Part Number 020002777 10/11 4-1
Section 4
Maintenance
Maintenance Schedule
This section provides a list of periodic maintenance
tasks and the scheduled frequency required to ensure
the proper operation of your Multiplex dispensing
equipment. To ensure quality beverages, prevent
downtime, and reduce costs, these tasks must be
performed as indicated.
PERIODIC MAINTENANCE LISTED BY MAJOR
COMPONENTS
Dispensing stations
Daily (365 times per year)
• Take temperature of finished drinks. Pour off the first
and take the temperature of the second drink. The
proper temperature of drinks must be 40°F (4°C) or
less.
• Remove nozzles and diffusers from each dispensing
valve. Clean with soap and warm water (not hot).
Rinse with carbonated water and reinstall.
• Flush all dispenser drains. Pour hot water down
drains at closing.
Beverage conduits
Every 4 months (3 times per year)
• Inspect beverage conduits for damage. Re-insulate
and seal any un-insulated areas.
• Inspect floor chases and seal any open chase ends.
Air compressor
Monthly (12 times per year)
• Drain condensate water from air compressor tank.
Every 4 months (3 times per year)
• Inspect air compressor filter and replace if clogged.
Air filter must be replaced every 6 months.
• Inspect air compressor to verify cut-in at 70 psi (4.8
bar) and cut-out at 90 psi (6.3 bar). Adjust pressure
switch if necessary.
• Inspect system for air leaks and repair as required.
Refrigeration unit
Every 4 months (3 times per year)
• • Clean the refrigeration unit air-cooled condenser
using a vacuum cleaner. If equipped with water-
cooled condenser, verify the water discharge
temperature is at 105°F (41°C). Adjust water
modulating valve if necessary.
• Inspect water bath to verify water level is at the top of
stand pipe. If below, add water and repair water
makeup device. If excessive amount of water is
flowing over stand pipe, locate leak within bath and
repair.
• Inspect ice bank within the water bath to verify proper
size ice bank and clarity. Look for uniform, 2" to 4"
thick ice bank.
• Drain, clean, and refill water bath.
• Inspect agitator motor and ensure proper operation.
• Inspect the circulating motor/pump assembly. Clean
strainer and oil motor.
• Inspect the carbonating motor/pump assembly.
Clean strainer and oil motor.
• Inspect entire system for leaks and repair as
required.
Water filters
Every 4 months (3 times per year)
• Verify that incoming water pressure is not less than
40 psi (2.8 bar) or greater than 60 psi (4.1 bar). If
equipped with a water regulator, verify proper setting
of 55 psi (3.8 bar). Adjust if necessary.
• If pressure is low, inspect water filter cartridges to
ensure they are able to supply adequate water
pressure under normal system flow. Replace if
unable to provide minimum 20 psi (1.4 bar) under
load.
Syrup supply
Daily (365 times per year)
• Clean general area of syrup hookup with soap and
warm water. Rinse off all soap.
Every 4 months (3 times per year)
• Inspect syrup lines for proper flavor identification
labels. Replace labels if necessary.
• Disconnect syrup containers. Clean connector with
soap and warm water. Rinse with plain water and
reconnect to syrup containers.
CO
2 gas supply
Every 4 months (3 times per year)
• Inspect pressure setting at CO
2 high pressure
regulator. Verify proper 90 psi (6.3 bar) pressure
setting. Adjust if necessary.
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