Pitco 14R, 18 WKS Troubleshooting Manual
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #:________________________
Serial #: ________________________
Date Purchased: _________________
14R & 18 WKS
KENTUCKY FRIED CHICKEN
EQUIPPED WITH A FAST COOKING
COMPUTER: EM99 or VC210
FRONT PANEL SUPPLIED BY PITCO
TROUBLESHOOTING
MANUAL
PITCO FRIALATOR, INC
P.O. BOX 501
CONCORD, N.H. 03301
PHONE 603-225-6684
SERVICE DEPT. 603-225-5688
L20-310 R1 (02/15)
SERVICE MANUAL
14R & 18 WKS
KENTUCKY FRIED CHICKEN
CONTENTS
Section 1S Service Procedures
- Burner Flow Drawing
Section 2S Troubleshooting Charts
Section 3S Parts List
Section 4S Front Panel Bezel
- Orifice Tips & Burner Pressure
Section 5S Entrance Box
L20-310 R0 (02/15)
Pitco Frialator, Inc.
P.O. Box 501, Concord, New Hampshire
SECTION 1S SERVICE PROCEDURES
Parts can be identified from diagrams on Parts List page for each model.
1.1 TO REMOVE MAIN BURNER
Turn Unitrol knob to “OFF" position.
a.
b.
Loosen set screw in base of burner casting.
Unscrew and remove two hex head screws at top of burner.
c.
d.
Unscrew and remove air collar from burner.
e.
Lift burner up to clear top of burner fitting and remove from fryer.
Reverse procedure to remount burner.
f.
1.2 TO CHANGE MAIN BURNER ORIFICE
Follow procedure in Section 1.1.
a.
b.
After burner has been removed, unscrew orifice with 3/8” wrench.
Screw in new orifice – tighten gas tight.
c.
d.
Remount burner and air collar.
1.3 TO REPLACE HEAT TUBE BAFFLES
a.
Remove main burners: follow procedure in Section 1.1.a. through e.
b.
Baffles are fastened to the inside of the heat tube by a small tack weld on the right
hand front baffle support. Break leg away from weld with a chisel or solid steel bar.
c.
Remove old baffles and insert new ones in tubes in original position.
Remount main burners.
d.
1.4 TO REMOVE PILOT BURNER
a.
Follow procedure in Section 1.1 and remove main burner to the right of the pilot
burner.
b.
Unscrew and remove tubing nut from pilot tubing connection on Unitrol.
Unscrew and remove thermopile or thermocouple from connection on Unitrol.
c.
d.
Unscrew and remove the two screws holding the pilot to the bracket on the fry tank
and lift the entire pilot assembly out of the fryer.
1.5 TO CHANGE PILOT BURNER ORIFICE
a.
Follow procedure in 1.4.
Unscrew tubing nut in fitting in base of pilot burner.
b.
c.
Unscrew fitting in the base of pilot burner and withdraw orifice from inside the fitting.
Insert new orifice and reverse procedure to re-assemble.
d.
e.
Tighten all screws and connections and test for gas leaks.
Pitco Frialator, Inc.
P.O. Box 501, Concord, New Hampshire 03301
SECTION 1S SERVICE PROCEDURES (Cont’d)
1.6 TO REPLACE THERMOPILE OR THERMOCOUPLE
a. Follow pro
Unscrew and remove thermopile or thermocouple from pilot burner and bracket.
b.
c.
Replace with new thermopile or thermocouple.
Reverse procedure to re-assemble.
d.
e. Tighten all screws and connections and test for gas leaks.
1.7 TO ADJUST PILOT FLAME
a. Mak
b.
Remove screw cap underneath pilot supply tubing connection to Unitrol valve.
Insert long handled screwdriver with 1/8” wide blade in adjusting screw slot inside this
c.
pilot supply fitting.
d. Turn adjusting screw clockwise to decrease or counterclockwise to increase pilot
flame. Watch size of pilot flame while turning adjusting screw.
e
. Replace scre
f.
Replace pilot orifice if desired flame cannot be obtained by adjustment. See
procedure 1.5.
1.8 TO REPLACE LIMIT CONTROL
cedure in 1.4.
e this adjustment with pilot burner lit.
CAUTION DO NOT REMOVE ADJUSTING SCREW
w cap when desired flame size is obtained.
a. Turn Unitrol
Drain all shortening from fry tank. Remove tube screen.
b.
c.
Unscrew and remove the two screws in the limit bulb clamp on the heat tube inside
the fry tank.
d.
Take sensing bulb out of the clamp and straighten the capillary tubing.
Remove the two burners that are in front of the capillary connector fitting on the
e.
bottom of the fry pot. See procedure 1.1.
f.
Unscrew small hex nut in connector fitting of control to be replaced.
Unscrew large connector nut and withdraw capillary and bulb from fry tank.
g.
h.
Remove the two wires off the limit control terminals.
Unscrew and remove the two mounting screws in the limit control bracket and
i.
remove the limit control from the fryer.
j.
Unpack the new limit control and carefully unroll the capillary tubing and straighten it
out.
k.
Install the new limit control by reversing the procedure. BE CAREFUL NOT TO
BEND, KINK OR TWIST THE CAPILLARY TUBING SHARPLY. THIS WILL
DESTROY THE LIMIT CONTROL.
knob to “OFF.”
PITCO Frialator, Inc.
P.O. Box 501, Concord, New Hampshire 03301
SECTION 2S TROUBLESHOOTING CHART
TROUBLE POSSIBLE CAUSE REMEDY
Pilot will light but Unitrol
pilot gas valve will not hold
open automatically.
Pilot thermopile or
11
thermocouple not hot enough
to generate required
millivoltage.
22
millivoltage circuit.
Thermopile or thermocouple
producing insufficient
millivoltage.
High limit control may have cut
44
out.
Pilot flame too small.
5
Hold Unitrol knob (in PILOT
position) depressed for 1
minute or longer. Make sure all
air has been purged from gas
line.
Check all wire connections.Loose wire connection in
Check voltage at Unitrol with
33
millivoltmeter, holding pilot
flame on manually as in No. 1
above. Reading should be 500
+/-50 mv. for thermopile.
Reading should be between 25
and 35 mv. for thermocouple.
Check continuity across limit
control terminals with meter. If
limit control has cut off, check
at what temperature it cut off.
Check millivoltage as above;
5
increase size of flame with
Unitrol pilot adjusting screw.
Pilot flame burning yellow.
66
Draft may be pulling flame off
7
thermopile or thermocouple.
Gas pressure too low.
8
Remove and clean pilot and
thermopile or thermocouple;
decrease size of flame with
Unitrol pilot adjusting screw if
over 450 mv. Reading should
be 500 +/-50 mv. for
thermopile. Reading should be
between 25 and 35 mv. for
thermocouple.
Eliminate the draft.
7
Pressure at burner manifold
8
should be 4.0" w.c. for natural
gas and 10.0" w.c. for propane
with all equipment on line in
full operation. If this cannot be
maintained, consult gas
company.
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