Pitco 14R Manuale di programmazione

14R & 18 WKS

KENTUCKY FRIED CHICKEN

EQUIPPED WITH A FAST COOKING

COMPUTER: EM99 or VC210

FRONT PANEL SUPPLIED BY PITCO

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)

TROUBLESHOOTING

MANUAL

IMPORTANT FOR FUTURE REFERENCE

Please complete this information and retain this

manual for the life of the equipment:

Model #:________________________

Serial #: ________________________

Date Purchased: _________________

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)

SERVICE MANUAL

14R & 18 WKS

KENTUCKY FRIED CHICKEN

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

a. Turn Unitrol knob to “OFF" position.

b. Loosen set screw in base of burner casting.

c. Unscrew and remove two hex head screws at top of burner.

d. Unscrew and remove air collar from burner.

e. Lift burner up to clear top of burner fitting and remove from fryer.

f. Reverse procedure to remount burner.

1.2 TO CHANGE MAIN BURNER ORIFICE

a. Follow procedure in Section 1.1.

b. After burner has been removed, unscrew orifice with 3/8” wrench.

c. Screw in new orifice – tighten gas tight.

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.

d. Remount main burners.

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.

c. Unscrew and remove thermopile or thermocouple from connection on Unitrol.

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.

b. Unscrew tubing nut in fitting in base of pilot burner.

c. Unscrew fitting in the base of pilot burner and withdraw orifice from inside the fitting.

d. Insert new orifice and reverse procedure to re-assemble.

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 procedure in 1.4.

b. Unscrew and remove thermopile or thermocouple from pilot burner and bracket.

c. Replace with new thermopile or thermocouple.

d. Reverse procedure to re-assemble.

e. Tighten all screws and connections and test for gas leaks.

1.7 TO ADJUST PILOT FLAME

a. Make this adjustment with pilot burner lit.

b. Remove screw cap underneath pilot supply tubing connection to Unitrol valve.

c. Insert long handled screwdriver with 1/8” wide blade in adjusting screw slot inside this

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.

CAUTION DO NOT REMOVE ADJUSTING SCREW

e.Replace screw cap when desired flame size is obtained.

f. Replace pilot orifice if desired flame cannot be obtained by adjustment. See

procedure 1.5.

1.8 TO REPLACE LIMIT CONTROL

a. Turn Unitrol knob to “OFF.”

b. Drain all shortening from fry tank. Remove tube screen.

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.

e. Remove the two burners that are in front of the capillary connector fitting on the

bottom of the fry pot. See procedure 1.1.

f. Unscrew small hex nut in connector fitting of control to be replaced.

g. Unscrew large connector nut and withdraw capillary and bulb from fry tank.

h. Remove the two wires off the limit control terminals.

i. Unscrew and remove the two mounting screws in the limit control bracket and

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.

PITCO Frialator, Inc.

P.O. Box 501, Concord, New Hampshire 03301

TROUBLE POSSIBLE CAUSE REMEDY

Pilot flame burning yellow.

Draft may be pulling flame off

thermopile or thermocouple.

Pressure at burner manifold

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.

Gas pressure too low. 8

7Eliminate the draft.

Check millivoltage as above;

increase size of flame with

Unitrol pilot adjusting screw.

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.

SECTION 2S TROUBLESHOOTING CHART

Thermopile or thermocouple

producing insufficient

millivoltage.

Pilot will light but Unitrol

pilot gas valve will not hold

open automatically.

Check all wire connections.Loose wire connection in

millivoltage circuit.

Hold Unitrol knob (in PILOT

position) depressed for 1

minute or longer. Make sure all

air has been purged from gas

line.

Pilot thermopile or

thermocouple not hot enough

to generate required

millivoltage.

Check voltage at Unitrol with

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.

Pilot flame too small.

High limit control may have cut

out.

PITCO Frialator, Inc.

P.O. Box 501, Concord, New Hampshire 03301

10 10

Fryer temperature recovery

too slow.

Replace thermopile or

thermocouple

Defective thermopile or

thermocouple

Reset

SECTION 2S TROUBLESHOOTING CHART (Cont'd)

Turn handle counter clockwise

as far as it will go.

Unitrol valve handle not turned

to ON.

Defective probe.

Defective thermopile or

thermocouple

Replace magnet

Clean.

Minimum operating pressure:

Natural Gas- 4.0" w.c.;

Propane Gas- 10.0" w.c.

Replace baffles.

TROUBLE POSSIBLE CAUSE REMEDY

Low gas pressure.

Pilot flame lit but burners will

not light.

Pilot flame and main

burners cut off while

cooking.

Pilot will light but Unitrol pilot

gas valve will not hold open

automatically.

Float switch bulb off or stuck

down.

Install float switch bulb and new

clip.

Check electric supply circuit

Supply cord may not be

plugged in or switch may not be

turned on.

Replace probe.

Defective computer. Replace Computer.

Defective Unitrol. Replace Unitrol.

Dirty burners.

Hi-Limit tripped

Baffles in heat tubes may be

burned out.

Call factory to learn proper

sizes.

Incorrect burner orifices.

Carbon build-up on heat tubes. Clean fry tank and tubes.

Pilot flame is yellow. Pilot flame too large. Adjust Unitrol pilot adjustment

screw.

Carbon build-up on thermopile

or thermocouple.

Remove and clean.

PITCO Frialator, Inc.

P.O. Box 501, Concord, New Hampshire 03301

11Howling or screeching noise

when burners are on.

Main burner flames are

yellow.

SECTION 2S TROUBLESHOOTING CHART

Gas pressure too high. Adjust pressure regulator.

Loosen burner mounting

screws and line up burners.

Burner flames will not enter

heat tubes.

Dirt or burr on burner orifice. Clean orifice or replace.

Defective Unitrol.

Clogged vent cap on Unitrol.

Orifices are too large.

Main burners dirty.

Improper gas pressure.

TROUBLE POSSIBLE CAUSE REMEDY

Improper air collar adjustment

Main burners will not shut

off automatically.

Replace Unitrol.

Remove and clean cap.

Call factory to learn proper

sizes.

Remove burners and clean.

On natural gas adjust Unitrol

pressure regulator to 4.0" w.c

operating pressure. On

propane gas have gas supplier

adjust tank pressure to provide

10.0" w.c. operating pressure

at the fryer. (See Orifice and

Burner pressure chart)

Gas pressure too high/low.

Burners out of alignment.

a. Turn Vent on.

Orifices may be incorrect size. Call factory to learn proper

sizes.

Protect flue opening from

downdrafts, breezes or air

flows from blowers.

Downdraft on fryer flue

opening, or vent not turned on.

Remove and clean cap.

On natural gas adjust Unitrol

pressure regulator to 4.0" w.c

operating pressure. On

propane gas have gas supplier

adjust tank pressure to provide

10.0" w.c. operating pressure

at the fryer. (See Orifice and

Burner pressure chart)

NOTES

SECTION 3S PARTS LIST MODEL 14R & 18 WKS

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