Hoshizaki KM-1300SAH-E Service Manual
  1. Manuals
  2. Brands
  3. Hoshizaki Manuals
  4. Ice Maker
  5. KM-1300SAH-E
  6. Service manual

Hoshizaki KM-1300SAH-E Service Manual

Stackable crescent cuber
Hide thumbs Also See for KM-1300SAH-E:
Table of Contents

Advertisement

Quick Links

See also: Instruction Manual , Installation Manual
STACKABLE CRESCENT CUBER
SERVICE MANUAL
FOR QUALIFIED SERVICE PERSON
NUMBER:
89/336
ISSUED: December 17, 2004
73/23
KM-1300SAH-E
HOSHIZAKI
73124

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the KM-1300SAH-E and is the answer not in the manual?

Questions and answers

Related Manuals for Hoshizaki KM-1300SAH-E

Summary of Contents for Hoshizaki KM-1300SAH-E

  • Page 1 STACKABLE CRESCENT CUBER SERVICE MANUAL FOR QUALIFIED SERVICE PERSON NUMBER: 89/336 ISSUED: December 17, 2004 73/23 KM-1300SAH-E HOSHIZAKI 73124...
  • Page 2 No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual. HOSHIZAKI provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker. Should the reader have any questions or concerns which have not been satisfactorily addressed, please call HOSHIZAKI CARE for assistance.

  • Page 3: Table Of Contents

    Only qualified service technicians should service and maintain the icemaker. This manual should be made available to the technician prior to service or maintenance. I. Specifications ... 5 KM-1300SAH-E (air-cooled) ... 5 II. General Information ... 6 A. Construction ... 6 KM-1300SAH-E ... 6 B.
  • Page 4 VI. Cleaning and Maintenance Instructions ... 42 A. Preparing the Icemaker for Long Storage ... 42 B. Cleaning and Sanitizing Procedures ... 44 1. Cleaning Procedure ... 44 2. Sanitizing Procedure - Following Cleaning Procedure ... 46 C. Maintenance ... 47...

  • Page 5: Specifications

    I. Specifications KM-1300SAH-E (air-cooled) AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks FOR THE EUROPEAN MARKET ICE CAPACITY lbs./day ( kg/day ) SHAPE OF ICE...

  • Page 6: General Information

    II. General Information A. Construction KM-1300SAH-E...

  • Page 7: Controller Board

    B. Controller Board 1. Solid-State Control a) A HOSHIZAKI exclusive solid-state control is employed in KM-1300S_H-E Series Stackable Crescent Cubers. b) A printed circuit board (hereafter called “controller board”) includes a stable and high quality control system. c) All models are pretested and factory-adjusted.
  • Page 8 c) High Temperature Safety — 53 ± 4°C The temperature of the suction line in the refrigerant circuit is limited by the high temperature safety. During the defrost cycle the evaporator temperature rises. The thermistor senses 9°C and starts the defrost timer. After the defrost timer counts down to zero, the normal freeze cycle begins.
  • Page 9 The green LEDs 1-4 represent the corresponding relays and energize and sequence 5 seconds from initial startup as follows: Sequence Step 1 Minute Fill Cycle 4 Harvest Cycle 1, 4, and 2 Freeze Cycle Reverse Pump Out 1, 3, and 2 {LED 1 –...
  • Page 10 The application switch located between relay X3 & X4 must be set to match the original board application. Place this switch in the ALP position if there is no white wire supplied to the K1 connector. If there is a white wire, place the switch in the C position. If this switch is placed in the wrong position either the compressor contactor will remain energized with the control switch OFF or the unit will not start.

  • Page 11: Sequence

    3. Sequence 1st Cycle 1. Unit energized and control switch to “ICE” position. Water supply cycle starts. 2. After 1 minute. Defrost cycle starts. 5. After the first 5 minutes in freeze cycle. Ready to complete freeze cycle when float switch circuit opens.
  • Page 12 2nd Cycle and after with pump drain IMPORTANT Freeze cycle time is limited by the freeze timer factory setting even if the float switch does not open. 1. Float switch opens and signals to complete freeze cycle. Drain timer starts counting. 5.
  • Page 13 2nd Cycle and after with no pump drain IMPORTANT Freeze cycle time is limited by the freeze timer factory setting even if the float switch does not open. 1. Float switch opens and signals to complete freeze cycle. 4. After the first 5 minutes in freeze cycle. Ready to complete freeze cycle when float switch circuit opens.

