Olympus Post-Mix Service Manual
© 2002, IMI Cornelius Inc.
- 13 -
Publication Number: 750300229
M
ISCELLANEOUS
Front Illuminated merchandiser (Optional)
Turning off the valve keylock switch also turns off the merchandiser (refer to electrical diagram in refer-
ence section).
Plain Water Conversion (Optional)
The Olympus™ dispenser can be configured for plain water dispensing at the factory or after installation.
If a different plain water configuration is desired, it can be changed in the field. The refrigeration deck
must be removed to gain access to the configurable water fittings (refer to the plumbing diagram). Dis-
connect the fittings (if so equipped) by pushing the collar. Reconnect the fitting by inserting the tubing into
the fitting.
Electronic Control Board Function
An integrated circuit board and microprocessor are used to control the electrical functions of the Olym-
pus™ beverage dispenser. Functional features of the control board include:
• Ice bank control with compressor start-up protection
• Carbonator control with continuous run protection
• LED diagnostics
Inputs to the control board include line power, the ice bank position sensor, and carbonator water level
sensor.
Switched outputs from the circuit board include the compressor, agitator motor, condenser fan
motor, and carbonator pump (refer to electrical diagram in reference section).
Ice Bank Control
The ice bank control operates the compressor and condenser fan motor to control the size of the ice
bank. The control board will not restart the compressor until after the compressor has been off for at least
3 minutes to allow the refrigeration system pressures to equalize.
Carbonator Control
The carbonator control operates the integral carbonator pump to maintain the water level in the carbon-
ator tank within pre-established limits. A programmed timer shuts down the carbonator pump motor if it
operates continuously for more than 3 minutes. This prevents the carbonator from running continuously if
there is a water leak or loss of water supply.
Voltage Cutout Protection
The control board monitors the input line for high and low voltage conditions. If the voltage is outside of
the acceptable range, the control will not allow certain operations (to protect motors from damage).