STERO SG, Service And Parts Manual

Page: 4 / 93

GENERAL
INTRODUCTION
This manual is applicable to the models on the cover
page. Procedures apply to all models unless specified
otherwise.
MODELS COVERED
The SU and SG Series dishwashers are fully
automatic, front-loading dishwashing machines.
SU-L 33 racks per hour
SU-H 31 racks per hour
SG 34 racks per hour
All SU and SG Series dishwashers shut down
automatically 4 hours after last use to conserve
energy.
SU-H dishwashers include Rinse Assurance to insure
proper hot water temperature during rinse.
MODEL DESCRIPTION
SU-L
SG
Fresh water rinse; low-temperature,
chemical-sanitizing models for use
with 6% or 8.40% sodium hypochlorite
solution (bleach) as the sanitizing
agent.
SU-H
Fresh water rinse with a built-in 70° F
rise booster heater. This allows an
incoming water temperature of 110° F.
TOOLS
Standard
• Standard set of hand tools.
• Metric set of hand tools.
• VOM with measuring micro amp current tester.
Any VOM with minimum of CAT III 600V, CE
certified. Sensitivity of at least 20,000 ohms per
volt can be used. In addition, meter leads must
also be a minimum of CAT III 600V.
• Temperature tester (thermocouple type).
• Field service grounding kit.
Special
• Precision Chlorine Test Paper Vial, for testing
sanitizer p.p.m.
• Cleaner used in removal of switch membrane.
• T25 Torx bit. Used in removal of door.
• Service Tool: Used in removal of Wash Pump Nut
and Wash Manifold Nut .
Fig. 1
ELECTRICAL SPECIFICATIONS
NOTE: Always check incoming voltage to verify
service connection meets machine specification.
ELECTRICAL SPECIFICATIONS
Model Volts / Hertz / Phase Rated Amps
Minimum Supply
Circuit Conductor
Ampacity
Maximum Protective
Device Ampacity
SG 120/60/1 15.4 20 20
SU-L 120/60/1 13.4 20 20
SU-H
120/208-240(3W)/60/1 30.5 40 40
NOTE: This system requires three power wires that include a current carrying neutral. An additional
fourth wire must be provided for machine ground.
SG, SU-L, SU-H DISHWASHERS - GENERAL
F45577 (1215) Page 4 of 59