CPG 351FFOP40N Manuale utente

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Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

REVISED 06/2022

Open Pot Fryers

¾"

NOTICE

This manual is for a certied service technician and should not be used by those who are not properly trained.

This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.

You should read this manual in its entirety and the specic repair you wish to do prior to starting the repair.

This will allow you to determine if you have the correct tools, instruments, and skills to perform the procedure.

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Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

Contents

Troubleshooting ..........................................3

Part Testing ..............................................4

Pre-Maintenance........................................4

Gas Combination Valve ..................................4

Gas Combination Valve Adjustments ......................4

Thermostat (200-400°F) .................................6

Thermostat Adjustment..................................6

High Limit Thermostat (450°F) ...........................6

Thermopile .............................................6

Burner Orices..........................................6

Thermostat Knob Post ...................................6

Part Replacement.........................................7

Gas Combination Valve ..................................7

Thermostat (200-400°F) .................................7

High Limit Thermostat (450°F) ...........................8

Thermopile .............................................8

Pilot Light ..............................................9

Burner Orices..........................................9

351ffop40l/N ....................................... 10

351ffop50l/N ....................................... 10

Wiring Diagram ........................................ 11

Parts Diagram .......................................... 12

351ffop40l/N ......................................... 12

351ffop50l/N ......................................... 13

User Manual

351CLCPG15NL, 351CLCPG24NL, 351CLCPG36NL,

351CLCPG48NL, 351CLCPG60NL, 351CLCPG72NL

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Trouble Shooting

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

PROBLEM POSSIBLE SOLUTION

Pilot light will not stay on

• Ensure gas is the correct type for the unit

• Ensure gas supply is turned ‘ON’

• Ensure gas supply is at the correct pressure

• Ensure pilot light orice is clean

• Ensure pilot light stays lit when knob is pressed

• Verify thermopile operation

• Check voltage strength of pilot light

• Check high limit thermostat

Burner will not turn on

• Ensure gas is the correct type for the unit

• Ensure gas supply is turned ‘ON’

• Ensure gas supply is at the correct pressure

• Ensure pilot light stays on during startup procedure

• Ensure combination valve knob is turned to ‘ON’

• Verify thermopile operation

• Check thermostat is turned ‘ON’

Burner will not turn o

• Check thermostat is turned ‘OFF’

• Verify thermostat operation

• Check thermostat adjustment

• Check gas combination valve is turned ‘OFF’

Oil leaking from fryer pot • Ensure drain valve is closed

• Ensure thermostat capillary wire plug is tight

• Ensure high limit thermostat capillary wire plug is tight

Oil not reaching temperature

• Check gas combination valve is turned ‘ON’

• Check that burners have a good ame when ‘ON’

• Check manifold pressure setting matches name plate on unit

• Check thermostat temperature dial setting

• Check thermostat adjustment is correct

Oil not staying at temperature

• Ensure thermostat probe is clean

• Check gas combination valve is tuned ‘ON’

• Check that burners have a good ame when ‘ON’

• Check manifold pressure setting matches name plate on unit

• Check thermostat temperature dial setting

• Check thermostat adjustment is correct

Burner ames are small or weak

• Check gas supply pressure is correct

• Check manifold pressure setting matches name plate on unit

• Check gas combination valve is turned ‘ON’

• Check burner openings, wire brush clean if needed

• Check orice opening for each burner

• Check gas combination solenoid operation

Burner ame will not light or

maintain ame

• Check gas combination valve is turned ‘ON’

• Check gas supply pressure is correct

• Check manifold pressure setting matches name plate on unit

• Check thermostat temperature dial setting

• Check thermostat adjustment is correct

• Check gas combination solenoid operation

Burners are producing a black soot • Ensure correct gas is supplied

• Ensure correct ventilation is set up

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Part Testing

CAUTION: Components Can Be Hot

Follow these pre-maintenance steps before servicing

your Cooking Performance Group Floor Fryer

PRE-MAINTENANCE:

1. Turn thermostat to the “OFF”

position (Fig. 1)

2. Turn knob, on combination gas valve,

to the “OFF” position, align with

“RED” dot (Fig. 2)

3. Turn off gas supply to unit (Fig. 3)

(Supplied by others)

4. Allow unit to cool as needed

GAS COMBINATION VALVE:

• Thermopile voltage with pilot light on

= 250 - 750 millivolts DC with thermostat

in “OFF” position (Fig. 4)

• If too low, adjust pilot light ame strength,

see below

• Knob in “ON” position, Thermostat in “ON”

position, coil voltage should be higher than

120 millivolts

• If the coil voltage is below 120 millivolts DC,

replace combination valve

GAS COMBINATION VALVE

ADJUSTMENTS:

Adjusting Pilot Light Strength

1. Remove screw cap covering pilot adjustment

screw, located next to the pilot light gas hose,

with a at head screwdriver (Fig. 5)

