Freeze-Up, Refrigerant Leak Or Low Charge Checklist Template
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1FREEZE-UP CHECKLIST
Freeze up checklist: This form is required on any evaporator replacement and can be used to help diagnose a
repeated freeze up condition. Make copies as needed and submit with the claim.
Revised 11/09DM
FREEZE UP CHECK LIST;
COMPLETE WHEN DIAGNOSING A FREEZE-UP,
17. Does water valve close completely when de- YES
NO
REFRIGERANT LEAK, OR LOW CHARGE.
energized? i.e. does it leak by during freeze?
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MODEL#_________________SERIAL#________________
18. What is the inlet water pressure? ____________ psig
INSL DATE ______________FAIL DATE_______________
What is inlet water temperature? _____________° F
Single Stacked
19. List the control board dip switch settings:
1. Single unit or stacked equipment?
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YES
NO
1 _______ 2 _______ 3 _______ 4 _______ 5 _______
6 _______ 7 _______ 8 _______ 9 _______10 _______
2. Condition of float switch - Dirty float?
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Are contacts opening when float is down?
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20. Is cube size consistent from inlet to the outlet
3. Confirm…Is water pump always running during
of evaporator plates? (Full freeze pattern)
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the freeze cycle.
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21. Is KM cube normal shape and size?
4. Is thermistor properly mounted?
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If not describe: _______________________
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5. Is the TXV bulb tight and insulated?
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22. Was any refrigerant added to the unit?
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If so, how much?
__________________________
6. Is water flow adequate to fill sump to overflow last
60 ~ 90 seconds of a normal harvest?
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23. Was the unit leak checked?
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Were any leaks found?
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7. Is the water line sized properly? Small units up to
If so, where? (Be specific)
KM-900 3/8” large units 1/2”? If not ______
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_____________________________________________
8. Do some ice cubes remain on the evaporator plates
24. What is the head pressure?
when next freeze cycle starts?
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Freeze ___________ Harvest _____________
9. For stacked or side by side units…are separate water
lines supplied?
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25. What is the suction pressure?
Freeze ____________Harvest _____________
10. When evaporator plates are dry, do you see scale?
Scale color: ________________________
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Date evaporators were last cleaned ________________
26. What is length of Freeze cycle______________
Harvest cycle? _______________
11. Will thermostatic bin control cycle unit off within 6
seconds when in contact with ice?
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27. Ambient temperature at unit _____ ° F, at cond . ______° F
12. Have you checked the bin control to assure the
capillary is not touching a hot or cold source? [ ]
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28. Water-cooled condenser outlet water temp _________° F
13. Are the evaporator separators , blue hooks and cube
29. Is the hot gas valve opening?
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guides positioned properly?
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30. List model & manufacturer of bin: ________________
14. Does mechanical bin control cycle the unit off in 6~15
seconds within the first 5 minutes of freeze?
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Or dispenser:________________________________
15. Does the unit have any water filtration?
31. If non-Hoshizaki bin, what modifications have been made to
If so, list the following:
bin control mounting?
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Filter brand:___________________________________
Filter model:__________________________________
32. Has stainless steel extension bracket been added to
the bin control bracket?
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Filter pressure gauge reading during fill__________psig.
Date filter last replaced:______________________________
33. ICE DROP BATCH WEIGHT:_______________________
34. Do ice cubes continue to fall after the freeze cycle starts?
16. Is water inlet valve screen clean?
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Parent category: Life