Freeze-Up Check List - Hoshizaki IM-500SAB Service Manual

H. Freeze-Up Check List
Please Complete When Diagnosing a Freeze-Up, Refrigerant Leak, or Low Charge
Model #___________________________ Serial # ____________________Install Date____________Freeze-Up Date___________
List model and manufacture of bin or dispenser__________________________.
Date appliance was last cleaned:__________.
Freeze-Up Defrost
YES NO
[ ] [ ] 1) After defrosting, was the appliance leak
checked?
[ ] [ ] 2) Were any leaks found?
If so where?_____________________.
[ ] [ ] 3) Was any refrigerant added to the unit?
If so, how much?_________________.
Setup
[ ] [ ] 4) Is the appliance stand alone?
[ ] [ ] 5) Is water line independent?
[ ] [ ] 6) Is water line correct size? If not________" .
1/4" Nominal ID Copper Water Tubing or
Equivalent.
[ ] [ ] 7) What is water pressure?___________.
Water Temperature_________.
[ ] [ ] 8) Does appliance have any water filtration?
If yes please list the following:
Filter brand___________________.
Model________________.
Filter pressure gauge reading during the fill
cycle___________.
Date filter was last
replaced?__________________________.
GPM or LPM flow rate of filter
system?__________________.
[ ] [ ] 9) Ambient temperature at appliance?
______________.
At remote condenser (if applicable)?________.
Appliance Status
[ ] [ ] 10) Is the appliance dirty?
[ ] [ ] 11) Are the actuator springs in place?
[ ] [ ] 12) Are actuator cam A and Cam B in their correct
positions?
[ ] [ ] 13) Is the bin control properly mounted and
secured?
[ ] [ ] 14) Is the evaporator thermistor properly mounted,
tight, and insulated?
[ ] [ ] 15) Is the TXV bulb properly mounted, tight, and
insulated (wrapped)?
[ ] [ ] 16) Is there an error code on the control board
display? if so, what error code?___________.
Note: Make copies of this form and use it when diagnosing a freeze up condition. Submit a completed copy of the checklist
along with the freeze-up labor claim form.
Freeze-Up Check List IM Series
Technical Support Fax #: 770-487-3360
Make Copies And Use As Needed
Appliance Operation
YES
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
1
21
Startup
NO
[ ] 17) Does the water tank fill and overflow?
[ ] 18) If NO in step 17, is water flow 5GPM or more?
Harvest
[ ] 19) Is the hot gas valve opening?
[ ] 20) Does the water valve remain energized for the
appropriate time?
[ ] 21) Does the water valve energize at correct times?
[ ] 22) Does water valve close completely when
de- energized?
23) What was length of harvest?___________.
Freeze
[ ] 24) Is pump motor energized in freeze cycle except
during pump motor delay?
[ ] 25) Are the water plate spray holes clean and
providing proper water flow?
26) What was length of freeze?____________.
[ ] 27) Is the cube size consistent across evaporator?
[ ] 28) Is dimple size consistent throughout ice drop?
29) What is the ice drop weight?___________.
30) What is head pressure?
Freeze_________Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
31) What is suction pressure?
Freeze______Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
[ ] 32) Did appliance shut down when the bin control
was activated?