  • Page 14: Controls And Adjustments

    4. Controls and Adjustments The dip switch is factory-adjusted to the following positions: Dip Switch No. KM-1300SAH-E OFF OFF ON Switch Nos. 1 and 2: Used for adjustment of the defrost timer. The defrost timer starts counting when the thermistor reads a certain temperature at the evaporator outlet.
  • Page 15 a) Defrost Control A thermistor (semiconductor) is used for a defrost control sensor. The resistance varies depending on the suction line temperatures. The thermistor detects the temperature of the evaporator outlet to start the defrost timer. No adjustment is required. If necessary, check for resistance between thermistor leads, and visually check the thermistor mounting, located on the suction line next to the evaporator outlet.
  • Page 16 c) Drain Timer The drain timer is factory-adjusted and no adjustment is required. Dip Switch Setting No. 3 No. 4 T1: Time to drain the water tank T2: Time to restrain defrost completion d) Drain Counter Do not adjust the drain counter, or the evaporator may freeze up. The drain counter is factory-adjusted to drain the water tank every 10 cycles, and no adjustment is required.

  • Page 17: Checking The Controller Board

    e) Freeze Timer Adjust to proper specification, or the unit may not operate correctly. The freeze timer is factory adjusted and no adjustment is required. This setting determines the maximum allowed freeze time to prevent possible freeze-up issues. Dip Switch Setting (minutes) No.
  • Page 18 (ii) After the above step (i), disconnect the float switch leads from the controller board within the first 5 minutes of the freeze cycle. The unit should go into the defrost cycle after the first 5 minutes ± 20 seconds of the freeze cycle.

  • Page 19: Technical Information

    III. Technical Information A. Water Circuit and Refrigerant Circuit KM-1300SAH-E...

  • Page 20: Wiring Diagram

    B. Wiring Diagram KM-1300SAH-E Pressure Switch Cut-out psig +1.5 28.4 Cut-in 327 ± 21 psig 22.5 ± 1.5 bar...

  • Page 21: Timing Chart

    C. Timing Chart The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II.B.4. Controls and Adjustments.”...
  • Page 22 The pump motor waits for 2 seconds before starting a drain cycle. See “II.B.4. Controls and Adjustments.” The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II.B.4. Controls and Adjustments.”...

  • Page 23: Performance Data

    D. Performance Data KM-1300SAH-E APPROXIMATE ICE AMBIENT TEMP. PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE...

  • Page 24: Service Diagnosis

    IV. Service Diagnosis A. No Ice Production Problem Possible Cause The icemaker will not a) Power Supply start. b) Fuse (Inside fused disconnect, if any) c) Control Switch d) Bin Control Thermostat 1. Tripped with bin filled e) High Pressure Control f) Transformer g) Wiring to Controller Board...
  • Page 25 Problem Possible Cause [1] Continued from j) Water Supply Line previous page. k) Water Solenoid l) Controller Board Water continues to a) Float Switch be supplied, and the icemaker will not start. b) Controller Board c) Contactor Compressor will not a) Wash Switch start or stops operating.
  • Page 26 Problem Possible Cause Continued from c) Overload Protector previous page. d) Starter e) Start Capacitor or Run Capacitor f) Magnetic Contactor g) Compressor h) Controller Board Water continues to a) Water Solenoid Valve be supplied in freeze cycle. b) Controller Board No water comes from a) Water Supply Line spray tubes.
  • Page 27 Problem Possible Cause Continued from d) Pump Motor previous page. e) Controller Board Fan motor will not a) Fan Motor start, or is not operating. b) Controller Board All components run, a) Refrigerant but no ice is produced. b) Compressor c) Hot Gas Solenoid Valve d) Line Valve...

  • Page 28: Evaporator Is Frozen Up

    B. Evaporator is Frozen Up Problem Possible Cause Freeze cycle time is a) Float Switch too long. b) Water Solenoid Valve c) Controller Board All ice formed on a) Evaporator evaporator does not b) Water Supply Line fall into bin in harvest cycle.

  • Page 29: Low Ice Production

    Problem Possible Cause [3] Continued from g) Water Filter (if previous page. installed) C. Low Ice Production P roblem P ossible Cause Freez e c y c le tim e is S ee c hart A .[3] and c hec k high pres s ure c ontroller. long.

  • Page 30: Removal And Replacement Of Components

    V. Removal and Replacement of Components Ensure all components, fasteners and thumbscrews are securely in place after the equipment is serviced. 1. The Polyol Ester (POE) oils used in R-404A units can absorb moisture quickly. Therefore it is important to prevent moisture from entering the system when replacing or servicing parts.

  • Page 31: Brazing

    5) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the high-side line. Remember to loosen the connection, and purge the air from the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.

