Cable Gland; Refitting The Detector Cover - GasTech D-Guard2 Operator's Manual

9.6.6

Cable Gland

The cable gland fitted to the D-Guard
matched to the enclosure in terms of protection against dust and moisture ingress. In order to maintain the
integrity of the detector housing, it is vital that the cable gland is used properly. Proper use includes, feeding
only a single cable through it and that the cable sheath is at least 5.5mm in diameter. The gland nut must be
fully tightened to form a seal between the gland's sealing sleeve and the cable sheath. Multiple cable feeds
through the gland and/or improper tightening of the gland nut can result is water ingress into the enclosure.
The presence of water within the enclosure may cause extensive damage to the electronics, resulting in a
dangerous system failure and voiding of product certification and warranty.
9.6.7

Refitting The Detector Cover

Once the electrical connections have been made to the instrument, the front cover (lid) must be refitted
correctly to maintain the IP66/68 ingress protection rating.
The enclosure base is fitted with a sealing gasket that is located in a groove that runs around the perimeter of
the opening.
Before replacing the cover, check that the gasket is present and seated correctly in the groove. The gasket must
not be twisted, stretched or out of the groove at any point.
If the lid is replaced onto a faulty or misaligned gasket, the ingress protection is likely to be compromised with
resulting instrument failure possible.
Align the cover with the base section and slowly tighten up the four corner screws.
Initially tighten the four screws loosely so the lid just grips the gasket in the enclosure base.
Proceed to tighten each of the four screws by just one or two turns at a time, continually moving
from one screw to another until all screws are fully tight. Doing this will help to keep the gasket flat
and evenly positioned as the lid is tightened up. If each screw is tightened individually, uneven
pressure may be applied to the gasket resulting in a less than perfect seal.
2
detectors is a 20mm type rated to IP66 and IP68. The gland rating is
24
2
D-Guard