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keatingofchicago.com
14
NOTE:
Locate thermometer in same position for
every calibration. Left front corner of fryer vessel at
the High Limit Bulb is recommended.
4. If temperature of fryer is found to be more or
less than 25°F off, remove the thermostat knob.
There are (4) screws holding the dial plate in place.
Loosen the screws and reset the dial plate to match
the thermometer reading.
DO NOT ADJUST THE THERMOSTAT SET SCREW - IT
VOIDS ANY WARRANTY ON PART.
THERMOSTAT BULB POSITIONING
BEFORE REPLACING, TEST THERMOSTATS
NOTE: Operational problems can easily be corrected
by thermostat bulb positioning.
Keating’s patented thermostat application is accurate
within 2°F of the dial setting between 250°F – 350°F.
This accuracy is attained only if the thermostat bulb
is placed properly against the heat transfer tube. To
quickly and accurately test for proper bulb placement,
a single thickness of writing paper should be pulled
through between the tube and the bulb with medium
resistance.
*
1. *
For 14" Gas Fryers:
• The end of thermostat bulb should touch the
burner tube.
2.
For 10x11", 18" & Up Gas Fryers:
• If the bulb is too loose, the paper will slip
through with little or no resistance. A fryer with
a thermostat bulb that is too loose will
overshoot.
Overshoot:
The thermostat takes a long time
to cycle and then misses its preset temperature
by 20°F - 40°F yielding a poor quality product.
• If the bulb is too tight, the paper will either not
pull through or it will tear. A fryer with a
thermostat bulb that is too tight will short cycle.
Short Cycle:
The thermostat will cycle rapidly
while the fryer is in the idle mode; the
temperature will be erratic.
REQUIRED TEST THERMOSTAT
Multimeter (for testing continuity)
CHECKING CONTINUITY WITH THE MULTIMETER
1. Rotate the thermostat shaft until an audible click
is heard.
2. Rotate the thermostat shaft left and right ten
times causing the switch to click on and off ten
times, while using the Multimeter to verify continuity.
3. If the switch does not show continuity during all
ten trials, replace the thermostat.
DISASSEMBLING THE THERMOSTAT WILL VOID THE
THERMOSTAT WARRANTY.
1. Set compression ring onto capillary end of bulb
fi nger tight, 1/2" from end of capillary.
2. Insert new thermostat bulb through control panel
back.
3. Apply oil resistant fl exible sealant onto compres-
sion fi tting thread before installing fi tting into fryer
vessel.
4. Position bent portion of bulb against far right heat
transfer tube and install compression fi tting snugly
into fryer vessel.
5. Adjust bulb so at least 2" of bent portion of it is
next to heat transfer tube and tighten compression
nut onto compression fi tting for fryer 10x11, 18 &
up. The end of thermostat bulb should touch the
burner tube for 14" fryers.
6. Replace burners.
7. Replace control panel back.
8. Slide back fabric shield over capillary and
carefully coil capillary. Avoid crimping.
9. Reconnect wires to thermostat body.
10. Replace two screws which hold thermostat body
to control panel.
11. Replace control panel.
12. Replace three retaining screws and washers
which hold dial plate in place.
13. Replace thermostat knob.
14. Connect electric power source. Turn on gas
and pilots.
15. Boil out fryer.
16. Refi ll fryer with oil to “fi ll level line”.
17. Start fryer, preheat and calibrate with
thermometer.
Thermostat Bulb
Positioning 10x11,
18 & Up