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Vogt HEC-10 Service Manual

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HEC SERVICE MANUAL

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Summary of Contents for Vogt HEC-10

  • Page 1 HEC SERVICE MANUAL...

  • Page 2: Table Of Contents

    HEC-Series Service Manual TABLE OF CONTENTS Table Of Contents Models HEC-10, HEC-20, HEC-30 & HEC-40 Page No. 1. INTRODUCTION A Brief History of Our Company ........................ 1-1 ® Vogt Energy-Saving Tube-Ice Machines....................1-1 Preview ..............................1-1 Important Safety Notice..........................1-2 Special precautions to be observed when charging refrigeration systems ...........
  • Page 3 HEC-Series Service Manual TABLE OF CONTENTS Page No. Condenser Field Piping, FIGURE 3-7......................3-11 Equivalent Feet of Fittings Due to Friction, TABLE 3-4 ................3-12 Minimum Traps For Discharge Lines, FIGURE 3-8 ................... 3-12 Condenser Piping, FIGURE 3-9 ........................3-13 Wiring For DD-41 &...
  • Page 4 HEC-Series Service Manual TABLE OF CONTENTS Page No. PLC Features & Functions........................... 6-5 PLC Control Sequence Flow Chart, FIGURE 6-3................6-6 PLC Mode Identification & Operation ....................6-7 PLC Start-Up Mode..........................6-7 PLC Stand-By Mode ..........................6-8 PLC Freeze Mode..........................6-8 PLC Harvest Mode..........................
  • Page 5 HEC-Series Service Manual TABLE OF CONTENTS Page No. Lubrication ..............................7-6 Compressor............................7-6 Cutter Gear Reducer ..........................7-6 Preventative Maintenance..........................7-7 Daily Checklist ............................. 7-7 Note To Manager or Owner ......................... 7-7 Preventive Maintenance Program......................7-8 8. TROUBLESHOOTING (A Checklist) Machine Won’...
  • Page 6 HEC-Series Service Manual TABLE OF CONTENTS Ice Selector Switch, FIGURE 9-7........................ 9-8 Ice Selector Switch ............................9-8 Control Circuit Protection ........................... 9-9 Circulating Water Pump Motor ........................9-9 Condenser Cleaning............................. 9-9 Air-Cooled Condenser ..........................9-10 Cutter Gear Reducer ............................ 9-10 Cutter Bearing .............................
  • Page 7 HEC-Series Service Manual TABLE OF CONTENTS Page No. 11. TABLES AND CHARTS Ice Capacity TABLE 11-1 ........................... 11-1 Normal Operating Vitals, TABLE 11-2 ...................... 11-2 Temperature-Pressure Chart, TABLE 11-3 ....................11-3 English-Metric Conversion, TABLE 11-4....................11-4 12. TECHNICAL SERVICE BULLETINS ....................12-1 13.

  • Page 8: Introduction

    Henry Vogt Machine Co. A Brief History Of Our Company. Henry Vogt Machine Co. was founded as a small machine shop in Louisville, Kentucky in 1880. Today, Vogt Tube Ice, LLC is one of the world’s leading producers of ice-making equipment.

  • Page 9: Important Safety Notice

    HEC-Series Service Manual INTRODUCTION Important Safety Notice. This information is intended for use by individuals possessing adequate backgrounds of electrical, refrigeration and mechanical experience. Any attempt to repair major equipment may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

  • Page 10: Safety Symbols & What They Mean

    HEC-Series Service Manual INTRODUCTION Safety Symbols & What They Mean. Prior to installation or operation of the Tube-Ice ® machine, please read this manual. Are you familiar with the installation, start-up, and operation of a Tube-Ice ® machine? Before you operate, adjust or service this machine, you should read this manual, understand the operation of this machine, and be aware of possible dangers.

  • Page 11: Tube-Ice ® Machine, Figure 1-1

    The bin and drain pan are optional equipment NOTICE! The ice storage bin is shown for illustration purposes only. Vogt Tube Ice, LLC accepts no responsibility for the selection or use of any ice bin in conjunction with the Tube-Ice machine.
  • Page 12 HEC-Series Service Manual INTRODUCTION FIGURE 1-2A Assembly Model HEC-30 Air-Cooled Front View 10/24/01...
  • Page 13 HEC-Series Service Manual INTRODUCTION FIGURE 1-2B Assembly Model HEC-30 Air-Cooled Rear View 10/24/01...
  • Page 14 HEC-Series Service Manual INTRODUCTION FIGURE 1-2C Assembly Model HEC-30 Water Cooled Front View 10/24/01...
  • Page 15 HEC-Series Service Manual INTRODUCTION FIGURE 1-3B Assembly Model HEC-30 Water Cooled Rear View 10/24/01...

