Hoshizaki IM-30CA Service Manual
  1. Manuals
  2. Brands
  3. Hoshizaki Manuals
  4. Ice Maker
  5. IM-30CA
  6. Service manual
Hoshizaki IM-30CA Service Manual

Hoshizaki IM-30CA Service Manual

Controller board
Hide thumbs Also See for IM-30CA:
Table of Contents

Advertisement

Quick Links

Download this manual
CONTROLLER BOARD
SERVICE MANUAL
This service manual provides information on the controller board used for
Hoshizaki IM-30CA, IM-45CA, and IM-65A cubers.
Please also refer to the general service manual for the applicable model.
If any information contained herein is inconsistent with the instruction or
installation manual, follow the latter manual.
IM-30CA
IM-45CA
IM-65A
M035-922 (121322)

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the IM-30CA and is the answer not in the manual?

Questions and answers

Related Manuals for Hoshizaki IM-30CA

Summary of Contents for Hoshizaki IM-30CA

  • Page 1 SERVICE MANUAL This service manual provides information on the controller board used for Hoshizaki IM-30CA, IM-45CA, and IM-65A cubers. Please also refer to the general service manual for the applicable model. If any information contained herein is inconsistent with the instruction or installation manual, follow the latter manual.

  • Page 2: Table Of Contents

    CONTENTS PAGE 1. CONFIGURATION ---------------------------------------------------------------------- 1 [a] INPUT/OUTPUT LAYOUT -------------------------------------------------------- 1 [b] INPUT/OUTPUT CIRCUIT -------------------------------------------------------- 2 [c] BOARD CONFIGURATION ------------------------------------------------------ 3 [d] SWITCH OPERATION ------------------------------------------------------------- 4 2. OPERATION ----------------------------------------------------------------------------- 5 [a] SOFT START ------------------------------------------------------------------------ 5 [b] DEFROST CYCLE ------------------------------------------------------------------ 6 [c] WATER PAN CLOSES ------------------------------------------------------------- 6 [d] FREEZE CYCLE -------------------------------------------------------------------- 6 [e] FREEZE COMPLETION CONTROL ------------------------------------------- 8...

  • Page 3: Configuration

    1. CONFIGURATION [a] INPUT/OUTPUT LAYOUT * : Not in use *1: SW3 *2: SW2 *3: SW1 Position Detection (Hall IC) Cube Control Thermistor Input for Actuator Motor Speed Signal 7-Segment Output for DC Double-Digit Pump Motor Display Bin Control Switch Input Reset Button 24V DC Power Supply for DC...

  • Page 4: [B] Input/Output Circuit

    [b] INPUT/OUTPUT CIRCUIT...

  • Page 5: [C] Board Configuration

    [c] BOARD CONFIGURATION [Main Board] [Sub Board] 7-segment display board The direction to install the sub board depends on models and is easily changeable by connectors. Horizontal installation into control box Vertical installation into control box...

  • Page 6: [D] Switch Operation

    [d] SWITCH OPERATION 1) The following is the switch operation flow in different modes. When pressed and released, the switch detects the operation by its pressing duration. Freeze setting mode Freeze setting mode Water pan opens (initial cycle) Normal mode Display mode (press 3s) Flush mode (press 3s) Maintenance mode (press 3s)

  • Page 7: Operation

    2) To clear the current model code information and enter the model setting mode, press the up and down switches together for 15 seconds while the model code is indicated in the display mode (see “3. [c] DISPLAY MODE”). Return to Model setting normal mode mode...

  • Page 8: [B] Defrost Cycle

    stops for 60 minutes. If the error recurs after the unit resumes operation, the display shows “EE” and the unit shuts down (recorded as “E3” in error history). [b] DEFROST CYCLE 1) After the water pan opens, the hot gas valve opens until the defrost completion temperature is reached.
  • Page 9 * The offset value for the cube control thermistor temperature is adjustable in the maintenance mode (see “3. [b] MAINTENANCE MODE”). 4) The freeze cycle is considered to be 100% complete when the predetermined target integrated values are reached. * The target integrated values (temperature and time) for the freeze completion are adjustable in the maintenance mode (see “3.

