Manitowoc P Series Installation, Use And Care, And Service Manual
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Manitowoc P Series Installation, Use And Care, And Service Manual

Point of use ice machine
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P Model
Point of Use
Ice
Machine
Installation,
Use and Care,
and Service Manual
Thank you for selecting a Manitowoc Ice Machine, the dependability leader in ice making equipment and
related products. With proper care and maintenance, your new Manitowoc Ice Machine will provide you
with many years of reliable and economical performance.

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Summary of Contents for Manitowoc P Series

  • Page 1 Use and Care, and Service Manual Thank you for selecting a Manitowoc Ice Machine, the dependability leader in ice making equipment and related products. With proper care and maintenance, your new Manitowoc Ice Machine will provide you with many years of reliable and economical performance.
  • Page 2 Part Number 80-1125-3...
  • Page 3 Manitowoc Ice Machine. Read and understand this manual. It contains valuable care and maintenance information. If you encounter problems not covered by this manual, feel free to contact Manitowoc Ice, Inc. We will be happy to provide assistance.
  • Page 5 Manitowoc, WI 54221-1720 Phone: (920) 682-0161 Service Fax: (920) 683-7585 We reserve the right to make product Web Site: http://www.manitowocice.com improvements at any time. ã1998 Manitowoc Ice, Inc. Specifications and design are subject to Litho in USA change without notice.

  • Page 6: Table Of Contents

    Table of Contents Table of Contents Section 1 - General Information Model Numbers ..............................1-1 Accessories ................................1-1 Model/Serial Number Location........................1-2 Owner Warranty Registration Card ......................1-3 Warranty Coverage............................1-3 Section 2 - Installation Instructions General ................................2-1 Ice Machine Dimensions ..........................2-1 Location of Ice Machine ..........................2-2 Location of Condensing Unit...........................2-2 Leveling the Ice Machine..........................2-2 Electrical Service ..............................2-3...
  • Page 7 Table of Contents Table of Contents (cont.) Section 5 - Before Calling for Service Checklist................................5-1 Safety Limit Stand-By Mode...........................5-2 Section 6 – Service Energized Parts Chart .............................6-1 Main Fuse................................6-2 Bin Switch .................................6-2 Toggle Switch..............................6-4 Harvest Heater Element ..........................6-4 Harvest Heater Element Thermostat ......................6-5 Low Pressure Control ............................6-5 Suction Solenoid valve .............................6-6 Line Set Isolation valves ..........................6-6...

  • Page 8: Section 1 - General Information

    PD0532N MANITOWOC CLEANER AND SANITIZER PY0534N Manitowoc Ice Machine Cleaner and Sanitizer are Accessories available in convenient 16 oz. (473 ml) bottles. These are the only cleaner and sanitizer approved for use Contact your Manitowoc distributor for these with Manitowoc products.

  • Page 9: Model/Serial Number Location

    OWNER WARRANTY REGISTRATION CARD. below. These numbers are required when requesting They are also listed on the MODEL/SERIAL information from your local Manitowoc distributor, NUMBER DECAL affixed to the ice machine. service representative, or Manitowoc Ice, Inc. P-520...

  • Page 10: Owner Warranty Registration Card

    REGISTRATION CARD, Manitowoc will use the 4. Damage caused by improper installation of the date of sale to the Manitowoc Distributor as the first ice machine, electrical supply, water supply or day of warranty coverage for your new ice machine.
  • Page 11 General Information Section 1 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 12: Section 2 - Installation Instructions

    These instructions are provided to assist the qualified Important installer. Check your local Yellow Pages for the Failure to follow these installation guidelines may name of the nearest Manitowoc distributor, or call affect warranty coverage. Manitowoc Ice, Inc. for information regarding start- up services.

  • Page 13: Location Of Ice Machine

    Installation Instructions Section 2 Location of Ice Machine Leveling the Ice Machine The location selected for the ice machine must meet 1. Screw the leveling legs onto the bottom of the the following criteria. If any of these criteria are not bin.