  • Page 16: Piping Nomenclature

    HEC-Series Service Manual INTRODUCTION PIPING SCHEMATIC NOMENCLATURE Freezer Compressor 4PS. High/Low Safety Pressure Switch 30. Gage Glass 5M. Cutter Motor 32. AC Condenser Service Connection 5R. Cutter Gear Reducer 34. Compressor Suction Service Valve Water Pump 35. Comp. Discharge Service Valve Water Tank (reservoir) 39.

  • Page 17: Receipt Of Your Tube-Ice Machine

    Immediately make a separate written request for inspection by the freight line’ s agent. Any repair work or alteration to the machine without the permission of the Henry Vogt Machine Co. can void the machine’ s warranty. The machine was shipped with a full charge of HCFC-22 stored in the receiver. Visually check all lines for mechanical damage.

  • Page 18: Installing Your Tube-Ice Machine

    HEC-Series Service Manual INSTALLING YOUR TUBE-ICE MACHINE 3. Installing Your Tube-Ice Machine Note: A video production is available through your distributor. Installation Without Bin. Machine must be installed on a drainable condensate drip pan. Bin Installation. Set the bin on solid, level footing. Inside the bin you will find the four legs. Screw these legs to the bottom of the bin.

  • Page 19: Forklift-&-Blocks Method, Figure 3-1

    HEC-Series Service Manual INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-1 Forklift-&-Blocks Method You need: forklift truck with adequate load and height capacities (8) 2X4 wood blocks 8 in. long (2) wooden 2X4’s measuring 3-ft. long pry bar Step 1. Position Tube-Ice ®...

  • Page 20: Forklift-&-Rope Or Lifting Straps Method, Figure 3-2

    HEC-Series Service Manual INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-2 Forklift-&-Rope or Lifting Straps Method You need: extra head room forklift with adequate load and height capacities 1/2” rope or four lifting straps to bind forks to top angles Step 1. Remove front, rear, and top access panels.

  • Page 21: Wiring And Electrical Connection

    HEC-Series Service Manual INSTALLING YOUR TUBE-ICE MACHINE Wiring And Electrical Connection. WARNING Only service personnel experienced in refrigeration and qualified to work with high voltage electrical equipment should be allowed ® to install or work on the Tube-Ice machine. WARNING FIGURE 3-3 Electrical Connections for Machine Power &...

  • Page 22: Piping And Drain Connections

    Exterior shut-off valves must be provided in the water inlet lines. The minimum inlet water pressure for satisfactory operation of the machine is 30 psig. The maximum allowable pressure is 100 psig. CAUTION Model HEC-10 HEC-20 HEC-30 HEC-40 Make Up Water In 3/8” FPT 3/8”...

  • Page 25: Air-Cooled Condenser Installation

    INSTALLING YOUR TUBE-ICE MACHINE Air-Cooled Condenser Installation Instructions. WARNING Using a non-Vogt condenser will void the compressor warranty. WARNING Certain installation guidelines must be followed to obtain reliable operation from air-cooled ice machines. If these guidelines are not followed, the compressor warranty will not be honored. Any exceptions to this policy must be obtained in writing prior to installation and operation of the ice machine.
  • Page 26 TABLE 3-3. Only the condensers shown are UL listed with the ice machines. Other condensers may be individually UL listed, but are not UL listed with the Tube-Ice ® machines, and cannot be recommended by the Henry Vogt Machine Co. 10/21/01...

  • Page 27: Air-Cooled Condenser Data, Table 3-3

    Catalog energy efficiency ratings of the ice machines are based on use of the recommended condenser. Condensers supplied by Vogt must be utilized. The use of non-Vogt condensers will void the compressor warranty. For continuous operation at ambients above 105°F, consult the factory about using a larger condenser.
  • Page 28 HEC-Series Service Manual 3-11 INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-6 Condenser Dimensions (Condenser pictured: DD-101 or DD-131) Note: Dash lines indicate customer supplied piping. The Check Valve in the return line (labeled “Output To Machine”) is supplied with the condenser. FIGURE 3-7 Condenser Field Piping 10/21/01...

  • Page 29: Minimum Traps For Discharge Lines, Figure 3-8

    HEC-Series Service Manual 3-12 INSTALLING YOUR TUBE-ICE MACHINE CONDENSER EQUIVALENT LINE SIZE WORKSHEET Discharge Gas Line O.D. _____________ Fitting Type Number Used Factor Total Globe Valve (open) Angle Valve (open) 45° Elbow 90° Elbow Feet of Straight Copper Used Total Fitting Factor Total Equivalent Feet Fitting Factors Copper Tube O.D.
  • Page 30 HEC-Series Service Manual 3-13 INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-9 Condenser Piping With Cold Weather Valve Kit 10/21/01...
  • Page 31 HEC-Series Service Manual 3-14 INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-10 Wiring For DD-61 With Cold Weather Valve and Single Fan FIGURE 3-11 Wiring For DD-101 & DD-131 With Cold Weather Valve And Dual Fans 10/21/01...