  • Page 10: [E] Freeze Completion Control

    [e] FREEZE COMPLETION CONTROL 1) The target integrated values (cube control thermistor temperature and freeze cycle time) are set for freeze completion. * The target integrated freeze completion temperature and time are adjustable in the maintenance mode (see “3. [b] MAINTENANCE MODE”). 2) After the cube control thermistor senses a temperature below 0°C, the cube control thermistor temperature and freeze cycle time are integrated every second.
  • Page 11 1) Spring/fall 2) Summer Dimple size 5mm Smaller dimple size -18°C -18°C Freeze cycle time (min) Freeze cycle time (min) 3) Winter Larger dimple size -18°C Freeze cycle time (min) Comparison of the evaporator temperature curves finds that the red-colored area varies in different seasons.

  • Page 12: [F] Water Supply Control

    This area corresponds to the energy on ice. Making these different areas into one can equalize the dimple size. To calculate the energy required for ice production, the actual ice production area under 0°C in the evaporator temperature curve is approximated into a triangle. This area can be calculated by Time x temperature ÷...

  • Page 13: [G] Ambient Temperature Correction

    * The icemaking water supply time and additional water supply time are adjustable in the maintenance mode (see “3. [b] MAINTENANCE MODE”). 2) After the water pan starts to open, the water valve opens in 20 seconds to supply defrosting water (water pan cleaning water) for a specific time. The defrosting water supply time varies between the water temperatures above and below 13°C.

  • Page 14: [I] Bin Control Cycle

    [i] BIN CONTROL CYCLE 1) When the bin control switch stays on for more than 10 seconds, the bin control cycle starts and the icemaker stops. After the bin control switch stays off for more than 80 seconds, the bin control cycle ends and the icemaker restarts. (The hot gas valve opens 30 seconds before the icemaker restarts.) 2) After the bin control cycle ends (or when the power supply is turned on), the water pan starts to open (if the icemaker stopped while the water pan was...

  • Page 15: [K] 7-Segment Led

    [k] 7-SEGMENT LED 1) When the power supply is turned on, the display shows “on” and the automatic icemaking process starts. 2) When the up or down switch is pressed, the display shows the current setting. When the switch is pressed again, the setting becomes adjustable. When the switches are not pressed for 30 seconds, the adjusted setting is determined with “on”...

  • Page 16: [B] Maintenance Mode

    operates and the display shows “E2”. To reset, press the down switch for 3 seconds. Note: 1. The freeze backup timer and defrost backup timer are available in the water circuit flush mode. As the compressor is off in the flush mode, these timers operates to stop the icemaker in case the freeze or defrost cycle does not complete.
  • Page 17 Maintenance Mode List Item Description Range Step 1 Defrost Temperature to complete defrost 2 to 20°C completion temp cycle (detected by cube control thermistor) 2 Integrated Target integrated value inside -5 to -40°C constant 1 (temp) controller board is determined by constants 1 and 2.
  • Page 18 11 Defrosting water Time to supply defrosting water to 1 to 99 sec supply time, melt ice on water pan at water water temp 13°C supply temp of 13°C or more. or more Adjustable between 1 and 99 sec. When set to “99”, defrosting water keeps running until cube control thermistor senses defrost completion temp.
  • Page 19 50 Pump off time Pump off time for slush ice 0 to 90 sec, control to stop pump after 2 min 0: no control at evaporator temp of 3 to 4°C, quickly refrigerate evaporator before icemaking water supercools, and form ice core. When set to “0”, there is no slush Slush ice ice control.
  • Page 20 Maintenance Mode Settings * Old pump motor: auxiliary code L0 and earlier Item IM-45CA IM-30CA IM-45CA-25 1 Defrost completion temp 2 Integrated constant 1 (temp) -11.5 -14.5 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value...
  • Page 21 * New pump motor: auxiliary code L1 and later Item IM-45CA IM-30CA IM-45CA-25 1 Defrost completion temp 2 Integrated constant 1 (temp) -11.5 -14.5 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value 5 Ambient temp correction rate for...
  • Page 22 * Old pump motor: auxiliary code L0 and earlier IM-45CA IM-30CA Item IM-30CA-25 (60Hz) (60Hz) 1 Defrost completion temp 2 Integrated constant 1 (temp) -18.5 -12.5 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value...
  • Page 23 * New pump motor: auxiliary code L1 and later IM-45CA IM-30CA Item IM-30CA-25 (60Hz) (60Hz) 1 Defrost completion temp 2 Integrated constant 1 (temp) -18.5 -12.5 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value...
  • Page 24 * Old pump motor & Jiaxipera compressor: auxiliary code H0 and earlier IM-65A Item IM-65A IM-65A-25 (60Hz) 1 Defrost completion temp 2 Integrated constant 1 (temp) 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value 5 Ambient temp correction rate for integrated value 6 Freeze backup timer...
  • Page 25 * Old pump motor & Secop compressor: auxiliary code H1 to L0 IM-65A Item IM-65A IM-65A-25 (60Hz) 1 Defrost completion temp 2 Integrated constant 1 (temp) 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value 5 Ambient temp correction rate for integrated value 6 Freeze backup timer...
  • Page 26 * New pump motor & Secop compressor: auxiliary code L1 and later IM-65A Item IM-65A IM-65A-25 (60Hz) 1 Defrost completion temp 2 Integrated constant 1 (temp) 3 Integrated constant 2 (time) 4 Ambient temp correction operating temp Basic for integrated value 5 Ambient temp correction rate for integrated value 6 Freeze backup timer...

