Vulcan VG30 User Manual download pdf (Page 19)

GAS BRAISING PANS - SERVICE PROCEDURES AND ADJUSTMENTS

F25121 (February 2003)

Page 19 of 32

10. Manually operate pan position/down limit switch

and observe pilot burner flame.

A. To increase pilot flame, turn the screw

counterclockwise. To decrease pilot flame,

turn the screw clockwise

11. Once the pilot flame

has been adjusted

correctly, release the pan position

/down limit

switch, turn the on/off switch off and replace the

adjustment screw cap.

12. Re-connect main valve (MV) lead wire from

terminal 1 on the ignition control module.

13. Lower the pan to the full down position and

check for proper operation.

FLAME SENSE CURRENT TEST

NOTE: You must complete the SPARK IGNITION

TEST prior to checking flame sense current.

If pilot burner lights but will not maintain flame,

perform the following test.

1. Turn the on/off switch off.

2. Access the ignition control module as outlined

under POWER SUPPLY BOX COMPONENTS

IN REMOVAL AND REPLACEMENT OF

PARTS.

3. Remove jumper wire between terminals marked

with an asterisk (*) & 8.

4. Set VOM to micro amp scale (DC) and connect

the black meter lead (-) to the asterisk (*)

terminal and red meter lead (+) to terminal 8.

5. Turn on/off switch on and set the temperature

dial to call for heat.

6. With pilot burner lit, meter reading should be

above 1.0 micro amp (minimum) and steady.

A. If reading is greater than or equal to 1.0

micro amp then flame sense current is

within tolerance.

1) Turn on/off switch off and replace

jumper wire.

B. If reading is less than 1.0 micro amp and

the condition of the ignitor/flame sense has

been verified as good, turn on/off switch

off.

7. Install a replacement ignition control module

and check for proper operation.

IGNITION CONTROL MODULE

TEST

1. Lower the pan to the full down position, turn the

on/off switch on and set the temperature dial to

call for heat.

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Vulcan VG30 User Manual Page 19

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