Instruction/ maintenance manual of the product IM-51BAE Hoshizaki
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1 IM SERVICE TRAINING Featuring the IM-51BAE 80041 9/9/99.
2 All IM models have similar sequence of operation. This manual is designed as a generic IM Training manual. The Hoshizaki IM series ice machine uses a horizontal evaporator design. This compact unit is designed for counter-top, under-counter, or free- standing installations.
3 This horizontal evaporator and water distribution system is unique to the IM series. The ABS water plate sprays water up into the evaporator cells to form the square IM cube. The moveable water pan assembly includes the water plate, reservoir pan, and pump motor assembly.
4 The front cam arm has a switch lever that operates the actuator toggle switch located above the pan assembly. The actuator toggle switch controls the direction of rotation for the actuator motor and energizes the pump motor during the freeze cycle.
5 The louver has a flip down cover to access the control switch. The switch has 3 positions. ICE, OFF, & WASH. The louver covers the compressor compartment. Remove the louver screws and lift the louver forward to access the condenser coil fan assembly and compressor.
6 The control box is accessed from the rear of the unit. Remove the screws holding the pipe cover and the control box cover to reach the control board and other components. A solid state board controls the IM operation. Several adjustments are included on the board.
7 The actuator motor turns counter clock wise to rotate the cam arms and lower the water pan away from the evaporator. When the water plate is completely down the switch lever moves the actuator toggle switch to the left. The board energizes the inlet water valve and condenser fan motor and de-energizes the hot gas valve.
8 The freeze cycle is controlled by a thermistor, which is mounted at the evaporator outlet. The pump is spraying water up into the evaporator cells to form the square IM cubes. The evaporator temperature lowers as the ice cubes form. A thermistor temperature of – 9.
9 The unit will continue through the freeze and harvest cycle until the bin control shuts down the refrigeration system. When pushed over, the bin control has a 10-second delay before shut down occurs. An 85-second delay occurs at startup when the bin control is released.
10 The maximum freeze timer is VR3. This timer will automatically switch the unit to the harvest cycle if the freeze cycle last longer than the setting time. The factory setting is 45 minutes. The defrost control VR2 will adjust the time period between ice-drop and actuator motor restart during harvest.
11 A red Service Indicator LED is also included on the control board. This LED will either light continually or flash to indicate a service fault. A fault diagnosis chart in the service manual will help the technician determine the actual problem. See chart next page.
12 FAULT DIAGNOSIS Check the status of the Service lamp on the Controller Board (LED-5) by removing the Control Box Cover. Lamp ON – Water Plate closed This tends to indicate the Back-up Timer has stopped machine operation during the freeze cycle. High ambient and water temperature are an obvious cause.
13 PATTERN INTERLOCK INDICATOR WATER TANK POSITION POSSIBLE CAUSE REMEDY 1 2 0V Leak 3 Hot Gas leak 4 5 Gas 2 6 1 115v 2 Gas 3 3 1 Lever 2 3 4 Actuator motor Pin 4 5 Freeze Cycle Clogged Air Filter and/or Condenser Clean or Replace Replace Replace Check for leak Replace Comp.
14 WIRING DIAGRAM IM-51BAE.
15 IM SERIES REVIEW QUIZ C hoose the best answer for each question below. 1. The IM control board is located in the rear or the unit. True False 2. The IM unit uses a thermostatic bin control. True False 3. The bin control switch must OPEN or Close to shut the unit down.
16 NOTES: Quiz answers: 1.True , 2. False , 3. Close , 4. R-134A , 5. Left , 6. CW , 7. – 9.4ºF , 8. 45 min. , 9. Harvest initiation , 10. 24 volt.
An important point after buying a device Hoshizaki IM-51BAE (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hoshizaki IM-51BAE yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hoshizaki IM-51BAE - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki IM-51BAE you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki IM-51BAE will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki IM-51BAE, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hoshizaki IM-51BAE.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki IM-51BAE. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki IM-51BAE along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
