MEDC Ex FernTel IP - Manual (Page 10)

10 Manual FernTel IP Z2 UL
• 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 device.
o
Loosen the fastening screws from the keypad insert.
o
Remove the keypad insert and unfasten the keypad cable.
o
Make the connections while the device is open.
o
When the work is done, plug the keypad back on, and place the keypad
insert back on the lower part of the device.
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 device cannot
be guaranteed. The device then poses a potential threat to the user’s life and can
cause the ignition of an explosive atmosphere.