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JP-24 Technical Manual 7610-002-49-79 Rev. D
Issued: 03-06-2006 Revised: N/A
SECTION 5: SERVICE PROCEDURES
RINSE REGULATING THERMOSTAT REPLACEMENT
25
Many dishmachines comes with integral booster
tanks to ensure proper temperature of the final rinse. Jackson
has predominantly used two manufacturers of thermostats,
EGO and Stemco. These instructions are for use with kit
06401-003-13-94, which is to replace an EGO rinse regulating
thermostat with a Stemco brand.
Jackson offers all of the repair parts necessary for
performing this task.
The instructions provided here are for maintenance
personnel only. Unauthorized persons should not attempt any
of the steps contained in these instructions.
Warning: many of the instructions and steps
within this document require the use of tools. Only autho-
rized personnel should ever perform any maintenance
procedure on the dishmachine!
PREPARATION
1. Power must be secured to the unit at the service
breaker. Tag or lock out the service breaker to prevent acci-
dental or unauthorized energizing of the machine.
2. Ensure that incoming water to the machine is
secured either by use of a shut-off valve or disconnecting the
incoming water line.
3. The unit must be drained completely with the drain
stopper removed (if applicable).
4. Remove any and all access covers.
TOOLS REQUIRED
The following tools may be needed to perform this
maintenance evolution:
1. 3/8” Nutdriver
2. 7/16” Combination Wrench
3. Needlenose Pliers
4. Phillipshead Screwdriver
5. Flathead Screwdriver
6. Ratchet with 1/2” Socket
TIME REQUIRED
It is estimated that it will take (1) person sixty minutes
to perform this task, not including all of the items indicated in
the section entitled “PREPARATION”.
IMPORTANT NOTES
1. Read these instructions thoroughly before
attempting this maintenance task. Become familiar with the
parts and what actions need to be taken. This will save time in
the long run!
2. These instructions are shown using a Tempstar
model dishmachine. However the steps provided should work
for models such as the JP-24 as well.
STEPS
1. Some models, such as the Tempstar pictured below, will
require that the thermostat bracket removed from the heater.
Using a ratchet, extension and 1/2” socket, remove the nuts
and lock washer holding the bracket on.
2. With the thermostat and thermostat bracket safely out of the
way, use a 7/16” combination wrench to loosen and then
remove the imperial brass fitting holding the probe in.
3. Remove the wires from the old thermostat. It may be nec-
essary to use the needlenose pliers to accomplish this.
4. Remove the thermostat bracket mounting nuts with the
7/16” nutdriver.
Removing the thermostat bracket/heater nuts.
Removing the thermostat bracket.