Bosch Appliances HGS236UC, HGS246UC, HGS256UC, HGS247UC Flame Characteristics, Test/Adjust Fmameo

7.Test for Gas Leaks.

Leak testing is to be conducted by the installer according to the instructions given in this section,

Turn on supply line gas shut off valve, Apply a non-corrosive leak detection fluid to all joints and fittings in the gas connec- tion between the supply line shut-off valve and the range, Include gas fittings and joints in the range if connections were disturbed during installation. Bubbles appearing around fittings and connections indicate a leak.

If a leak appears, turn off supply line gas shut-off valve and tighten connections. Retest for leaks by turning on the supply line gas shut-off valve. When leak check is complete (no bubbles appear), test is complete. Wipe off all detection fluid residue.

NEVERCHECKFOR LEAKSWITH A FLAHE.
O NOT CONTINUE TO THE NEXTSTEP UNTIL ALL LEAKS I
ARE ELIHINATED.	j/

If the flame is completely or mostly yellow, the corresponding air shutter and/or the orifice must be adjusted. Verify that the orifice is all the way tightened. If the flame is still yellow, adjust the air shutter. After adjustment, retest.

Note; With LP use, some yellow tipping on outer cones is normal.

All burners must also be inspected for carryover. The flame should completely surround the burner. If the cooktop burners do not carry over, the bypass jet must be adjusted (See step 4, page 4). If the broil or bake burner does not carry" over, adjust the corresponding air shutter (see steps 10 and 11, below and next page).

Figure 7

Flame Characteristics

Yellow Haines:

Further adjustment is required.

Yellow Tips on Outer Cones:

Normal for LP Gas.

8.Test Electric Ignition°

Test Cooktop Burner Ignition, Select a rangetop burner knob. Push down and turn to the flame symbol. If the ignitor/spark module is operating correctly, it will click. Once the air has been purged from the supply lines, the burner should light within four (4) seconds. After burner lights, turn knob to the off position.

Test each rangetop burner in this fashion.

Test Broil Burner Ignition, Set cooking mode to Hi Broil. The burner will ignite after 30-75 seconds.

Test Bake Burner Ignition, Set the oven to bake at 350° R After 30-75 seconds, the burner will ignite. The burner will stay lit until the 350° F is reached and then shut off. From this point forward, the burner will cycle on and off to maintain the temperature.

Call Bosch Service ([8OOo944o2gO4} if: 1, Any of the burners do not tight,

2.The broil burner or bake burner does not stay lit,

3.The bake burner does not cyde,

Soft II}[ue Flames:

Normal for Natural Gas.

11}, Adjust l}roi[ Burner Air Shutter (if nec-

essary)

Adjust Air Shutter, The air shutter is located on the back end of the broil burner. Loosen screw and turn shutter. Close the shutter if the flame is lifting or blowing or not carrying over; Open the shutter if it is too yellow. (See Figure 8). Tighten

SCreW.

Figure 8

Broil Burner Air Shutter

Shutter Screw

More Open:

%ess Yellow Flame

9. Test/Adjust Fmameo

The combustion quality of the flame for each burner must be visually inspected. If your range is a gas range, the bake burner and broil burner flames must also be visually in- spected. The flame should be blue with yellow tips. It

should carry over, or surround, the entire burner and should not lift or blow offthe burner.

To inspect, turn the burner on. See Figure 7 for appropriate flame characteristics. To view the bake burner, the oven bottom cover must be removed; remove two rear thumb screws, slide forward and out.

More Closed: %ess Blue Flame _Hore Carryover %ess [i_ing or blowing