Freeze-Up Check List - Hoshizaki KM-1301SWJ/3 Service Manual

J. 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?_________________.
Set Up
[ ] [ ] 4) Is the appliance stand alone?
[ ] [ ] 5) Is water line independent?
[ ] [ ] 6) Is water line correct size? If not________" .
3/8" Nominal ID Copper Water Tubing or
Equivalent.
7) What is water pressure?___________.
Water Temperature_________.
[ ] [ ]
If yes please list the following:
Filter brand___________________.
Model________________.
cycle___________.
replaced?__________________________.
system?__________________.
9) Ambient temperature at appliance?
______________.
At remote condenser (if applicable)?________.
Appliance Status
[ ]
11) List the S4 (1-10) and S5 (1-5) DIP switch
settings.
S4: 1___2___3___4___5___6___7___8___9___10____
S5: 1_____2_____3_____4_____5______
[ ] [ ] 12) Is DIP switch number 7 ON (harvest pump
time (harvest assist) all models and freeze-time
correction models with control board
2A7664-02?
[ ] [ ] 13) Is the cube guide positioned correctly?
[ ] [ ] 14) Are the evaporator separators positioned
properly?
[ ] [ ] 15) Is the thermistor properly mounted, tight, and
insulated?
[ ] [ ] 16) Is the TXV bulb properly mounted, tight, and
insulated?
[ ] [ ] 17) Are splash guards in place?
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

Technical Support Fax #: 770-487-3360
Make Copies And Use As Needed
Appliance Operation
YES
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Freeze-Time Correction Operation - Control Board 2A7664-02
[ ]
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1
38
Fill
NO
60-90 sec. Note: Larger models may take up to
[ ] 19) If NO in step 18, is
Harvest
[ ] 20) Is the hot gas valve opening?
[ ] 21) Is harvest pump time (harvest assist) utilized
(S4 dip switch 7)?
[ ] 22) Is hot gas valve opening in harvest?
[ ] 23) Does water valve close completely when
de energized?
24) What was length of harvest?___________.
Freeze
[ ] 25) Is pump motor energized in freeze cycle except
during 10-sec. slush control. If activated (S5 dip
switch 5 on)?
26) Water-cooled condenser outlet temperature
5-min. into freeze? ______________°F.
27) What was length of freeze?____________.
[ ] 28) Is the cube size consistent from inlet to outlet of
evaporator?
[ ] 29) Is ice still dropping when next freeze cycle starts?
30) What is the ice drop weight?___________.
31) What is head pressure?
Freeze_________Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
32) What is suction pressure?
Freeze______Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
[ ] 33)
ice contacts the bin controls thermostatic bulb?
[ ] 34) Has Freeze-Time Correction been activated?
("POWER OK" LED blinking).
[ ] 35) Has moer than 1 Freeze-Time Correction been
activated?
(POWER OK" LED and "EXT HARVEST" LED
blinking).