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8. Disconnect the brewer from the power source and
remove the jumper wire from terminal 4.
If voltage is present as described, liquid level board
is operating properly, proceed to #9.
If voltage is not present as described, replace the
liquid level board.
LIQUID LEVEL BOARD AND LEVEL PROBE
FIG.12 LIQUID LEVEL BOARD AND
LEVEL PROBE
P2209.60
Location:
The liquid level board is located on the left rear of
the component bracket. The level probe is located on
the right rear of the component bracket.
Test Procedures:
1. Disconnect the brewer from the power source.
2. Disconnect the blue wire (T1) and the pink wire
(T4).
3. Check the voltage across terminals (T2) and (T3)
with the ON/OFF switch in the "ON" position. The
indication must be:
a) 120 volts ac for 120/208 volt, 120/240 volt and
380 volt models.
b) 208 volts ac or 240 volts ac for two wire 208
volt or 240 volt models.
d) 230 volts ac for two wire 230 volt models.
e) 220 volts ac or 440 volts ac for four wire 280
volt or 440 volt machines.
4. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to Wiring
Diagrams and check the brewer wiring harness.
5. Reconnect the blue wire to T1 on the liquid level
board.
6. Carefully connect a piece of insulated jumper wire
to terminal 4. Keep the other end of this wire away
from any metal surface of the brewer.
SERVICE (cont.)
7. Touching the free end of the jumper to the brewer's
frame simulates a "FULL" condition, preventing
jumper from touching the brewer's frame simulates
"NEED WATER" condition. Connect the brewer to
the power source, simulate the conditions in the
chart below while measuring the voltage between
T1 and T3 0n the liquid level board. Repeat these
several times. There is an approximate five second
delay for output to stabilize.
Voltage -
Jumper
Not Touching
Frame
120V
230V
208V or
240V
220V or
254V
120V
Model
120/208V &
120/240V - 3
wire w/ground
single phase
230V - 2 wire
w/ground
single phase
208V or 240V -
2 wire wground
single phase
280V or 440V -
4 wire w/ground
3 phase
380V - 3 wire
w/ground 3
phase w/
stepdown trans-
former
Voltage -
Jumper
Touching
Frame
0
0
0
0
0
0
0
10060 080900