the repaired or
replaced Products, whichever is longer.
ALL REPAIRS MUST BE FIRST AUTHORIZED BY MICRO MATIC PER THE ABOVE PROCEDURE. UNAUTHORIZED
REPAIRS WILL NOT BE REIMBURSED BY MICRO MATIC UNDER ANY CIRCUMSTANCES.
Micro Matic is not responsible for parts damaged from factors including, but not limited to any part that has been subject
to misuse, neglect, alteration, accident, unauthorized service, abuse, or to any damage caused by transportation. This
warranty does not cover items subject to normal wear and tear (gaskets, seals, o-rings, etc.).
Purchaser Responsibility:
Except as expressly provided in this Agreement, Purchaser assumes all other responsibility for any loss, damage, or injury
to persons or property arising out of, connected with, or resulting from the use of Products, either alone or in combination
with other products or components. In no event will Micro Matic be responsible for incidental, consequential or punitive
damages of any kind, including without limitation, claims for loss of beer, loss of gas or loss of sales.
Other Warranties Disclaimed:
These are the sole and exclusive warranties and conditions given by Micro Matic with respect to the products and services
and are in lieu of and exclude all other warranties or conditions, express or implied, arising by operation of law or otherwise,
including without limitation, warranties of merchantability, tness for a particular purpose and non-infringement, whether
or not the purpose or use has been disclosed to Micro Matic in specications, drawings or otherwise, and whether or not
Micro Matic’s products are specically designed and/or manufactured by Micro Matic for purchaser’s use or purpose.
Limitation of Remedy:
Purchaser’s sole and exclusive remedy for breach of any warranty or condition under this Article IV shall be limited to the
repair, correction or replacement, or refund of the purchase price paid in respect of the defective Products, unless the
claim falls under the provisions of Section 6.2, in which case Purchaser may also claim damages in accordance with the
terms of Section 6.2.
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00093-D1009 Copyright © 2009 Micro Matic USA, Inc. All Rights Reserved.
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