Service Manual

34
I. Freeze-Up Check List
1
Freeze-Up Check List
Please Complete When Diagnosing a Freeze-Up, Refrigerant Leak, or Low Charge
Technical Support Fax #: [phone]
Make Copies And Use As Needed
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_________.
[ ] [ ] 8) Does appliance have any water ltration?
If yes please list the following:
Filter brand___________________.
Model________________.
Filter pressure gauge reading during the ll
cycle___________.
Date lter was last
replaced?__________________________.
GPM or LPM ow rate of lter
system?__________________.
9) Ambient temperature at appliance?
______________.
At remote condenser (if applicable)?________.
Appliance Status
[ ] [ ] 10) Is the appliance and/or oat switch dirty?
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 (if applicable)?
Appliance Sequence of Operation
Fill
YES NO
[ ] [ ] 18) Does the water tank ll and overow?
60-90 sec. Note: Larger models may take up to
120 seconds to overow when empty.
[ ] [ ] 19) If NO in step 17, is water ow 5GPM for larger?
Harvest
[ ] [ ] 20) Is the hot gas valve opening?
[ ] [ ] 21) Is harvest pump time (harvest assist) utilized
(S4dip 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. anti-slush. 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 freeze cycle).
32) What is suction pressure?
Freeze______Harvest_______.
(Freeze pressure should be taken 5 minutes into
the freeze cycle).
[ ] [ ] 33) When activating bin control, did appliance
shutdown within 15seconds in the rst 5minutes
of freeze cycle?
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.