Varec 2920, Инструкция по установке и эксплуатации, Страница: 19 / 194

2 Installation
Varec, Inc. 9
To Unpack the 2920 FTT:
1. Place the shipping container on a secure bench.
2. Open the shipping container, taking care not to damage the contents.
3. Carefully remove transmitter from the shipping container and place it on the bench.
4. Inspect the transmitter for shipping damage. Report any damage to the carrier.
5. Remove and discard the plastic conduit entry shipping plugs.
Note If the transmitter must be stored prior to installation, it should be repacked in its
shipping container and stored in a temperature- and humidity-controlled environment.
Becoming Familiar with the 2920 FTT
The 2920 FTT is housed within an explosion-proof enclosure. The cover is provided to permit
access to the 2920 FTT’s electronics (i.e., circuit boards). O-Ring seals are provided to prevent
moisture from entering the termination or electronics compartments.
The 2920 FTT housing provides an external grounding lug and 3/4-inch NPT conduit entries.
The conduit entries permit access to the 2920 FTT wiring connections.
Grounding the Equipment
Warning! The 2920 FTT must be grounded before communication and power connections
are made.
An external grounding lug is provided on the 2920 FTT. A connection from the ground lug to
earth ground must be made before any other wiring connections are made.
Note For proper operation of the 2920 FTT, a ground strap must be attached to the FTT.
Grounding through mounting kits or pipe coupling is not adequate.