3033-007B Section 7: Milk System and Refrigeration Unit
Concordia Xpress Technical Support Manual 7-5
2900-300B
Milk System Capabilities
The Xpress milk system produces steamed milk at a rate of
approximately 16.3mL per second up to 170°F (76°C) and dry
cappuccino foam at a rate of approximately 10.4 mL per second up to
160°F (71°C).
A Common Milk Timing Mistake
A common mistake made when adjusting the milk volume is adjusting
the timing for the incorrect drink. There are two reasons why this is so
common;
1. There are 52 individual milk times that can be adjusted in the
Xpress.
2. The SHOT SELECT settings can alter what milk time is used for
a beverage.
EXAMPLE: The SHOT SELECT for a large latte is set to double.
In this scenario, changing the milk time for LARGE LATTE will have no
effect on the drink the machine will produce. The milk timing must be
changed via the MILK TIMINGS - HOT > DBL LG LATTE.
Air Gate Valve Assembly
The purpose of the air gate valve assembly is to allow a regulated supply
of air to mix with the milk during the production of a milk-based drink.
The cappuccino gate valve, cappuccino air purge valve, and latte air
purge valve are controlled by software, and the latte air gate valve is
controlled by the milk pump.
The air gate valve assembly consists of two air gate valves and two air
purge valves. During a latte drink pour, the latte air purge valve and latte
air gate valves are used; and during a cappuccino drink pour, both
assemblies of valves are used.
The air gate valve allows or stops air flow from the adjacent air purge
valve. The air purge valve directs regulated air through the air vent
needle when milk is poured or through the top port to purge residual milk
after the production of a milk-based drink.
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