28
Installation MACH104
Release
 
07
 
07/2014
4 Maintenance and service
 When designing this device, Hirschmann largely avoided using wear 
parts. The parts subject to wear and tear are dimensioned to last longer 
than the lifetime of the product when it is operated normally. Operate this 
device according to the specifications (see on page 30 “Technical data”).
 Relays are subject to natural wear. This wear depends on the frequency 
of the switching operations. Check the resistance of the closed relay 
contacts and the switching function depending on the frequency of the 
switching operations.
 Hirschmann are continually working on improving and developing their 
software. Check regularly whether there is an updated version of the soft-
ware that provides you with additional benefits. You find information and 
software downloads on the Hirschmann product pages on the Internet 
(www.hirschmann.com).
 Depending on the degree of pollution in the operating environment, check 
at regular intervals that the ventilation slots in the device are not 
obstructed.
Note: You will find information about the complaints and returns procedures 
in the Internet under 
http://www.beldensolutions.com/en/Service/Repairs/index.phtml .