  • Page 27: [C] Display Mode (Log Clearing)

    [c] DISPLAY MODE (LOG CLEARING) When the up switch is pressed for more than 3 seconds, the display mode starts to allow various items and logs to be checked, displayed or cleared. 1) Press the up switch for more than 3 seconds while the unit is running. The display shows “n1”.

  • Page 28: [D] Model Code Setting Mode

    h3 Total number of freeze < Display > cycles e.g. 655350 cycles (start) (end) 65→off→53→off→50→off→ - - h4 Error log Display up to 5 errors from latest to oldest for 1 sec ON, 0.5 sec OFF, “- -“ at the end, then back to latest error.

  • Page 29: Segment Display

    1st Digit 2nd Digit Model IM-65A IM-45CA IM-30CA IM-65A-25 IM-45CA-25 IM-30CA-25 IM-65A (60Hz) IM-45CA (60Hz) IM-30CA (60Hz) 4. 7-SEGMENT DISPLAY [a] NORMAL MODE Item Display Power on Defrost cycle Freeze cycle Bin full Display range from -5.0 to -40.0 Freeze temp...

  • Page 30: [B] Maintenance Mode

    Flash E1: Abnormal freeze cycle E2: Abnormal defrost cycle EE: Other Error code (See “5. ERROR CODES”) Water circuit flush [b] MAINTENANCE MODE Item Display (example) 1 Defrost completion temp 16°C 2 Integrated constant 1 -18°C -18.5°C Dot appears for value (temp) with “.5”...
  • Page 31 Current cube control -19°C 24°C thermistor temp Current ambient thermistor temp Water temp (presumed) Water temp 13°C or more Water temp less than 13°C N / A Display 0. Current pump RPM Display 1/100 of actual value. Round to the nearest whole number.

  • Page 32: Error Codes

    5. ERROR CODES [a] ERROR CODES, CAUTION CODES * When the controller board detects an error, the display shows one of the following error and caution codes in the display mode. Operation depends on the type of error. * The error and caution codes other than E1 and E2 are indicated as “EE” in the 7-segment display at the time of occurrence.

  • Page 33: [B] Service Diagnosis

    Caution Item Description Operation Reset If pump motor reaches target RPM within certain period of time after startup, After 30 minutes, Low water a defrost cycle (water pan Shut down automatically resets and detection opens and closes) runs. If restarts the above occurs again, C1 appears.

  • Page 34: Troubleshooting

    Caution Check Possible Cause Remedy Low water Check main valve Water circuit Low water pressure Set to appropriate pressure Defective Replace Water valve Connector disconnected Reconnect Clogged filter Clean Pump motor Defective Replace Loose connection Correct Pump motor suction Defective gasket Replace Loose hose connection Correct...

  • Page 35: Removal And Replacement

    7. REMOVAL AND REPLACEMENT The replacement controller board is in common use for the entire IM models. To replace: 1) Unplug the icemaker or disconnect the power source. 2) Remove the front cover and control box cover. 3) Disconnect all the connectors from the controller board. Remove the controller board from the control box.
  • Page 36 the up and down switches for 15 seconds whilst the code is displayed (in display mode). The machine will stop working and the display will reset to “00” (cleared memory). The controller board will then need to be reprogrammed (select and memorise the correct code for the machine) using steps 7) and 8) above.

  • Page 37: Timing Chart

    8. TIMING CHART...
  • Page 39 Notes on timing charts Item IM-65A IM-45CA IM-30CA Water pan defrost Ambient temp in control 18°C - 47°C 20°C - 47°C 20°C - 43°C control Hot gas valve on/off time T1 10 / 20s 2 / 28s 5 / 25s Defrosting water supply time (water temp.

This manual is also suitable for:

Im-45caIm-65a

Table of Contents