  • Page 14: Electrical Service

    Section 2 Installation Instructions Electrical Service GENERAL FUSE/CIRCUIT BREAKER A separate fuse/circuit breaker must be provided for WARNING each ice machine. Circuit breakers must be H.A.C.R. rated (does not apply in Canada). All wiring must conform to local, state and national codes.

  • Page 15: Water Service/Drains

    • Drain lines must have a 1.5-inch drop per 5 feet Important of run (2.5 cm per meter), and must not create If you are installing a Manitowoc Tri-Liminator traps. water filter system, refer to the Installation • The floor drain must be large enough to Instructions supplied with the filter system for ice accommodate drainage from all drains.
  • Page 16 Section 2 Installation Instructions WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS CAUTION Plumbing must conform to state and local codes. Water Water Ice Machine Tubing Size Up to Ice Location Temperature Pressure Fitting Machine Fitting 3/8” (9.5 mm) Ice Making 33°F (0.6°C) Min. 20 psi (137.9 kPA) Min.

  • Page 17: Refrigerant Charge

    Installation Instructions Section 2 REFRIGERANT CHARGE FOUR ICE MACHINE INSTALLATIONS The Copeland condensing unit ships from the When connecting a fourth ice machine: factory with a refrigerant charge appropriate for installation with three ice machines, and line sets of • Refrigeration systems and compressors with up to 50' (15.25 m) per ice machine.

  • Page 18: Routing Pre-Charged Linesets

    Section 2 Installation Instructions Line Set Installation Maximum line set distance is 50′ per ice machine. Line Set* Maximum line set rise is 35′ per ice machine. Machine Maximum line set drop is 35′ per ice machine. PT-20-R404A P520 and PT-35-R404A Any line set routed below the condensing unit is P530...

  • Page 19: Lengthening Or Reducing Line Set Lengths

    Installation Instructions Section 2 Guidelines for Routing Pre-Charged Line Sets First cut a circular hole in the wall or roof for tubing CAUTION routing. It is recommended that the line set end with If a line set has a rise followed by a drop, another the service valves be connected to the ice machine.

  • Page 20: Connecting A Lineset

    Section 2 Installation Instructions CONNECTING A LINE SET LINE SET SERVICE VALVE 1. Remove the dust caps from the line set, Lines set service valves leave the factory in the manifold and ice machine. open position. 2. Apply refrigeration oil to the threads on the Verify all line set service valves are open and quick disconnect couplers before connecting.

  • Page 21: Installation Checklist

    Section 2 Installation Checklist Before Starting the Ice Machine Is the ice machine level? All Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new Has all of the internal packing been removed? installations do not require any adjustment.

  • Page 22: Section 3 - Ice Machine Operation

    Section 3 Ice Machine Operation ction 3 Section 3 Ice Machine Operation COMPONENT IDENTIFICATION P520 P530 ICE THICKNESS PROBE LINE DRIER AEROQUIP FITTINGS DISTRIBUTION TUBE CONTROL BOX CONTROL BOX ON/OFF/CLEAN EXPANSION ON/OFF/CLEAN TOGGLE VALVE TOGGLE SWITCH SWITCH ICE THICKNESS AEROQUIP SUCTION PROBE FITTINGS...

  • Page 23: Ice Making Sequence Of Operation

    Ice Machine Operation Section 3 Ice Making Sequence of Operation INITIAL START-UP OR START-UP AFTER HARVEST SEQUENCE AUTOMATIC SHUT-OFF 4. Water purge The water pump continues to run and the water dump 1. Water Purge Before refrigeration begins the water pump and water valve energizes for 45 seconds, to purge the water in dump solenoid are energized for 45 seconds, to the sump trough.
  • Page 24 Section 3 Ice Machine Operation THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 25: Operational Checks

    Section 3 Operational Checks GENERAL ICE THICKNESS CHECK Your Manitowoc ice machine was factory-operated The ice thickness probe is factory-set to maintain the and adjusted before shipment. Normally, a newly ice bridge thickness at 1/8” (3.2 mm). installed ice machine does not require any NOTE: Make sure the water curtain is in place when adjustment.
  • Page 26 Section 3 Ice Machine Operation HARVEST SEQUENCE WATER PURGE WARNING The harvest sequence water purge adjustment may be Disconnect the electrical power to the ice machine used when the ice machine is hooked up to special at the electrical disconnect before proceeding. water systems, such as a de-ionized water treatment system.
  • Page 27 Ice Machine Operation Section 3 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 28: Section 4 - Maintenance

    Heavy stains should be removed with stainless steel safety precautions that must be followed, call your wool. Never use plain steel wool or abrasive pads. local Manitowoc service representative to perform They will scratch the panels. the maintenance procedures for you.

