This unit has a probe-direct sensing type thermostat with fixed set point and adjustable range for both wash and booster tank heat reg-
ulating. The same type thermostat is used as the high limit sensor for the wash tank heater. It operates a precision single double throw
switch through a lever for close tolerance narrow differential switching capability. The unit has screw driver adjustment and front con-
nect terminals and is mounted by 7/16”-24 thread, Loxit fitting for easy removability and serviceability. The thermostat range is from
140
°F
to 240
°F
with a maximum bulb exposure temperature of 300
°F
. Unit is listed at 12.5 amps at 24/120 VAC.
There are three (3) thermostats on the dishwasher. One monitors the wash tank temperature, the second monitors the rinse water tem-
perature with the third protecting the heater element. Although all are identical in appearance there are different replacement part num-
bers depending on the function of the thermostat.
Calibration:
The hi-limit thermostat is used to protect the heater element in the event of a run away regulating thermostat or a dry fire situation. It
is set for 210
°F
+0 or -10
°F
with a fixed set point. This part is not adjustable.
The wash tank regulating thermostat will maintain the correct wash water temperature to meet NSF requirements. These specify that
the wash be no lower than 150
°F
. It is set at the factory to energize the tank heater at 155
°F
and de-energize at 167
°F
.
The rinse tank regulating thermostat will maintain the correct rinse water temperature to meet NSF requirements. It is factory set to
energize the rinse tank heater at 195
°F
and de-energize at 200
°F
.
To order the thermostats:
Thermostat, High Limit 5930-121-71-36
Thermostat, Wash Tank 5930-121-67-72
Thermostat, Rinse Tank 5930-121-71-29
To convert from the old style “bayonette” thermostats, you will
need these kits:
Kit, Thermostat, High Limit with Bracket 6401-021-83-86
Kit, Thermostat, Wash Tank with Bracket 6401-021-83-90
Kit, Thermostat, Rinse Tank with Bracket 6401-021-83-83
THERMOSTATS/WASH HEATERS/RINSE HEATERS
26
40
°F Rise
70
°F Rise
Model
Volts Hz Phase Wash Heater Rinse Heater (12 KW) Rinse Heater (14 KW)
Tempstar 208 60 1 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar 230 60 1 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar 208 60 3 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar 230 60 3 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar 460 60 3 4540-121-65-99 4540-100-01-15 4540-121-63-39
Tempstar SDS 208 60 1 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar SDS 230 60 1 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar SDS 208 60 3 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar SDS 230 60 3 4540-121-47-39 4540-121-47-40 4540-121-63-38
Tempstar SDS 460 60 3 4540-121-65-99 4540-100-01-15 4540-121-63-39
Tempstar NB 208 60 1 4540-121-47-39
Tempstar NB 230 60 1 4540-121-47-39
Tempstar NB 208 60 3 4540-121-47-39
Tempstar NB 230 60 3 4540-121-47-39
Tempstar NB 460 60 3 4540-121-65-99
The Tempstar models covered in this manual come supplied with various heaters, depending on the characteristics of the machine. To
ensure that you order the correct heater for the model you are servicing, please refer to the following table:
To Next Page
Loading...