  • Page 32: Removal And Replacement Of Compressor

    C. Removal and Replacement of Compressor Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made. Note: When replacing a compressor with a defective winding, be sure to install the new start capacitor and start relay supplied with the replacement compressor.

  • Page 33: Removal And Replacement Of Drier

    16) Connect the terminals, and replace the terminal cover in its correct position. 17) Replace the panels in their correct positions. 18) Turn on the power supply. D. Removal and Replacement of Drier Always install a new drier every time the sealed refrigeration system is opened.

  • Page 34: Removal And Replacement Of Expansion Valve

    E. Removal and Replacement of Expansion Valve Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up at the expansion valve. Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

  • Page 35: Removal And Replacement Of Hot Gas Valve

    F. Removal and Replacement of Hot Gas Valve Always use a copper tube of the same diameter and length when replacing the hot gas lines; otherwise performance may be reduced. Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

  • Page 36: Removal And Replacement Of Evaporator

    13) Replace the panels in their correct positions. 14) Turn on the power supply. G. Removal and Replacement of Evaporator Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

  • Page 37: Removal And Replacement Of Thermistor

    H. Removal and Replacement of Thermistor 1. Fragile, handle very carefully. 2. Always use a recommended sealant (high thermal conductive type), Model KE4560RTV manufactured by Shinetsu Silicone, Part Code 60Y000-11, or Part Code 4A0683-01, or equivalent. 3. Always use a recommended foam insulation (non-absorbent type) or equivalent.

  • Page 38: Removal And Replacement Of Fan Motor

    I. Removal and Replacement of Fan Motor Note: When replacing a fan motor with defective winding, it is recommended that a new capacitor be installed. 1) Turn off the power supply. 2) Remove the panels. 3) Remove the closed end connectors from the fan motor leads. 4) Remove the fan motor bracket and fan motor.

  • Page 39: Removal And Replacement Of Water Valve

    J. Removal and Replacement of Water Valve 1) Turn off the power supply. 2) Close the water supply line shut-off valve. 3) Remove the top panel and front panel. 4) Remove the valve outlet tubing by releasing the clamp. 5) Remove the bracket from the unit. 6) Remove the fitting nut and water valve.

  • Page 40: Removal And Replacement Of Float Switch

    7) Remove the closed end connectors from the pump motor leads. 8) Remove the two screws and the pump motor bracket. 9) Remove the pump housing and check the impeller. 10) If the impeller is defective, install a new impeller. 11) Install the new motor or new parts, and replace the removed parts in the reverse order of which they were removed.

  • Page 41: Removal And Replacement Of Spray Tubes

    M. Removal and Replacement of Spray Tubes 1) Turn off the power supply. 2) Remove the front panel and the insulation panel. 3) Remove the rubber hoses from the spray tubes (water supply pipe). 4) Release the clamps and disconnect the rubber hoses. 5) Remove the spray tubes by squeezing the side tabs.

  • Page 42: Cleaning And Maintenance Instructions

    VI. Cleaning and Maintenance Instructions Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment. A. Preparing the Icemaker for Long Storage When shutting off the icemaker for an extended time, drain out all water from the water tank and remove the ice from the storage bin.
  • Page 43 [2] Drain the potable water tank: 1) Turn off the power supply. 2) Move the control switch to the “OFF” position. 3) Drain the water tank by removing the insulation panel and the cap located on the front bottom part of the ice dropping hole.

  • Page 44: Cleaning And Sanitizing Procedures

    1. Cleaning Procedure 1) Dilute 27 fl. oz. (800 ml) of the recommended cleaner Hoshizaki “Scale Away” or “LIME- A-WAY” (Economics Laboratory, Inc.) with 5 gal. (19 l) of water. 2) Remove all ice from the evaporator and the storage bin.
  • Page 45 10) Turn on the power supply, and start the washing process. 11) Turn off the power supply after 30 minutes. 12) Remove the front panel and the insulation panel. 13) Drain the water tank. (See step 5 above). 14) Replace the cap and the insulation panel in their correct positions. 15) Move the control switch to the “ICE”...

  • Page 46: Sanitizing Procedure - Following Cleaning Procedure

    2. Sanitizing Procedure - Following Cleaning Procedure 1) Dilute a 5.25% sodium hypochlorite solution (chlorine bleach) with water. (Add 2.5 fl. oz. (74 ml) of sanitizer to 5 gal. (19 l) of water). 2) Remove the insulation panel, if it is in its normal position. 3) Pour the sanitizing solution into the water tank.

  • Page 47: Maintenance

    C. Maintenance This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. 1) Stainless Steel Exterior To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up. 2) Storage Bin and Scoop •...

Table of Contents