  • Page 32: Air-Cooled Condenser Enclosure, Figure 3-12

    HEC-Series Service Manual 3-15 INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-12 Air-Cooled Condenser Enclosure 10/21/01...

  • Page 33: Field Attachment Air-Cooled Condenser Refrigerant Tubing, Figure 3-13

    HEC-Series Service Manual 3-16 INSTALLING YOUR TUBE-ICE MACHINE FIGURE 3-13 Field Attachment, Air Cooled Condenser Refrigerant Tubing 10/21/01...

  • Page 34: Ice Bin Thermostat Bulb Installation

    HEC-Series Service Manual 3-17 INSTALLING YOUR TUBE-ICE MACHINE Ice Bin Thermostat Bulb Installation. Each machine is equipped with an ice bin thermostat. To assure proper protection for the machine, the control bulb of the ice bin thermostat must be located so that ice will contact it when the bin is full.
  • Page 35 HEC-Series Service Manual 3-18 INSTALLING YOUR TUBE-ICE MACHINE The control panel is electrically connected so that the bin thermostat will stop the machine only upon the completion of a harvest period. When both cylinder and crushed ice are produced and separately stored in a divided bin, the control bulb of thermostat BT1 is placed in the crushed ice section of the storage bin (left side) and the control bulb of thermostat BT2 is placed in the cylinder ice section (right side of bin).

  • Page 36: Installation Review: A Checklist

    HEC-Series Service Manual 3-19 INSTALLING YOUR TUBE-ICE MACHINE Installation Review: A CHECKLIST Make a visual check to be sure these steps have been taken BEFORE continuing. CHECK: _____ PRIOR TO OPENING VALVES, check all joints for leaks which may have developed during shipment.

  • Page 37: How Your Tube-Ice Machine Works

    HEC-Series Service Manual HOW YOUR TUBE-ICE MACHINE WORKS 4. How Your Tube-Ice Machine Works Principle Of Operation. The manual operation of the machine is controlled by the “Ice” and “Start” switches located in the switch box of the freezing unit. The automatic operation is controlled by the PLC and ice bin thermostats which will automatically stop and start the freezing unit by the level of the ice in the storage bin (NOTE: See “Ice Bin Thermostat Bulb Installation”...
  • Page 38 HEC-Series Service Manual HOW YOUR TUBE-ICE MACHINE WORKS HEC, Water Cooled -- Piping Schematic FIGURE 4-1 HEC, Air Cooled -- Piping Schematic 10/21/01...

  • Page 39: Dual Ice

    HEC-Series Service Manual HOW YOUR TUBE-ICE MACHINE WORKS Dual ice type (crushed and cylinder). Divider in bin (cylinder and crushed ice separately stored). With the selector switch on “Auto”, the machine will automatically produce cylinder ice until the cylinder-ice bin is filled. This action will open the cylinder ice thermostat switch in the cylinder ice bin and will automatically change the machine over to crushed ice production--PROVIDED THE CRUSHED ICE BIN IS NOT FULL.

  • Page 40: Single Ice

    HEC-Series Service Manual HOW YOUR TUBE-ICE MACHINE WORKS When ice bin thermostats are NOT used. With the selector switch set on either “Auto” or “Cyl”, the machine will produce cylinder ice. If the switch is changed to “Cru” while the unit is producing cylinder ice, after the first 5 minutes of a cycle, it will complete the freeze and evacuation of the cylinder ice before changing to the production of crushed ice.

  • Page 41: Ice Bin Capacity

    HEC-Series Service Manual HOW YOUR TUBE-ICE MACHINE WORKS Ice Bin Capacity. Crushed or cylinder ice weighs approximately 35 pounds per cubic ft. (35 lb/ft As ice drops into a bin, it will pile up and slope naturally at about a 45° angle. This natural slope should be taken into account when locating the bin thermostat bulb (or other bin level control) and when calculating the normal bin capacity.

  • Page 42: Initial Start-Up And Operation

    HEC-Series Service Manual INITIAL START UP AND OPERATION 5. Initial Start-Up & Operation Start-Up Checklist Be sure to complete and return the Warranty Registration/Start-Up report located at the front of the manual. In order to prepare the machine for start-up, it will be necessary to remove the front panels for access to the various valves and for observation.
  • Page 43 HEC-Series Service Manual INITIAL START-UP AND OPERATION If the machine does not start, put the “Ice” button in the “Off” position. Put the “Clean” button in the “On” position and push the “Start” button. This will put the machine in the clean mode and tell the PLC that the machine is pumped down.

