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Carry out a technical safety inspection on a regular basis, e.g. check if the power cable or housing
may have become damaged.
If there is reason to believe that the device can no longer be operated safely, then disconnect it
immediately from the power supply and secure it against any unintentional operation. Carefully
remove the power cable plug from the wall outlet and where applicable switch off the corre-
sponding circuit breaker fi rst.
It can be assumed that safe operation is no longer possible, if:
› there is visible damage to the device or power cable,
› the device no longer works,
› it has been stored for a longer period of time under unfavorable conditions
› or exposed to rigorous transport conditions.
Always adhere to the following safety instructions before cleaning and maintenance:
Live parts may be exposed, if the covering is opened or parts are removed.
› The device must be disconnected from the power supply source prior to service, maintenance
or repairs.
› Capacitors within the device may still carry voltage even though they have been disconnected
from all power supply sources.
› Repairs are only to be carried out by qualifi ed personnel, who are familiar with the hazards in-
volved and the relevant regulations.
› Please retain the original box and the packaging material in case you need to transport or send
the device out for maintenance at a later date. Please note that the device should be repacked
in the original packaging. The box and packaging have been especially developed for this device
in order to protect it during transport and against damage. Retain this instruction manual for
future reference and where required pass it along with the device if handed over to a third party.
It contains important information on initial operation and handling.
Keeping the external case clean
Never use volatile fl uids near the device, as for example insect spray. Avoid letting the device
come in contact with rubber or plastic products for longer periods of time. These could other-
wise leave marks behind.
Chapter 8
Maintenance and cleaning
Chapter 8
Maintenance and cleaning
Cleaning the device
Unplug the power cable before cleaning. Always use a soft and dry cloth to clean the unit’s ex-
terior. If the device is extremely dirty you can use a soft cloth, dampened with water or a mild
cleaning solution to clean. Never use any abrasive or harsh cleaning agents (e.g. alcohol, benzine
or thinners) as these could damage the controls, casing or any markings and labels found on the
device.
8
Maintenance and
cleaning
