3  –    2 Repair  Manual  RRE140/160/180/200/250  ©  BT
General safety rules
Electrical system
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
3.2  Electrical system
When working on the electrical system of the truck, remember the fol-
lowing:
• a short circuit may occur if metal objects come into contact with live 
connections. This can result in burns. So remove watches, rings and 
other metal jewellery before starting work.
• always use insulated tools while working on the electrical system.
• always switch off the truck's power supply before opening the hoods 
to the drive assembly and the electrical system.
• disconnect the battery when using electric welding equipment. The 
welding current may damage the battery.
• always remove the battery plug when carrying out maintenance on 
the truck, unless the instructions in this service manual state other
-
wise.
• blow electric motors clean using compressed air.
• clean electrical panels, electronic cards, connectors, contactors, so-
lenoid valves, etc. with a moist cloth and a cleaning agent that will 
not damage the part.
IMPORTANT
Risk of short-circuiting that may damage electrical components.
Do not break the warranty seal on the electronic cards.