2. With a small at head screwdriver, turn the

adjusting screw to increase or decrease pilot

light strength as needed

Counterclockwise = Increase

Clockwise = Decrease

3. Reinstall cover cap when correct strength has

been reached

Pilot light strength check

1. Pilot light should have a minimum

millivolt reading of 250, 500 or more is

recommended (Fig. 6)

FIG. 3

FIG. 5

FIG. 4

FIG. 6

FIG. 1 FIG. 2

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

User Manual

351CLCPG15NL, 351CLCPG24NL, 351CLCPG36NL,

351CLCPG48NL, 351CLCPG60NL, 351CLCPG72NL

www.cookingperformancegroup.com 5

Manifold pressure check

1. With Thermostat in “OFF” position and gas

combination valve in the “OFF” position

2. Remove pressure tap plug from manifold with

7/16” wrench (Fig. 7)

3. Install tting for manometer, ensure there

are no gas leaks

4. With manometer ready, ignite the pilot ame and

turn knob on gas combination valve to the “ON”

position

5. Turn thermostat temperature knob ‘ON’ to ignite

burners, ensure oil is covering burner tubes inside

fryer pot

6. Manometer should read

4” of W. C. for natural gas and

10” of W. C. for propane

7. Use thread sealing compound or tape when re-

installing plug

8. Check connections for gas leaks

Adjust manifold pressure, if needed. Ensure

incoming gas pressure matches name plate on unit

1. Remove cover cap with at head screwdriver

(Fig. 8)

2. Use at head screwdriver to turn adjusting screw

Clockwise = Increase

Counterclockwise = Decrease

3. Reinstall cover cap when correct pressure has

been reached

FIG. 7 FIG. 8

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

. www.cookingperformancegroup.com6

THERMOSTAT (200-400°F)

• Audible click can be heard when turned

‘ON’ / ‘OFF’

• If no click can be heard - Replace Thermostat

• Disconnect wires from thermostat, check continuity

of thermostat: OFF = No continuity / ON =

Continuity

• Replace if any checks fail

THERMOSTAT ADJUSTMENT

Thermostat is set at the factory and should maintain

temperatures within 10°F

Recalibrate if needed : if done more than

once, replace

1. Remove Thermostat dial from shaft (Fig. 31)

NOTE: Be careful not to rotate the dial as that will

change the temperature

2. Hold the dial shaft, “B” so it does not move

3. While holding dial shaft, “B”, turn calibration

screw, “A”

Clockwise = Decrease Temperature

Counterclockwise = Increase Temperature

4. Replace dial and allow unit to operate and

temperature to stabilize

5. Re-adjust if necessary

6. When done adjusting, seal calibration screw with

glyptol paint or similar product

7. Reinstall thermostat dial

HIGH LIMIT THERMOSTAT (450°F)

• Remove wires from high limit thermostat

• Continuity can be checked across wire connections

• If no continuity, replace high limit thermostat

• If high limit cools, continuity may be found, check

oil temperatures

• High limit thermostat should not ‘OPEN’ under oil

temperature of 425° F

THERMOPILE

• When heated by pilot light, thermopile should

support 250 millivolts to 750 millivot (500 millivolts

or higher is recommended)

• Replace if millivolts are less than 250, and/or pilot

ame has been increased in strength

BURNER ORIFICES

• Burner with poor ames, large yellow tipped ames

or missing sections of ames should be cleaned

• Good Flame = almost completely blue with a light

blue triangle at the bottom center

• Clean the burner with a wire brush to remove any

clogs that may have formed

• If clogs cannot be removed, replace the burner

Thermostat Knob Post

FIG. 9 FIG. 10

Decrease

Increase

¼ Turn changes

temperature

18°F

Calibration

Screw (A)

Dial

Shaft (B)

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

User Manual

351CLCPG15NL, 351CLCPG24NL, 351CLCPG36NL,

351CLCPG48NL, 351CLCPG60NL, 351CLCPG72NL

www.cookingperformancegroup.com 7

GAS COMBINATION VALVE

1. Follow pre-maintenance steps on page 4

2. Remove wiring from combination

valve for thermostat and thermopile

connections (Fig. 11A)

3. Remove pilot light gas hose connection

(Fig. 11B)

4. Remove pipe unions from outlet and inlet side of

valve (Fig. 12A & B)

5. Remove inlet and outlet pipe sections from valve

6. Installation is reverse of removal with thread

sealant

7. Check for leaks with leak detection

solution or device

8. Verify correct manifold pressure during burner

operation, check name plate

THERMOSTAT (200-400°F)

1. Follow pre-maintenance steps on page 4

2. Pull thermostat control knob from front of

thermostat, replace control knob if necessary

3. Remove 2 Phillips screws from the front mounting

bracket (Fig. 13)

4. Remove wiring from thermostat, note locations to

move to new thermostat

(Fig. 15)

5. Pry apart holding tongs on the bracket inside the

fryer pot holding the sensing probe. (Fig. 16)

6. Remove holding nut for thermostat capillary wire

from front side of fryer pot with 18mm wrench (Fig.