  • Page 29: Interior Cleaning And Sanitizing

    Step 2 To start self-cleaning, move the toggle switch printed on bottles before use. to the CLEAN position. Step 3 Add the proper amount of Manitowoc Ice CAUTION Machine Cleaner to the water trough. Do not mix Ice Machine Cleaner and Sanitizer...
  • Page 30 A. The ice machine may be set to start and finish switch to the CLEAN position. a self-sanitizing procedure, and then Step 3 Add the proper amount of Manitowoc Ice automatically start ice making again. Machine Sanitizer to the water trough.

  • Page 31: Removal Of Parts For Cleaning/Sanitizing

    Maintenance Section 4 Removal of Parts for Cleaning/Sanitizing 1. Turn off the water supply to the ice machine at 4. Use a soft-bristle brush or sponge (NOT a wire the water service valve. brush) to carefully clean the parts. WARNING CAUTION Disconnect electric power to the ice machine at the Do not mix Cleaner and Sanitizer solutions...
  • Page 32 Section 4 Maintenance Water Dump Valve Important The water dump valve normally does not require The plunger and the inside of the enclosing tube removal for cleaning. must be completely dry before assembly. To determine if removal is necessary: NOTE: During cleaning, do not stretch, damage or 1.
  • Page 33 Maintenance Section 4 Ice Thickness Probe Water Pump 1. Compress the side of the ice thickness probe near WARNING the top hinge pin and remove it from the bracket. Disconnect the electric power to the ice machine at the electric service switch box and turn off the COMPRESS HINGE PIN TO water supply.
  • Page 34 Section 4 Maintenance Water Level Probe 1. Loosen the screw that holds the water level probe Follow the procedure below to remove the water inlet in place. The probe can easily be cleaned at this valve. point without proceeding to step 2. WARNING Disconnect the electric power to the ice machine at WARNING...
  • Page 35 Maintenance Section 4 Water Distribution Tube Water Curtain 1. Disconnect the water hose from the distribution 1. Gently flex the curtain in the center and remove it tube. from the right side. 1. LIFT UP 2. SLIDE BACK 3. SLIDE TO RIGHT THUMBSCREW DISTRIBUTION TUBE...

  • Page 36: Water Treatment/Filtration

    5. Remove the O-ring from the housing groove. odor. Consult your local distributor for information  Wipe the housing groove and the O-ring clean. on Manitowoc’s full line of NSF -certified  6. Lubricate the O-ring with petroleum jelly. Tri-Liminator filtration systems.

  • Page 37: Removal From Service/Winterization

    Maintenance Section 4 Removal from Service/Winterization GENERAL AUCS® ACCESSORY Special precautions must be taken if the ice machine Refer to the AUCS® Accessory manual for is to be removed from service for an extended winterization of the AUCS® Accessory. period of time or exposed to ambient temperatures of 32°F (0°C) or below.

  • Page 38: Section 5 - Before Calling For Service

    Section 5 Before Calling for Service Section 5 Before Calling for Service Checklist If a problem arises during operation of your ice machine, follow the checklist below before calling for service. Routine adjustments and maintenance procedures are not covered by the warranty. Problem Possible Cause To Correct...

  • Page 39: Safety Limit Stand-By Mode

    Safety Limit Feature In addition to the standard safety controls, your Before calling for service, re-start the ice machine Manitowoc ice machine features built-in safety using the following procedure: limits, which will stop the ice machine if conditions 1. Move the ICE/OFF/CLEAN switch to OFF and arise which, could cause a major component failure.

