Impinger I -–1000 Series Service Manual - Domestic 55
THE FOLLOWING ITEMS ARE USED IN THE MODEL 1030, 1046, 1047
IMPINGER OVEN (EXPOR T)
AIR PRESSURE SWITCHES - REPLACEMENT AND ADJUSTMENT
1. Remove control panel to p.
2. Disconnect wires from switch making note of wire number and location for reinstallation.
3. Remove air tube from switch assembly.
4. Remove switch from wire hanger.
5. Install new switch in rev erse order, make sure air tube is not blocked miss-aligned.
Adjust as needed.
To adjust the air pressure switch, remove snap on cover on the side of the s witch to
expose adjusting screw. To increase sensitivity, turn screw counter clock wise; to
decrease sensitivity, turn screw clockwise. Check for proper line voltage switch ing from
N.C. to N.O. as the air pressure switch closes.
GAS VALVE - REPLACEMENT AND ADJUSTMENTS
1. Remove control panel to p and front cover.
2. Disconnect the gas pip ing from the back of the unit.
3. Remove the four (4) scr ews from the incoming nipple mounting bracket.
4. Remove incoming nippl e.
5. Disconnect two (2) plugs , (1 ) 3 prong and (1 ) 4 prong - Note location.
6. Disconnect pipe union jus t above gas valve and remove assembly.
7. Reassemble in revers e order (check all pipe fittings for leaks). After assembled, check
for proper adjustment of gas pressure switch, 8.8 on dial for natural gas, 23 for L.P. Gas
and 4.5 for town gas.
8. Check and adjust m anifold pressure. Remove pressure tap located in gas piping above
the gas valve prior to the burner orifice and install manometer . Adjustm ent screw is
located on the front of the valve, remove plastic cap and adjust as needed: 3.5 " W.C. for
Natural Gas and 10" W.C. for L.P.
9. Check gas filter b y removing cover plate (located on either side of valve). Remove four
(4) screws and slide filter out of valve housing and inspect. Reassemble in re verse
order and check for leaks around cover.
+
-
1 2
gnd
3
3
2
gnd
FILTER
COVER
PLATE
FILTER
COVER
PLATE
PRESSURE
CONTROLLER
ADJUSTMENT
MANIFOLD
PRESSURE
ADJUSTMENT
OUTPUT
ELECTRICAL
CONNECTOR
ELECTRICAL
CONNECTOR
TOP VIEWSIDE VIEW