Troubleshooting; Common Problems - Jackson DishStar HT Installation, Operation And Service Manual

TROUBLESHOOTING

WARNING: Inspection, testing, and repair of electrical equipment should only be performed by qualified
!
service personnel. Certain procedures in this section require electrical tests or measurements while
power is applied to the machine. Exercise extreme caution at all times. If test points are not easily
WARNING
accessible, disconnect power, attach test equipment, and reapply power to test. When replacing
electrical parts, disconnect power at source circuit breaker.
PROBLEM POSSIBLE CAUSE
Water overflow
1. Clogged drain.
from bottom of
door. 2. Machine not level.
3. Excessive inlet pressure.
4. Detergent foaming.
5. Wash/rinse arm end-cap missing.
Wash motor 1. Loose or broken wires.
doesn't
operate on 2. Defective "WASH/DELIME" switch.
delime wash.
3. Defective motor starting relay.
4. Machine in FAULT mode and locked out.
No water
comes through
the arms when 1. Water not turned on.
the "WASH/
DELIME" switch 2. Defective solenoid valve
is depressed.
Little or no water 1. Limed-up heads or piping.
coming through
the wash/rinse 2. Low water pressure.
assemblies.
Rinse water runs 1. Defective plunger in solenoid valve.
continuously
with breaker 2. Defective diaphragm in solenoid valve.
turned off.
07610-004-37-13-E

COMMON PROBLEMS

REMEDY
1. Remove obstruction.
2. Level machine or increase height to the front.
3. Install pressure regulator or adjust if one is present.
Ensure flow meets data plate specification.
4. Reduce detergent quantity.
5. Replace.
1. Reconnect or replace wires in motor.
2. Verify "WASH/DELIME" switch triggers input on PLC. If
not, check wiring/replace membrane.
3. Replace.
4. Review fault screen for active faults.
1. Turn water on.
2. Replace solenoid valve.
1. Delime heads.
2. Adjust pressure regulator (not supplied) or increase
pipe size to machine.
1. Replace.
2. Replace diaphragm.
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