  • Page 44: Refrigerant Charge

    HEC-Series Service Manual INITIAL START UP AND OPERATION Refrigerant Charge. Check the refrigerant level after the machine has operated for a few cycles. It should be slightly above the operating level, as indicated on the receiver, a few minutes prior to start of a thawing period.

  • Page 47: Electrical Controls & Their Functions

    HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS 6. Electrical Controls & Their Functions Control Panel Parts *BT1 12A 2117G02000000-Bin Thermostat (Crushed) *FPS1 12A 2117E04000000-Freezer Pressure Switch (Crushed) 12A 2117G02000000-Bin Thermostat (Cylinder) 12A 2117E04000000-Freezer Pressure Switch (Cylinder) FPS2 12A 7516E13000000-Compressor Contractor 12A 7516E09000000-Pump Contactor 12A 7518E2000000 - Auxiliary Contact 12A 7516E09000000 - Cutter Contactor...

  • Page 48: Description Of Control Panel Parts

    The machine will stop by long freeze cycle “fault” after repeated overload trips. HEC-10 and HEC-20 have built in motor overload protection with automatic reset. *Note: Components used in dual ice type machines only.
  • Page 49 HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS Switch Box Parts FU100 12A 7504E10000000 Fuse 2.5 amp 12A 7504E10000000 Fuse 2.5 amp FU200 PBL1 12A 7500E36000000 Clean Lighted Push Switch 12A 7500E36000000 On/Off Lighted Push Switch PBL2 12A 7500E03000000 Start Push Button 12A 7500E02000000 Manual Harvest Push Switch 12A 7500E07000000...
  • Page 50 HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS FU100 and FU200, 2.5 Amp Fuses. Overload and short circuit protection for crankcase heater and the control circuit. PB1, Start Push Button. For starting the machine in the ice making mode. (Momentary contact). Will also bypass the built in 120 minute start-up mode.

  • Page 51: Plc Features & Functions

    HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS PLC Features & Functions (Condensed Description) The PLC provides many beneficial features as follows: 1. Identifies machines faults and stores the identity of the last fault. 2. Automated total pump down prior to a clean mode. 3.
  • Page 52 HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS FIGURE 6-3 Control Sequence Flow Chart 10/21/01...
  • Page 53 HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS “PLC” (Programmable Logic Controller) Sequence Of Controller & Machine Operation ® Explanation. The HEC-Series Tube-Ice machine is controlled by a PLC (Programmable Logic Controller). The PLC controls the sequence of events and monitors the ice machine functions. The ®...
  • Page 54 HEC-Series Service Manual ELECTRICAL CONTROLS & THEIR FUNCTIONS Standby Mode. The standby mode is a decision making mode. It monitors the position of all the various switches in the control circuitry and at the proper time decides which mode to advance to next.
  • Page 55 When partial pumpdown is initiated, the “A” (liquid feed) solenoid valve is closed and the water pump and compressor run for a set time. After this set time the compressor stops and the machine is in the standby mode. Model HEC-10 HEC-20 HEC-30 HEC-40...
  • Page 56 HEC-Series Service Manual 6-10 ELECTRICAL CONTROLS & THEIR FUNCTIONS 1. Set the “Ice Selector” switch to the position desired. 2. See that the “Clean” switch is in the “Off” position. 3. Push the “Ice” button to the “On” position. 4. Push the “Start” button. (Make sure the compressor crankcase is warm and there is no liquid refrigerant in with the oil before pushing the “Start”...
  • Page 57 High or low pressure cutout during total pumpdown ll¬¬¬l Short Cycle Fault: Three Harvests Within A Specified Time As Noted: HEC-10 --- 10 Minutes HEC-20 --- 10 Minutes HEC-30 --- 5 Minutes HEC-40 --- 5 Minutes ll¬¬¬¬ Long Freeze Cycle Fault:...
  • Page 58 HEC-Series Service Manual 6-12 ELECTRICAL CONTROLS & THEIR FUNCTIONS NOTE: Part #12A-7536M01000000. PLC must be pre-programmed for specific model. FIGURE 6-4 PLC Display Input Description Output Description Cylinder Ice Bin Stat / Selector Switch Flush Valve (Special Order Only) Crushed Ice Bin Stat / Selector Switch A-valve Freezer Pressure Switch / Manual Harvest Compressor (X-valve / air cooled machine)
  • Page 59 HEC-Series Service Manual 6-13 ELECTRICAL CONTROLS & THEIR FUNCTIONS S10 - Start S11 - Standby ¢ ¢ ¢ ¢ ¢ l l l ¢ ¢ ¢ ¢ ¢ l l l Out 0 1 Out 0 1 ¢ ¢ ¢ ¢ ¢ ¢ ¢...
  • Page 60 HEC-Series Service Manual 6-14 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-6 Dual Ice Type--Machine Off 10/21/01...
  • Page 61 HEC-Series Service Manual 6-15 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-6A Single Ice Type--Machine Off 10/21/01...
  • Page 62 HEC-Series Service Manual 6-16 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-7 Dual Ice Type--Freeze Cycle (Cylinder Ice) 10/21/01...
  • Page 63 HEC-Series Service Manual 6-17 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-7A Single Ice Type--Freeze Cycle 10/21/01...
  • Page 64 HEC-Series Service Manual 6-18 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-8 Dual Ice Type--Harvest Cycle (Cylinder Ice) 10/21/01...
  • Page 65 HEC-Series Service Manual 6-19 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-8A Single Ice Type--Harvest Cycle 10/21/01...
  • Page 66 HEC-Series Service Manual 6-20 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-9 Dual Ice Type--Clean Cycle (A Maintenance Operation) 10/21/01...
  • Page 67 HEC-Series Service Manual 6-21 ELECTRICAL CONTROLS & THEIR FUNCTIONS Use Copper Conductors Only. Protected against primary single phase failure. FIGURE 6-9A Single Ice Type--Clean Cycle 10/21/01...

