STERO SD3 Series, Service And Parts Manual

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WATER SUPPLY REQUIREMENTS
Model
Temperature
(minimum)
Flowing
Pressure
Hardness
grains/gal.
1
Chlorides ppm Water Usage
1
Water hardness below 4 grains/gal requires water treatment to reduce potential corrosion. Hardness
above 6 grains/gal should be treated by water conditioner, water softener or in-line treatment.
MACHINE CYCLE TIMES AND CAPACITY (RACKS / HOUR)
Model
Cycle
Settings
Time in Seconds (maximun time settings)
1st 1/2 Fill 2nd 1/2 Fill
Wash
Duration
1
Dwell
2
Rinse
2
Sani-Dwell
2
All
1
Variable up
to 150
Variable
75-120
38 (38-99)
2 (2-15) 10 (10-35) 7 (7-15) 2 120
4 360
1
Machine cycles 1, 2, and 4 are selected via the keypad. Cycle 1 wash duration is adjustable through the
SERVICE PROGRAMMING mode, where the wash time can be adjusted to values above NSF minimums.
2
Dwell, rinse and sani-dwell times are adjustable to values above NSF minimums. Times chosen for each
parameter will apply to all cycle selections.
REFERENCE MATERIAL
For replacement parts, refer to SD3 Catalog of
Replacement Parts.
Refer to Lubrications Manual F-20067 for current
values.
For operation and care instructions, refer to
Operator's Manual.
POWER-UP
On power-up, the control board will perform a
self-test. Once the control successfully
completes and exits the selftest routine, the
machine is ready for operation.
FILL CYCLE
The fill consists of two parts. The first part of the fill is
defined as the time required to fill the tank until the
float switch 1FS closes (150 seconds maximum). The
time duration for the second part of the fill is equal to
the time elapsed for the first part of fill multiplied by
1.25 (75 seconds minimum, 120 seconds maximum).
The chamber door must be closed for the fill/rinse
solenoid (1SOL) to be energized and begin filling the
tank. Opening the chamber door before the float
switch is closed will de-energize the fill/rinse solenoid
1SOL suspending the fill cycle. When the chamber
door is closed, the fill cycle will continue. If the
chamber door is opened any time after the float switch
is closed, the fill cycle will be terminated, even if
second part of fill did not complete. When the chamber
door is closed after the float switch is closed, a wash
cycle will begin.
If the float switch does not close after the maximum
allowed time for the first half of fill (150 seconds), an
[ E2 ] error code will be displayed. To clear an error
from the display, cycle power by turning the machine
off then back on. When the float switch closes, the
controls will begin regulating tank heat. When the fill
cycle is complete, the FILL icon turns off while the tank
temperature continues to be displayed. The machine
will continue heating the tank as required to reach and
maintain the tank heat set point.
BOOSTER TEMPERATURE
CONTROL
Booster Temperature Control
NOTE:
The Rinse Assurance is on by default for an
SD3. Adjustments to this selection can be made by
the service technician through CONTROL BOARD
PROGRAMMING.
Once the initial fill is complete, if no cycles are run, the
booster has eight minutes to reach its set point. If the
booster does not reach temperature within the eight
minute timeout, an error code [ EE ] will be displayed.
To clear an error from the display, cycle power by
turning the machine off then back on.
SD3 Series - GENERAL
F45576 (1015) Page 4 of 37