3M Dynapro ET 3170 Terminal Series B, Руководство по установке

Страница: 87 / 125

3M Touch Systems Proprietary Information
51
Maintaining
For terminal with AC fixed field wiring
To change the fuse of a terminal that has fixed field wiring, follow these steps:
1.
Turn off the power to the terminal at the source.
2. Find the fuse on the back of the terminal (Figure 5 on page 16).
3.
Release the cable tie fastening the insulator to the power cable.
4. Move the insulator close enough to the terminal block to allow access to the
fuse holder.
5.
Use a flat-blade screwdriver to turn the fuse holder counter-clockwise until
the fuse holder pops out.
6. Remove the fuse from the holder.
7.
Replace the fuse with another fuse of the same type. For fuse specifications,
see page 58.
8. Re-insert the holder and use the screwdriver to turn it clockwise until it
locks.
9.
Move the insulator up the cable to its original position and use a new cable
tie to secure the insulator to the cable.
Checking gaskets
Follow these guidelines to check and clean the gaskets on your terminal:
!
Make sure there is no debris on gaskets that will prevent a seal.
!
If debris needs to be cleaned from gaskets, do so gently, taking care not to
damage the gasket.
!
If gaskets are torn or damaged, return to 3M Touch Systems for servicing.
WARNING
To reduce the risks associated with electrical shock or fire which, if not avoided,
could result in death or serious injury and/or property damage:
n
When connecting power with fixed field wiring, the power cable must be double insulated.
A clear, flexible insulator (supplied) must cover the portion of the cable that is not double
insulated when connecting to a terminal strip connector.