User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 125
DIB-500 R4.1 Setup and commissioning
Connecting external alarms – optional, with VAC or alerting expansion
The top cover of the mounting frame is secured with five mounting screws.
Proceed as follows to remove the top cover of the mounting frame:
Preparation:
The voltage source on site must be de-energised.
The toggle switches must be set to the "Off" position ("downward" switch position).
The top cover of the equipment rack must have been removed.
The tools, auxiliary means and materials specified must be available, refer to
section 5.2 on page 90.
Carry out the following steps:
Keeping materials
Keep all the materials such as fastening screws in a safe place. You will need them
again.
Risk of electric shock
Electric shock when touching live parts. Hardware components in the equipment cabi-
net are live.
When performing work in the equipment cabinet, ensure that the voltage source on
site is switched off. This must have been checked with a voltmeter.
1. Loosen the mounting screws of the top cover of the mounting frame using a size 1
cross-head screwdriver, refer to Figure 5.26.
Figure 5.26 Mounting frame mounting screws
2. Remove the top cover of the mounting frame.
You have successfully removed the top cover of the mounting frame.