3-1
COMPONENT TESTING
Before testing any of the components, perform
the following checks:
• The most common cause for control failure is
corrosion on connectors. Therefore, discon-
necting and reconnecting wires will be nec-
essary throughout test procedures.
• All tests/checks should be made with a VOM
or DVM having a sensitivity of 20,000 ohms-
per-volt DC, or greater.
• Check all connections before replacing com-
ponents, looking for broken or loose wires,
failed terminals, or wires not pressed into
connectors far enough.
• Voltage checks must be made with all con-
nectors attached to the boards.
• Resistance checks must be made with power
cord unplugged from outlet, and with wiring
harness or connectors disconnected.
ELECTRICAL SHOCK HAZARD
Disconnect power before servicing.
Replace all panels before operating.
Failure to do so could result in death or
electrical shock.
WARNING
Refer to page 2-2 (wall hoods), or 2-10 (island
hoods), for the procedure for accessing the
blower motor.
1.
Disconnect the electrical power to the
hood.
2.
Disconnect the wires from the blower motor
terminals.
3.
Set the ohmmeter to the R x 1 scale.
4.
Touch the ohmmeter leads to the blue and
white motor wires. The meter should indi-
cate between 15 and 35
Ω
.
BLOWER MOTOR
Refer to page 2-7 (island hoods), for the proce-
dure for accessing the ballast transformer.
1.
Disconnect the electrical power to the
hood.
2.
Set the ohmmeter to the R x 1 scale.
3.
Touch the ohmmeter leads to the ballast
transformer wire ends at the wire nut and
the fluorescent lamp socket. The meter
should indicate between 18 and 28
Ω
.
BALLAST TRANSFORMER
(ISLAND HOODS ONLY)
Summary of Contents for 4317332
Page 1: ...TECHNICAL EDUCATION JOB AID 4317332 KAC 30 36 48 ISLAND AND WALL CANOPY RANGE HOODS ...
Page 4: ... iv NOTES ...
Page 12: ...1 8 NOTES ...
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