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Scratch Calibration Check

2.

Remove gas valve vent tube. Clean and replace. See cleaning procedure in service

 

 

manual.

 

3.

Clean combustion air blower. See the service manual for cleaning procedure.

15

4.

Conduct recovery test as outlined on this card. The recovery test procedure varies

 

dependent upon the controller/computer model of your fryer.

 

5.

If the vat does not meet the recovery specification, adjust the combustion air blower to

 

 

 

obtain the proper recovery time.

 

 

COMBUSTION AIR BLOWER ADJUSTMENT

 

 

Note: Use a multimeter that measures DC microamps when making burner air

 

 

adjustments.

 

 

Note: Ensure proper gas pressure is set out of the gas regulator.

 

6.

Connect the multimeter in series with the white flame sensor wire on the ignitor.

 

7.

After fryer has completed the melt cycle, allow burner to operate for at least one minute.

 

8.

Check for a 2.5 to 3.5 microamp reading on the multimeter. This reading should show at

 

 

least 2.5 microamps. Adjust the combustion air-blower intake plate to obtain a

 

 

maximum microamp reading on the multimeter.

 

 

Note: Air adjustment must be made if a blue flame is observed through the burner

 

 

viewing ports, or if there are dark spots on the burner face. After 90 seconds of

 

 

continuous burner operation, the burner should glow bright orange-red. (For proper

 

 

colors, see the "BURNER COLOR COMPARISON CHART" located inside the door of

 

 

the fryer). If flame color is not correct, it is necessary to adjust the combustion air-

 

 

blower air intake-plate.

 

9.

To adjust the blower intake plate, loosen the locking nut(s) on the intake plate with a small

 

 

adjustable wrench.

 

10.

Adjust the plate opened or closed to obtain a maximum reading on the multimeter. When

 

 

observing the burner through the viewing ports, an orange-red glow should be seen on the

 

 

face of the burner. The ports are located directly above the spark ignitors.

 

11.

When a maximum microamp reading and an orange-red glow have been obtained, tighten the

 

 

intake plate locking nut(s) while holding the plate to prevent movement.

 

 

Note: A blue flame observed through the burner viewing ports usually indicates

 

 

insufficient air. Dark spots on the burner face indicate excess air.

 

12.

Recheck the recovery time as outlined on this card.

 

13.

If further combustion air adjustments are needed, repeat Steps 9 through 12 until the

 

 

recovery time specification is met.

 

14.

Repeat Steps 9 through 13 for each vat of the fryer.

 

15.

Scratch calibration check is complete. Check remaining fryers.

 

819-5432 NOV 05 Card 15

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Frymaster 819-5432 manual Combustion AIR Blower Adjustment

819-5432 specifications

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