14
When checking the Component, be sure to turn the power off, and do voltage discharge sufficiently.
COMPONENT TESTING INFORMATION
5
!
CAUTION
Component
Test Procedure
Check result
Remark
1. Thermal cut off
•
Check Top Marking:
N130
Measure resistance of terminal
to terminal
Open at 266 ± 12
°
F
(130 ± 7
°
C)
Auto reset 31
°
F (35
°
C)
Same shape as Outlet Thermostat.
If thermal fuse is open must
be replaced
Resistance value
≒
∞
Continuity (250
°
F
↓
) < 1
Ω
•
Heater case-
Safety
•
Electric type
2. Hi limit Thermostat
(Auto reset)
Measure resistance of terminal
to terminal
Open at 257 ± 9
°
F
(125 ± 5
°
C)
Close at 221 ± 9
°
F
(105 ± 5
°
C)
Resistance value
≒
∞
Resistance value < 5
Ω
•
Heater case -
Hi limit
•
Electric type
3. Outlet Thermostat
( Auto reset)
•
Check Top Marking:
N85
Measure resistance of terminal
to terminal
Open at 185 ± 9
°
F
(85 ± 5
°
C)
Close at 149 ± 9
°
F
(65 ± 5
°
C)
Same shape as Thermal cut off.
Resistance value
≒
∞
Resistance value < 5
Ω
•
Blow housing -
Safety
•
Electric type
4. Lamp holder
Measure resistance of terminal
to terminal
Resistance value:
80
Ω
~ 100
Ω
6. Idler switch
Measure resistance of the
following terminal:
“
COM - NC
”
1. lever open
Resistance value < 1
Ω
2. Lever push (close)
Resistance value
≒
∞
5. Door switch
Measure resistance of the
following terminal
1) Door switch knob: open
Terminal:
“
COM
”
-
“
NC
”
(1-3)
Terminal:
“
COM
”
-
“
NO
”
(1-2)
2) Door switch push: push
Terminal:
“
COM
”
-
“
NC
”
(1-3)
Terminal:
“
COM
”
-
“
NO
”
(1-2)
Resistance value < 1
Ω
Resistance value
≒
∞
Resistance value
≒
∞
Resistance value < 1
Ω
The state that
Knob is
pressed is
opposite to
Open
condition.
