6. TROUBLESHOOTING THE LANCER ELECTRONIC ICE BANK CONTROL (EIBC)
6.1 CHECKING FOR NORMAL PCB OPERATION
A. Turn dispenser power OFF or insure
power has been disconnected from
dispenser.
B. Check 0.5 amp fuse condition (Fig 7).
If fuse is blown, trace cause of short
in valve wire harness and associated
24 VAC lines and replace fuse. If fuse
is good, continue with troubleshooting
of
PCB.
C. Disconnect leads from the terminal
block that connect to the PCB, noting
specific location for reconnection.
D. Disconnect both the Ice Bank Probe
(J2) and the Carbonator Probe (J3)
(if equipped) connections from the
board (Fig 6).
E. Use a short copper wire or paper clip
to short the Ice Bank Probe terminals
(J2) on the PCB by touching all three
(3) pins together.
F. Set Ohm test meter to measure for
continuity.
G. Reconnect power or turn dispenser On.
Observe time and check continuity of the
PCB screw lug connections (see Fig 6).
1. The following should be observed:
a. Terminal 3 to 4 (Carbonator): During the first 2.5 to 3.5 minutes, there should be
continuity. After 3.5 minutes, there should be
NO
continuity.
b. Terminal 2 to 1 (Compressor): During first 4 to 6 minutes, there should be
NO
continuity.
After 4 to 6 minutes, there should be continuity. Remove wire from J2 connector. There
should be
NO
continuity from 2 to 1.
c. You should be able to hear the “click” sound of the relay closing when the time delays
end.
H. Turn electrical power
OFF
for 15 seconds and then back
ON
again to reset Carbonator timer.
Again, measure continuity of the PCB screw lug connections.
1. Terminal 3 to 4: There should be continuity. Use a short copper wire, paper clip, or other
means to short the Carbonator probe terminals (J3) on the PCB by touching all three (3)
pins together. This should be done before the 2.5 to 3.5 minute time limit has elapsed.
Measure the continuity again between Terminal 3 to 4: There should be
NO
continuity.
I. If all the above work as noted, then the board is functioning properly. Remove tape and
reconnect board. If any non-conformities are found, the PCB must be replaced
(PN
52-1423/01).
COMP
RELAY
ICEBANK
PROBE
CARB
PROBE
CARB
RELAY
0.5 AMP
FUSE
CARB IN
24 VAC
CARB OUT
COMP IN COMP OUT
AGITATOR
RELAY
AGITATOR
AC OUT
AGITATOR
IN
PROGRAMMING
PORT
Figure 7
32
Summary of Contents for 9000 series
Page 33: ...NOTES 33...