|
keatingofchicago.com
12
PREVENTATIVE MAINTENANCE CHART
TIME FRAME
OPERATOR/OWNER
AT LEAST
DAILY*
• Check lights and controls.
• Check that the oil is up to
“Fill Level” line.
• Clean all baskets.
• Drain, strain or fi lter oil.
AT LEAST
WEEKLY*
• Drain and clean fryer.
• Boil-out fryer.
AT LEAST
MONTHLY*
• Verify Thermostat settings.
• Test Hi-Limit control.
TIME FRAME
QUALIFIED SERVICE PERSONNEL
AT LEAST
YEARLY*
• Check burner fl ame color and
adjust air shutters.
• Disassemble fryer to clean pilot
and burner orifi ces and runner
pilot tube.
• Check and replace radiants.
• Calibrate thermostat.
*
High production facilities should be checked more often.
Contact the factory or a local service company to perform
maintenance and repairs.
HI-LIMIT CHECK BI-MONTHLY
The manual Hi-Limit test button can be used to test
the Hi-Limit Control by pushing and holding the but-
ton in until the fryer reaches the Hi-Limit temperature
(425°F). Place an accurate thermometer in the oil. If
the Hi-Limit Control doesn’t shut off the fryer between
425°F and 450°F, have it replaced.
LIMITED CALIBRATION
(Less than 25° difference)
You will need:
One screwdriver with 1/8" wide fl at blade
One accurate fryer thermometer
Figure 6
1. Set thermostat to desired frying temperature.
2. Allow thermostat to cycle three times.
3. Place an accurate thermometer in the oil at the
tip of the thermostat bulb. Left front corner of fryer
vessel at the High Limit Bulb is recommended.
NOTE:
Locate thermometer in same position for
every calibration.
4. If calibration of fryer is found to be less than 25°F
off, simply loosen four dial plate retaining screws,
rotate dial plate to match thermometer reading and
tighten screws. If it is more than 25°F off contact a
qualifi ed service company.
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.
Thermostat knob
removed to reveal
calibration screws
Thermostat Bulb
Positioning 10x11,
18 & Up