  • Page 68: Maintenance

    HEC-Series Service Manual MAINTENANCE 7. Maintenance ® Ice-making Section. The ice-making section of the Tube-Ice machine should be cleaned at least twice a year (more often if water conditions cause mineral build-up) using an approved food-grade ice machine cleaner. The water pump is used to circulate the cleaner through the system by setting the “Clean”...

  • Page 69: Water Distributors

    HEC-Series Service Manual MAINTENANCE 12. Make sure the water tank drain valve is closed, the adjustable blowdown petcock is adjusted properly, the adjustable blowdown tubing is inserted into the drain bypass line, the “Clean” button is in the “Off” position, and the selector switch is in the desired ice making position. 13.

  • Page 70: Draining

    HEC-Series Service Manual MAINTENANCE Proper operation of cooling towers will increase the interval between cleaning considerably. The tower overflow rate should be checked frequently. If a tower is operated with insufficient overflow, nominal 1-1/2 to 3 GPH bleed depending on water quality, the resulting mineral concentration in the water can cause rapid and heavy flooding inside the condenser tubes, requiring excessively frequent cleaning.

  • Page 71: Chemical Cleaning

    HEC-Series Service Manual MAINTENANCE Chemical Cleaning. The Henry Vogt Machine Co. makes no recommendation for any particular chemical preparation. The same chemical may not be effective for all situations. CAUTION The following directions and precautions should be observed when cleaning is undertaken. The warranty on condensers is void if they are damaged by improper cleaning tools or methods.

  • Page 72: Air-Cooled Condenser Cleaning

    ® A cleaning tool is available from Vogt through your distributor. Ask for Part #12A-2055B01. When using a cleaning tool, keep the inside of the tube wet and move the tool slowly from one end to the other while rotating it at a moderate speed.

  • Page 73: Lubrication

    Air should be purged from the oil pump discharge line by forcing some oil through the line before tightening the charging connection. For HEC-10, HEC-20 (with Copeland scroll), HEC-30, and HEC-40 use “Dual Inhibited Sunisco 3GS” (Viscosity 150) or equal. Do not use a synthetic substitute.

  • Page 74: Preventative Maintenance

    HEC-Series Service Manual MAINTENANCE Preventive Maintenance For The Manager Who Depends Upon This Machine For Efficient Operation. “Preventive Maintenance” simply means that you or a delegated employee makes a daily visual check ® of your Tube-Ice machine. Here is what to look for and why: Daily checklist: 1.

  • Page 75: Preventive Maintenance Program

    HEC-Series Service Manual MAINTENANCE Preventive Maintenance Program Model # ___________________ Serial # ____________________ Date _____________ Customer/Address ___________________________________________________________ ___________________________________________________________ Mgr. Name ______________________ Service Tech Name __________________________ The following service performed and checked: Last maintenance performed (approx. date) ___/___/___ Scale condition of water tank & tubes (good - fair - poor) All drains freely draining (water tank, drip pan, ice bin) Water distributors cleaned Ice machine cleaner circulated through system...

  • Page 76: Troubleshooting (A Checklist)

    HEC-Series Service Manual TROUBLESHOOTING 8. Troubleshooting Always check the machine thoroughly after remedying the problem to prevent the same cause from reoccurring. Symptom: Machine won’t run. (See Fault Identity, Section 6, TABLE 6-2) Possible Cause Possible Remedy Intermittent power interruptions or power If there is a power failure or a power failure.

