Technical Information
12
G 1xxx/G 2xxx
A Warning and Safety Instructions
1 General Information
Danger!
 The low voltage produced in the electronic is not fully electrically
isolated from the power supply. If power supply connection is via a
reversible plug, and if this is reversed, then the live (phase) voltage is not
applied to terminal [1] or [L] at the terminal block. If a plug contact is then
disconnected, e.g., from the NTC temperature sensor, supply voltage is
applied to these plug contacts.
Note:
 Before starting any service work, disconnect the machine from the power
supply. Service and repair work should only be carried out by qualified
persons in accordance with all appropriate local and national safety
regulations.
 When carrying out measurements on an electronic connected to the
power supply, always use narrow measuring probes. Contacts are very
closely spaced and using thicker probes may cause short circuits.
2 Touch Current Measurement
Note:
 Touch current measurement should be carried out on all accessible
conductive parts that are not connected to ground.
Warning!
 Touch current measurement should only be carried out after the ground
connection of the machine under test has been checked and found to be
satisfactory!
 Dangerous voltages may exist on defective machines as well as on
accessible conductive parts that are not connected to ground!
Note:
 Touch current measurement should be carried out on the following
accessible conductive parts:
None.
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