FHF ExResistTel IP2, Operating Instructions Manual

Page: 21 / 30

Manual ExResistTel IP2 Page 21
•
If electrical connections must be carried through in the hazardous area, the
enclosure must be opened and closed as follows:
o
Remove voltage from the telephone.
o
Loosen the fastening screws from the upper case.
o
Remove the upper case and unfasten the keypad cable.
o
Make the connections while the telephone is open.
o
When the work is done, plug the keypad back on, and place the upper
case back on the lower part of the telephone.
Make sure the seal is correctly positioned and in perfect working order. Then
tighten the fastening screws in a diagonal pattern.
•
Only blind plugs and cable glands as prescribed by the manufacturer may be
used.
Should these points not be observed, the explosion protection of the telephone
cannot be guaranteed. The
telephone then poses a potential threat to the user’s life
and can cause the ignition of an explosive atmosphere.
3.5 Requirements
There are no requirements.
3.6 Type Label
Figure 6: Type Label ExResistTel IP2