  • Page 77: Freeze-Up Due To Extended Freezing Period

    HEC-Series Service Manual TROUBLESHOOTING Symptom: Freeze up due to extended freezing period. Check for Fault #15, Long Freeze Cycle (see note below) Possible Cause Possible Remedy Freezer pressure switch setting too low. See Freezer Pressure Switches, Section 9 FIGURE 9-1, and Operating Vitals, Section 11, TABLE 11-2.

  • Page 78: Freeze-Up Due To Ice Failing To Discharge

    HEC-Series Service Manual TROUBLESHOOTING Symptom: Freeze-up due to ice failing to discharge. Check for Fault #14 Short Cycle (see note below) Possible Cause Possible Remedy Low condensing pressure during freezing See Head Pressure, Section 9. resulting in insufficient heat for thawing. Thawing timer setting too short to allow ice to Check PLC thaw timer setting.

  • Page 79: Low Ice Capacity

    HEC-Series Service Manual TROUBLESHOOTING Symptom: Low ice capacity. Possible Cause Possible Remedy Low refrigerant charge in freezer. Add refrigerant and check for leaks. Restriction in liquid line. Check for obstruction at filter drier (46), strainer (43), solenoid valve (20) or TXV (17). The liquid line will normally have frost on the downstream side of a severe restriction.

  • Page 80: Safety Pressure Switches Stop Machine

    HEC-Series Service Manual TROUBLESHOOTING Symptom: Safety pressure switches stop machine. Possible Cause Possible Remedy Low pressure switch opens. Compressor suction service valve (34) may be either closed or partially closed. Open valve wide. Check switch for improper setting (too high opening pressure). See Section 9, FIGURE 9-2.

  • Page 81: Motor Overload Protectors Stop Machine

    HEC-10 and HEC-20 have built-in motor See motor overload and internal temperature overload and thermal protection with automatic thermal switch above for possible remedy.
  • Page 82 HEC-Series Service Manual TROUBLESHOOTING Symptom: Motor overload protectors stop machine. (Cont.) One of the 2.5 amp fuses in the switch box Check compressor crankcase heater, coil of fan stops machine. contactor and PLC for a ground. Repair or replace defective part. Replace fuse. Make sure the compressor crankcase heater is energized for at least two hours and there is no liquid refrigerant in the crankcase prior to running the...

  • Page 83: Service Operations

    HEC-Series Service Manual SERVICE OPERATIONS 9. Service Operations Adjustable Blowdown (for clearer ice). A petcock is installed on the overflow from water pump to provide means for obtaining blowdown from the water tank during the freezing period. This supplements the blowdown that is discharged during the thawing period through the bypass piping connected to the drain of the water tank.
  • Page 84 6. Adjust the valve only 1/4 turn at a time. Close (turn stem in) to raise superheat. Open (turn stem out) to lower superheat. Monitor at least two cycles after each adjustment before adjust further. Model Minimum Target Maximum HEC-10 HEC-20 HEC-30 HEC-40 TABLE 9-1 Recommended Superheat Range If the valve cannot be adjusted satisfactorily, check the bulb insulation as follows: 1.

  • Page 85: Freezer Pressure Switches

    HEC-Series Service Manual SERVICE OPERATIONS When installing a new valve, be sure to use the proper soldering techniques to prevent overheating the valve body which could damage the superheat spring and result in flood back problems. When soldering: 1. Wrap a wet cloth around the valve body and element. 2.

  • Page 86: Allen Bradley Switch

    HEC-Series Service Manual SERVICE OPERATIONS Allen Bradley Switch. The following procedure is recommended for initially setting an AB pressure switch which has not been previously adjusted: 1. Turn the bottom screw (differential) approximately 1/2 turn to the left (counter clockwise). The pointer arrow, which is at the top middle of the switch, will be at the “F”...

  • Page 87: Head Pressure

    HEC-Series Service Manual SERVICE OPERATIONS FIGURE 9-2 High-Low Pressure Switch NOTE: High-low pressure switch contains both high and low voltage circuits. Line numbers 22 and X6 supply a low voltage signal to the PLC. Line numbers 15 and 30 supply power to the compressor contactor coil.

  • Page 88: Water Cooled Units

    HEC-Series Service Manual SERVICE OPERATIONS FIGURE 9-3. Water Regulating Valve. FIGURE 9-4. Condenser Fan Switch. Water-Cooled Units. A water regulating valve (FIGURES 1-3B & 9-3) located in the condenser water inlet line is used to control the water flow through the condenser. This valve should be adjusted to maintain a head pressure of 190-210 psig.
  • Page 89 HEC-Series Service Manual SERVICE OPERATIONS FIGURE 9-5 Ice Bin Thermostat (Dual Ice Type) 1. Cover bulb with ice. Use a continuity tester to see if the contacts are open. It should take approximately 10-15 seconds for the contacts to open. 2.

