Crane Merchandising Systems COTI, Техническое руководство

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10.3 System Drain Down - Espresso Machines Only
Should it become necessary for the engineer to do any work on the Espresso water
system it is very important that the following sequence is followed to ensure safe working
as well as correct system fill and heating when the machine is powered up.
10.3.1 Cooling down the Espresso system
1. Open the front door of the machine. Using the service keypad located in the rear
of the door press the
‘ Machine Cool Down ’ button (10) to ensure the system is
cooled. Approximately 600ml of cold water is flushed through the system and out
to the waste bucket.
Important: Pressing button 10 also informs the machine software that the
Espresso system has been drained ensuring that the Espresso system will
automatically fill before heating on power up. This is very important and must not
be overlooked.
2. Once the Espresso system has been cooled the LCD will display the message
‘ Machine cooled ’ and water will stop pumping through the system. Remove the
waste bucket and empty the contents before re - fitting to the machine. Ensure all
pipes etc. are refitted correctly into the bucket.
10.3.2 Draining down the module
Draining down the module allows the engineer to safely work on system components. It
may also be necessary to do this for transit purposes.
N.B. A cool down cycle MUST be carried out before draining the module.
1. Remove the lower cover from the module to
expose the boiler blanking plug (3). Hold the
collar and remove the plug. Attach a length of
silicone pipe to the outlet to act as a drain
tube and place the other end into a bucket.
2. When the module is completely drained,
remove the drain tube from the outlet.
Replace the blanking plug (3) and lower
cover
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