lancer Delta-600 R-290, Operation Manual

17

Checking the Normal PCB Operation

THE ELECTRONIC ICE BANK CONTROL (EIBC)

Agitator

Condensor

Condensor

Compressor

Carbonator

Ice Bank Probe

Carbonator Probe

Agitator

24 VAC

LED DETAIL 

SCALE 4 : 1

LED 2 - RL2 - Compressor Speed HIGH /LOW

LED 3 - RL1 - Compressor ON / OF

F

LED 7 - RL6 - Agitator Speed HIGH / LOW

LED 6 - RL5 - Agitator ON / OFF

LED 5 - RL4 - Condensor Speed HIGH /LOW

LED 4 - RL3 - Condensor ON / OFF

Terminal block has ac line voltage and, when servicing the unit, should be covered with tape. Tape should cover bare 

electrical connections to prevent electrical shock.

! 

WARNING

1. 

Turn power OFF or insure that power has been 

disconnected from dispenser

2.  Disconnect leads from the terminal block that connect to the 

PCB, noting their specific location for re-connection.

3.  Disconnect both the Ice Bank probe (J6) and the  

Carbonator probe (J3) (if equipped) connections from board.

4. 

Use a short copper wire, paper clip, or other means to short 

the Ice Bank probe terminals (J6) on the PCB by touching all 

three (3) pins together.

5.  Set multimeter to AC Voltage.
6.  Reconnect power or turn dispenser ON. A green LED will be 

blinking every second upon startup.

7.  Observe time and check voltage of the PCB connections:

8. 

Turn electrical power OFF for 15 seconds and then back ON 

again to reset Carbonator timer. Again, measure the voltage 

of the PCB connections

• 

Terminal 1 and 2 on header J21 (Carbonator): During 

the first 2.5 to 3.5 minutes there should be a line 

voltage reading. After 2.5 to 3.5 minutes, there should 

be NO voltage reading.

• 

Terminal 1 and 2 on header J18 (Compressor): During 

first 4 to 6 minutes, there should be NO voltage 

reading. After 4 to 6 minutes, there should be a line 

voltage reading. 

• 

You should be able to hear a “click” sound of the relay 

closing when the time delay ends.

• 

Terminal 1 and 2 on header J21: There should be a line voltage reading. 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 1 and 2 on header J21. There should be 

NO

 continuity.

9.  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 64-5132).