  • Page 90: Thawing Timer

    HEC-Series Service Manual SERVICE OPERATIONS FIGURE 9-6 Thawing Timer. (Part of PLC) Thawing Timer. The thawing timer governs the ice thawing period. It is built into the PLC located inside the control panel. It is started by action of one of the freezer pressure switches (FPS1 or FPS2) or the manual harvest button.

  • Page 91: Control Circuit Protection

    HEC-Series Service Manual SERVICE OPERATIONS Control Circuit Protection. The electrical control circuit of the machine is protected by two 2.5 amp fuses (FU100 & FU200). If either of these fuses should blow, the machine will immediately stop. Before replacing a fuse, open the disconnect switch to machine and set the “Ice” push button to the “Off”...

  • Page 92: Air-Cooled Condenser

    HEC-Series Service Manual 9-10 SERVICE OPERATIONS Air-Cooled Condenser. Visual inspection will indicate if dirt is accumulating and clogging the fin face of the condenser. A vacuum cleaner, compressor air or a brush may be used to remove an accumulation of dirt from the fin section of the condenser. See Section 7. Cutter Gear Reducer.

  • Page 93: Cutter And Gear Drive

    HEC-Series Service Manual 9-11 SERVICE OPERATIONS Cutter and Gear Drive. To remove the ice cutter (21), when and if necessary, proceed as follows: Turn machine off. Close the stop valve in the make-up water line to water pan. Drain the tank, disconnect the make-up water line and drain line from the water tank. Separate motor from the cutter drive reducer by removing four cap screws.
  • Page 94 HEC-Series Service Manual 9-12 SERVICE OPERATIONS FIGURE 9-8 Cutter/Water Tank Assembly With Water Pump and Cutter Motor 10/21/01...
  • Page 95 HEC-Series Service Manual 9-13 SERVICE OPERATIONS FIGURE 9-9 Cutter/Water Tank Parts 10/21/01...
  • Page 96 HEC-Series Service Manual 9-14 SERVICE OPERATIONS FIGURE 9-10 Cutter Drive Parts 10/21/01...
  • Page 97 HEC-Series Service Manual 9-15 SERVICE OPERATIONS FIGURE 9-11 Cutter Parts 10/21/01...
  • Page 98 HEC-Series Service Manual 9-16 SERVICE OPERATIONS NOTE: Deflector door assembly and chute deflector may be removed if there is no divider in the bin, see “How Ice Is Stored”, Section 4. FIGURE 9-12 Ice Discharge Arrangement 10/21/01...

  • Page 99: Pumping Down Freezer

    HEC-Series Service Manual 9-17 SERVICE OPERATIONS Pumping Down Freezer. If it should become necessary to pump the refrigerant out of the freezer, sufficient vapor should be retained to hold one pound of pressure in the freezer so that air will not enter if the system is opened.

  • Page 100: Refrigerant Leaks

    HEC-Series Service Manual 9-18 SERVICE OPERATIONS Refrigerant Leaks. In addition to testing the machine for leaks as instructed under “Refrigerant Charge”, it is advisable to again make a leak test after the unit has been in operation approximately one week. Any noticeable change in operating conditions, other than shown on the “Certificate of Test”...

  • Page 101: Solenoid Valves

    HEC-Series Service Manual 9-19 SERVICE OPERATIONS Note: “X” Valve #53 (air-cooled units only) FIGURE 9-13 Solenoid Valves Solenoid Valves. The solenoid valves (#18, #20 and #53) are pilot-operated with “floating” type diaphragm. For satisfactory operation, be sure that the manual opening stem, which is located in the valve bonnet on the outlet side of the Jackes-Evans valve and on the bottom of the Sporlan valve, is in the “automatic”...
  • Page 102 HEC-Series Service Manual 9-20 SERVICE OPERATIONS WARNING Acid can cause serious burns or blindness. Always add the acid to the water for dilution. Wear eye and body protection. WARNING Water Tank. The production of opaque ice usually indicates that the water in the water tank contains a concentrated amount of solids or salts.
  • Page 103 If there is sufficient refrigerant in the receiver, a discharge pressure of 200 psig is maintained during the freeze and the system is free of noncondensables, ice will release and be cleared from the freezer within 1 1/2 minutes. Check several cycles after making adjustments. HEC-10 HEC-20 HEC-30...
  • Page 104 HEC-Series Service Manual 9-22 SERVICE OPERATIONS Cylinder Ice Crushed Ice (psig) (psig) Machine HEC-10S 42 - 44 45 - 47 HEC-10M 39 - 41 43 - 45 HEC-20S 43 - 45 46 - 48 HEC-20M 38 - 40 41 - 43 HEC-30S 38 - 40 41 - 43...