14)

7. Remove thermostat capillary wire and sensing

probe from fryer pot

8. Installation is reverse of removal, ensure sensing

bulb is mounted in tongs before tightening holding

nut

9. Use thread sealant on holding nut for capillary wire

and ensure no leaks after install

FIG. 11

FIG. 13

FIG. 15

FIG. 12

FIG. 14

FIG. 16

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

. www.cookingperformancegroup.com8

HIGH LIMIT THERMOSTAT (450°F)

1. Follow pre-maintenance steps on page 4

2. Remove 2 hex head screws from side of mounting

bracket, 8mm socket (Fig. 18)

3. Remove wiring from high limit thermostat, note

locations to move to new high limit thermostat

(Fig. 17)

4. Pry apart holding tongs on the bracket inside the

fryer pot holding the sensing probe. (Fig. 19)

5. Remove holding nut for high limit thermostat

capillary wire from underside

of fryer pot with 18mm wrench (Fig. 20)

6. Remove high limit thermostat capillary

wire and sensing probe from fryer pot

7. Installation is reverse of removal, ensure sensing

bulb is mounted in tongs before tightening

holding nut

8. Use thread sealant on holding nut for capillary wire

and ensure no leaks after install

THERMOPILE

1. Follow pre-maintenance steps on page 4

2. Remove wires from high limit thermostat that go

to thermopile (Fig. 17)

(White and Red color)

3. Remove two hex head screws that hold thermopile

bracket in place with an 8mm socket. (Fig. 23)

4. Remove compression nut from thermopile mount

with a 7mm wrench, do not lose compression nut

(Fig. 22)

5. Remove thermopile from mount by

pulling down

6. Slide on compression nut from old thermopile to

new thermopile

7. Ensure thermopile is fully seated in mounting

bracket before tightening compression nut

8. Installation is reverse of removal

FIG. 17 FIG. 18

FIG. 20

FIG. 22

FIG. 19

FIG. 21

FIG. 23

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

User Manual

351CLCPG15NL, 351CLCPG24NL, 351CLCPG36NL,

351CLCPG48NL, 351CLCPG60NL, 351CLCPG72NL

www.cookingperformancegroup.com 9

PILOT LIGHT

1. Follow pre-maintenance steps on page 4

2. Remove two hex head screws that hold the pilot

light bracket in place (Fig. 24 )

3. Remove pilot light compression nut from the

bottom of the pilot light ame deector with a

13mm wrench (Fig. 26)

4. Transfer thermopile to new pilot light mounting

bracket

5. Installation is reverse of removal

6. Check all connections for gas leaks

BURNER ORIFICES

1. Follow pre-maintenance steps on page 4

2. Remove hex head screw from rear burner bracket

with an 8mm socket. (Fig. 27; shown from rear

of unit)

3. Remove 2 hex head screws with an 8mm socket

from either side of the drain valve (Fig. 28)

4. Remove union on gas piping. (Fig. 29)

5. Drop burner tubing down to gain access to orices

6. Remove orices as needed. (Fig. 30)

7. Installation is reverse of removal

8. Check all connections for gas leaks

FIG. 24

FIG. 26

FIG. 30

FIG. 25

FIG. 27

FIG. 29FIG. 28

Service Manual

351FFOP40N, 351FFOP50N, 351FFOP40L, 351FFOP50L

. www.cookingperformancegroup.com10

Orice Sizes

351FFOP40L/N

351FFOP50L/N

LIQUID PROPANE ORIFICE SIZING

ORIFICE SIZE ELEVATION (FEET)

61 Sea Level - 2,000

62 2,000 - 4,000

63 4,000 - 6,000

64 6,000 - 7,000

65 7,000 - 9,000

66 9,000 - 10,000

LIQUID PROPANE ORIFICE SIZING

ORIFICE SIZE ELEVATION (FEET)

68 Sea Level - 2,000

69 2,000 - 5,000

70 5,000 - 8,000

71 8,000 - 10,000

NATURAL GAS ORIFICE SIZING

ORIFICE SIZE ELEVATION (FEET)

52 Sea Level - 3,000

53 3,000 - 8,000

54 8,000 - 10,000

NATURAL GAS ORIFICE SIZING

ORIFICE SIZE ELEVATION (FEET)

53 Sea Level - 2,000

54 2,000 - 7,000

55 8,000 - 10,000

Service Manual

351FFOF40N, 351FFOP40L, 351FFOP50N, 351FFOP50L

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