  • Page 40: Section 6 - Service

    Section 6 Service Section 6 Electrical System P MODEL POINT OF USE Ice Making Sequence of operation Chart Control Board Relays Contactor SEQUENCE LENGTH WATER WATER CONTACTOR WATER SUCTION LINE EVAPORATOR OPERATION PUMP FILL COIL DUMP SOLENOID HEATERS TIME VALVE VALVE INITIAL START-UP/ START UP AFTER...

  • Page 41: Main Fuse

    Service Section 6 Component Specifications and Diagnostics MAIN FUSE BIN SWITCH Function Function The control board fuse stops ice machine operation Bin switch operation is controlled by movement of if electrical components fail causing high amp draw. the water curtain. The bin switch has two main functions: Specifications 1.
  • Page 42 Section 6 Service Bin Switch Check Procedure Water Curtain Removal Notes 1. Set the toggle switch to OFF. The water curtain must be on (bin switch closed) 2. Watch the bin switch light on the control to start ice making. While a freeze cycle is in board.

  • Page 43: Toggle Switch

    Service Section 6 ICE/OFF/CLEAN TOGGLE SWITCH HARVEST HEATER ELEMENT Function Function This switch is used to place the ice machine in Warms the evaporator in the harvest cycle, ICE, OFF or CLEAN mode of operation. allowing the ice to release. Specifications Specifications Double-pole, double-throw switch.

  • Page 44: Harvest Heater Element Thermostat

    Section 6 Service HARVEST HEATER ELEMENT LOW PRESSURE CUT-OUT CONTROL THERMOSTAT Function Function Energizes and de-energizes the compressor Safety control which de-energizes the harvest contactor coil. heater contactor coil, when the evaporator The LPC opens when the suction pressure reaches temperature exceeds the control setpoint.

  • Page 45: Suction Solenoid Valve

    Service Section 6 SUCTION SOLENOID VALVE LINE SET ISOLATION VALVES FUNCTION FUNCTION Allows refrigerant flow through the evaporator Isolates ice machine evaporator from refrigeration during the freeze cycle, and prevents refrigerant system. flow through the evaporator in the harvest and Allows discharge and suction pressure readings to auto shut-off cycles.

  • Page 46: Evaporator Removal

    Section 6 Service EVAPORATOR REMOVAL P-530 P-520 1. Disconnect power to the ice machine at the 1. Disconnect power to the ice machine at the service disconnect or breaker. service disconnect or breaker. 2. Remove front, back, side and top panels. 2.

  • Page 47: Control Board

    Service Section 6 ELECTRONIC CONTROL BOARD AC LINE VOLTAGE ELECTRICAL PLUG (NUMBERS MARKED ON CLEAN LIGHT WIRES) YELLOW PRIMARY POWER SUPPLY WATER LEVEL PROBE LIGHT N 115V GREEN 208-230V MAIN FUSE (7A) BIN SWITCH LIGHT GREEN AUTOMATIC CLEANING SYSTEM (AuCS) ACCESSORY PLUG HARVEST LIGHT/ SAFETY LIMIT...

  • Page 48: Safety Limits

    Eliminate all electrical components and external causes first. If it appears that the refrigeration system is causing the problem, use Manitowoc’s Refrigeration System Operational Analysis Table, along with detailed charts, checklists, and other references to determine the cause.
  • Page 49 High inlet air temperature (110°F/43.3°C max.) Restricted condenser air flow • Dirty condenser fins • Defective fan motor Refrigeration system • Non-Manitowoc components • Improper refrigerant charge • Defective head pressure control • Defective compressor • TXV starving or flooding (check bulb mounting) •...
  • Page 50 Section 6 Service Safety Limit Notes • Because there are many possible external Safety Limit Stand-By Mode: The first time a safety limit shut down occurs, the problems, do not limit your diagnosis to only ice machine turns off for 60 minutes (Stand-by the items listed in this chart.

  • Page 51: Ice Thickness Probe (Harvest Initiation)

    Ice Thickness Probe (Harvest Initiation) HOW THE PROBE WORKS To allow the service technician to initiate a harvest Manitowoc’s electronic sensing circuit does not cycle without delay, this feature is not used on the rely on refrigerant pressure, evaporator first cycle after moving the toggle switch OFF and temperature, water levels or timers to produce back to ICE.

