Sutron P Line, User Manual

Page: 59 / 102

P Line Touch Panel Maintenance and Servicing
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5 Maintenance and Servicing
5.1 Maintenance Interval
The following maintenance intervals are recommended for this operating device:
5.2 Front Panel
Only use a damp cloth to remove any dirt from the front panel.
5.3 Fuse
A semiconductor fuse is used to protect the device. Once the fuse has been
tripped, the device must be disconnected from the supply voltage to allow the
semiconductor fuse to regenerate. At an ambient temperature of 20 °C (68 °F),
the regeneration takes approximately 20 seconds. The higher the ambient tem-
perature, the longer the regeneration takes.
5.4 Battery
The minimum battery life is 5 years, even under unfavorable operating conditions.
We recommend you change the battery approximately every 4 years as part of
the regular maintenance work.
Table 5-1 Maintenance interval
Maintenance work Interval
Changing the Battery 4 Years
NOTICE: Damage
The semiconductor fuse cannot be replaced!