Vulcan-Hart VBB1BF Service Manual Download Page 14

burner Fig. 30 or Infrared burner Fig. 31. Inspect the
following:

Gas orifice alignment - orifice should be centered
in the venturi opening and perpendicular to the
burner.

Check gas orifice for blockage or damage. If dirty,
clean with air or water only.

Verify gas orifice is correct for the altitude.

Ceramic-Radiant Burner Orifice

Fig. 30

Infrared Burner Orifice

Fig. 31

CONTROL VALVE

 Shut off the gas before servicing the

unit.

Inspect the control valve for smooth rotation,
noticeable wear and any possible damage. The
burner flame should increase smoothly as the valve is
opened (highest setting) and decrease smoothly as

the valve is being closed. When inspecting valve,
always apply a light amount of valve grease at the
base of the valve stem. See LUBRICATION. If valve
grease does not improve rotation of the valve, or
damage is found, replace the CONTROL VALVE as
outlined under REMOVAL AND REPLACEMENT OF
PARTS.

RACK SPRING TENSION

ADJUSTMENT

1.

Raise the rack lift assembly to its highest position
on stop bracket to relieve spring tension.

2.

Access spring tension adjusting nuts from the
front of broiler.

Fig. 32

3.

Tighten nut [1] to adjust rack spring tension.
Adjust both springs equally so there is
approximately 5/8" of thread above the nut.
Spring tension is properly adjusted when the rack
assembly can be comfortably raised and lowered
by the operator using one hand.

Fig. 33

4.

If additional rack spring tension is required,
tighten each nut an additional 2-3 turns and re-
check.

5.

Check for proper operation.

V-SERIES HEAVY DUTY BROILERS, DOUBLE DECK AND RANGE MATCH MODELS - SERVICE PROCEDURES

AND ADJUSTMENTS

F45548 (0715)

Page 14 of 16

Summary of Contents for VBB1BF

Page 1: ...tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Vulcan Service Technici...

Page 2: ...BURNER 8 INFRARED BURNER 10 GAS PRESSURE REGULATOR 10 RACK SPRINGS 10 SERVICE PROCEDURES AND ADJUSTMENTS 12 PILOT FLAME HEIGHT 12 CERAMIC RADIANT BURNER AIR SHUTTER ADJUSTMENT 12 REGULATOR ADJUSTMENT...

Page 3: ...ers Operations Manual sent with each unit The manual is also available online at www vulcanequipment com RACK POSITION AND GAS SETTING NOTE Infrared burner models must use the full gas setting knob fu...

Page 4: ...lly Assemble the parts and retain for future use on gas equipment Pipe tee sized for the gas line inlet connection and pipe fittings pipe nipples reducers etc for the connection as required Hose barb...

Page 5: ...must be checked for leaks Check with a soap and water solution bubbles Do not use an open flame Accessing Control Valve Upper Broiler double stack or single unit over range The side panel must be remo...

Page 6: ...ews at the rear that are securing the back panel 1 Fig 6 and side panel to broiler frame Arrows shown in Fig 6 are pointing to the rear screw locations for right side panel removal Fig 6 D Remove side...

Page 7: ...ilot tube fitting and remove the tube Fig 9 When disconnecting compression nut from the pilot tube fitting support the fitting to prevent damage to pilot tubing 5 Reverse procedure to install and chec...

Page 8: ...ach burner 3 Fig 12 There are 6 ceramic bricks for each of the 3 burners 18 bricks total Fig 12 5 Remove screws securing pilot tube mounting brackets 1 Fig 13 to burner support 2 Fig 13 Position pilot...

Page 9: ...nto the broiler grid Position 2 x 4 s underneath the burners near the front Fig 18 11 Adjust rack assembly to the middle position 12 Remove cotter pin from all three burners Fig 19 13 Grasp the bottom...

Page 10: ...flame Clean pipe threads and apply thread sealant that is suitable for use with propane gases NOTE Gas pressure regulator should be installed as close to the broiler inlet gas connection as possible 1...

Page 11: ...n springs Fig 24 3 Remove springs from the lifting arm mechanism and eye bolt 4 Reverse procedure to install 5 Perform RACK SPRING TENSION ADJUSTMENT V SERIES HEAVY DUTY BROILERS DOUBLE DECK AND RANGE...

Page 12: ...stics and excessive gas consumption may occur An air shutter on the front of the burner controls the gas mixer balance A yellow streaming flame on the burner is an indication of insufficient primary a...

Page 13: ...wise to decrease pressure until the proper gas pressure is achieved C Install the regulator closing nut D Turn gas supply off E Remove manometer and tee from gas line Clean pipe threads and apply thre...

Page 14: ...base of the valve stem See LUBRICATION If valve grease does not improve rotation of the valve or damage is found replace the CONTROL VALVE as outlined under REMOVAL AND REPLACEMENT OF PARTS RACK SPRIN...

Page 15: ...gas pressure 3 Control valve malfunction CERAMIC RADIANT BURNER CERAMIC RADIANT BURNER SYMPTOM POSSIBLE CAUSE Flame too yellow 1 Orifice incorrect size or dirty 2 Air shutter not adjusted correctly o...

Page 16: ...r not lighting properly or incorrect burner flame appearance due to clogged ports 1 Broiler with Infrared burner is located too close to a fryer or charbroiler and the grease laden air is causing burn...

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