  • Page 52: Diagnosing Ice Thickness Control Circuitry

    Section 6 Service DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY Ice Machine Does Not Cycle Into Harvest When Water Contacts The Ice Thickness Control Probe Step 1 Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to ICE.
  • Page 53 Service Section 6 Ice Machine Cycles Into Harvest Before Water Contact With The Ice Thickness Probe Step 1 Disconnect the ice thickness probe from the control board at terminal 1C. Step 2 Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to ICE.

  • Page 54: Water Level Control Circuitry

    WATER LEVEL PROBE LIGHT FREEZE CYCLE CIRCUITRY The water level probe circuit can be monitored by Manitowoc’s electronic sensing circuit does not watching the water level light. The water level rely on float switches or timers to maintain light is on when water contacts the probe, and off consistent water level control.

  • Page 55: Water Trough Overfilling During The Freeze Cycle

    Service Section 6 DIAGNOSING FREEZE CYCLE POTABLE WATER LEVEL CONTROL CIRCUITRY Problem: Water Trough Overfilling During The Freeze Cycle Step 1 Start a new freeze sequence by moving the ICE/OFF/CLEAN toggle switch to OFF, then back to ICE. Important This restart must be done prior to performing diagnostic procedures. This assures the ice machine is not in a freeze cycle water inlet valve safety shut-off mode.
  • Page 56 Section 6 Service Problem: Water Trough Overfilling During The Freeze Cycle (continued) Step 3 Allow ice machine to run. Disconnect the water level probe from control board terminal 1F, and connect a jumper wire from terminal 1F to any cabinet ground. Remember if you are past 6 minutes from starting, the ice machine will go into a freeze cycle water inlet valve safety shut-off mode, and you will be unable to complete this test.

  • Page 57: Water Will Not Run Into The Sump Trough During The Freeze Cycle

    Service Section 6 Problem: Water Will Not Run Into The Sump Trough During The Freeze Cycle Step 1 Verify water is supplied to the ice machine, and then start a new freeze sequence by moving the ICE/OFF/CLEAN toggle switch to OFF then back to ICE. Important This restart must be done prior to performing diagnostic procedures.

  • Page 58: Wiring Diagram

    Section 6 Service Wiring Diagram P520/P530 Ice Machines Point of Use See serial plate for voltage Caution: Disconnect power before working on electrical circuitry. L2 (N) Drawing shown during freeze cycle AUTO RESET CONTACTOR 125F C.O. COIL 110F C.I. (61) (36) (74) (37)

  • Page 59: P520/P530

    Service Section 6 P520/P530 Tubing Diagram Typical Installation LIQUID LINE DRIER EVAPORATOR LINE SET ISOLATION VALVES LIQUID LINE DRIER EXPANSION VALVE EVAPORATOR LINE SET ISOLATION VALVES LIQUID LINE DRIER EXPANSION VALVE EVAPORATOR LINE SET ISOLATION VALVES SUCTION LINE MANIFOLD COMPRESSOR EXPANSION VALVE ACCUMULATOR CONDENSER...
  • Page 60 Section 6 Service 24 Hour Production Charts P520/P530 ICE MACHINES Ice machine freeze and harvest times will vary depending on the number of ice machines operating, and which stage of a cycle each machine is in. With an ambient temperature of 90°F and water temperature of 50°F, freeze times will range from 8 minutes* with one ice machine operating, to 22 minutes* with 4 ice machines operating.
  • Page 61 Service Section 6 P520/P530 ICE MACHINES Individual Ice Capacity (Lb./24 Hour) @ 90F Ambient/70F Water 4 - P500 On 3 - P500 On 2 - P500 On 1 - P500 On Condensing Unit Ambient (F) Total Ice Capacity (Lb./24 Hour) @ 90F Ambient/70F Water 2000 1752...
  • Page 62 Section 6 Service P520/P530 ICE MACHINES Individual Ice Capacity (Lb./24 Hour) @ 90F Ambient/90F Water 4 - P500 On 3 - P500 On 2 - P500 On 1 - P500 On Condensing Unit Ambient (F) Total Ice Capacity (Lb./24 Hour) @ 90F Ambient/90F Water 2000 1800...

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