6.
Replace knob and repeat steps 3 to 5 until
average temperature is within 25°F of set
temperature.
7.
Reseal adjustment screw to prevent movement.
8.
If thermostat cannot be calibrated, replace
thermostat as outlined under GRIDDLE AND
HOT TOP THERMOSTATS.
INFINITE SWITCH TEST (208V/
240V)
Certain procedures in
this section require electrical test or
measurements while power is applied
to the machine. Exercise extreme
caution at all times and follow Arc Flash
procedures. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
NOTE:
Refer to AI4007 in WIRING DIAGRAMS for
switch terminal locations.
1.
Lower the FRONT CONTROL PANEL to access
infinite switch for a French Plate.
A.
If checking infinite switch for the oven,
remove OVEN CONTROL PANEL.
2.
Connect a voltmeter to the output terminals H1
and H2.
3.
Reconnect power to machine.
4.
Turn knob to the desired setting.
5.
Compare the percentage of ON time to OFF time.
NOTE:
±7.5% tolerance allowable.
Knob
Setting
% on Time
Seconds
on
Seconds
off
Hi
100
ALL
0
Med.
48
15
15
Low
37
8
14
Knob
Setting
% on Time
Seconds
on
Seconds
off
Med. Low
28
7
24
Very Low
7
3
33
6.
If the percentage is not correct, replace the
switch as outlined under 3 HEAT SWITCH /
INFINITE SWITCH.
3 HEAT SWITCH TEST (480V)
Certain procedures in
this section require electrical test or
measurements while power is applied
to the machine. Exercise extreme
caution at all times and follow Arc Flash
procedures. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
NOTE:
Refer to AI4008 in WIRING DIAGRAMS for
switch terminal locations.
1.
Lower the FRONT CONTROL PANEL to access
3 heat switch for a French Plate.
2.
Reconnect power to machine.
3.
Check input voltage at L3 and L2 on the switch
terminals.
4.
Check for the correct output voltage at the output
terminals for all knob settings of the switch.
Knob Settings
L3 Input -
Output at
Terminal(s)
L2 Input -
Output at
Terminal(s)
High
1 & 3
2
Med
1
2
Low
1
3
5.
If the voltages are not correct, replace the switch
as outlined under 3 HEAT SWITCH / INFINITE
SWITCH.
EV Series Electric Ranges - SERVICE PROCEDURES AND ADJUSTMENTS
F45586 (0716)
Page 18 of 33
Содержание EV12 Series
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Страница 32: ...EV36 STANDARD OVEN 480V EV Series Electric Ranges WIRING DIAGRAMS F45586 0716 Page 32 of 33 ...
