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Technical Information
A
Warning and Safety Instructions
1
General
Any repairs or maintenance performed by unqualified personnel could be
dangerous. All applicable laws, codes, regulations, and accident prevention
guidelines must be observed when serving, modifying, testing or maintaining
appliances. All repairs should be performed by a trained technician in strict
accordance with local, state and national codes.
Before any service work is started, the machine must be safely disconnected
from its power source. Even with the machine switched off, voltage may exist
on some components.
After work has been completed, as a matter of standard practice, a visual as
well as an operational check should be performed.
Note:
Before starting any service or repair work, remove all containers and the drip
tray with the spill guard grid from the appliance. Also empty the beans
container, lay the appliance on its right side and transfer any remaining
beans to an appropriate container.
2
Risk of Burning or Scalding
Some components may be very hot, such as heaters. Also, some
components may contain pressurized steam. Use caution when working on
these parts.
To protect from burns:
1. Allow the appliance to cool down for approximately one hour before
starting service or repair work, so that the heaters can cool.
2. In service mode, pump cool water through the heater for a few minutes to
shorten the cooling time. Use the component test for the pump. See
Table 001-5.
3
Touch Current Measurement
Touch current measurement should be carried out on all accessible
conductive parts that are not connected to ground.
Warning!
Touch current measurement may only be performed after the ground
connection of the appliance under test has been checked and found to be
satisfactory!
A defective appliance, as well as accessible conductive parts that are not
connected to ground, may carry dangerous voltages!
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CM6
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