  • Page 105: Single To Dual Ice Conversion

    HEC-Series Service Manual 9-23 SERVICE OPERATIONS • The pressure switch should be adjusted until the desired ice thickness is obtained--See table below for recommended ice weights Cylinder Ice Crushed Ice (lbs.) (lbs.) Machine HEC-10S 39 - 41 29 - 31 HEC-10M 37 - 39 27 - 29...
  • Page 106 HEC-Series Service Manual 10-1 MODEL NUMBER STRUCTURE 10. Model Number Structure 10/21/01...
  • Page 107 HEC-Series Service Manual 11-1 TABLES AND CHARTS 11. Tables and Charts Capacity Table Pounds of Ice Per 24 Hours 90° ° F/32° ° C 80° ° F/26° ° C 70° ° F/21° ° C 60° ° F/15° ° C 50° ° F/10° ° C 40°...
  • Page 108 HEC-Series Service Manual 11-2 TABLES & CHARTS TEMPERATURE - PRESSURE CHART FOR COMMON REFRIGERANTS DegF R-12 R-22 R-502 R-134a MP-39 HP-62 HP-80 DegF R-12 R-22 R-502 R-134a MP-39 HP-62 HP-80 -7.6 -3.0 -9.0 -9.1 46.7 84.0 97.4 45.5 45.3 102.9 111.4 -7.2 -2.4...
  • Page 109 HEC-Series Service Manual 11-3 TABLES AND CHARTS All pressures are in lbs/in gage (psig). REFERENCE INFORMATION CONVERSION FACTORS: English to Metric To Convert From Multiply by Area 9.2903e-2 6.416 e-4 Energy Joule (J) 1054.48 BTU/Hr 2546.2 1.34 Length 0.3048 0.0254 Pressure lbf/ft Paschals...

  • Page 110: Technical Service Bulletins

    When cloudy or opaque is produced because of the water quality, it is suggested that the water be analyzed by a reputable laboratory and their advice be followed. Henry Vogt Machine Co. Louisville, KY 10/21/01...

  • Page 111: Index

    HEC-Series Service Manual 13-1 INDEX 13. Index Compressor, Warranty ------------------------------- 13-5 Accumulator ------------------------------------ 4-2,5-5,5-6 Condenser------------------------------------------ 1-8,3-12 Adapter Plate ------------------------------------ 9-13, 9-15 Condenser, Air-cooled Cleaning---------------------- 7-5 Adjustable blowdown------------------------------------ 9-1 Condenser, Air-cooled Heat Rejection ------------ 3-10 Automatic blowdown ------------------------------------ 9-1 Condenser Fan Contactor (FC)----------------------- 6-2 Air-cooled condenser data --------------------------- 3-10 Condenser Fan Switch --------------------------------- 9-6 Air-cooled condenser:...
  • Page 112 HEC-Series Service Manual 13-2 INDEX FIGURE 3-1 ---------------------------------------------- 3-2 FIGURE 3-2 ---------------------------------------------- 3-3 Gear Reducer-------------------------------------- 7-6,9-10 FIGURE 3-3 ---------------------------------------------- 3-4 FIGURE 3-4 ---------------------------------------------- 3-6 FIGURE 3-5 ---------------------------------------------- 3-7 Harvest Cycle, Wiring Schematics (Dual Ice) --- 6-18 FIGURE 3-6 -------------------------------------------- 3-11 Havest Cycle, Wiring Schematics (Single Ice) -- 6-19 FIGURE 3-7 -------------------------------------------- 3-11 Harvest Mode --------------------------------------------- 6-8...
  • Page 113 Pump Overload, (4LT) ---------------------------------- 6-4 Table 11-4 (Metric Conversion)--------------------- 11-4 Pump Overload, Switch (S2) -------------------------- 6-4 Technical Service Bulletin(Water Quality) ------- 13-1 Telephone Number, Vogt ------------------------------ 1-1 Temperature-Pressure Chart------------------------ 11-3 Test Mode ----------------------------------------------- 6-10 Thawing, Chamber -------------------------------------- 4-1 R-22 (HCFC-22) ----------------------------------------- 4-5...
  • Page 114 HEC-Series Service Manual 13-4 INDEX Vitals, Operation --------------------------------------- 12-2 Warranty (Basic Product)-----------------------Rear Pg. Warranty Registration--------------------------- Front Pg. Water cooled Machine, Installation ------------ 3-1, 3-6 Water Conditioning ------------------------------------ 12-1 Water Cooled Condenser ------------------------------ 7-2 Water Distributor----------------------------------7-2, 9-19 Water Pump ---------------------------------------------- 9-9 Water Regulation Valve -------------------------------- 9-6 Water Supply and Drains, Air-cooled ---------- 3-5,3-7 Water Supply and Drain, Water Cooled ------- 3-5,3-6...

This manual is also suitable for:

Hec-20Hec-30Hec-40

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