General; Opening The Msc-L; Commissioning And Maintenance; Tools - Honeywell Fusion4 MSC-L Installation & Operation Manual

2.2.4.1.1 Opening the MSC-L

WARNING! It is forbidden to open the MSC-L in an explosive
WARNING! Treat the flange surfaces of the lid and the housing
WARNING! Use non-sparking tools and explosion-proof testers.
WARNING! Make sure that the housing of the MSC-L is properly
2- 4
Safety - Safety Instructions for the MSC-L

2.2.4.1 General

hazardous environment, unless otherwise stated on
the safety label.

2.2.5 Commissioning and Maintenance

NOTE: The MSC-L can be mounted on the wall using frame
and bolts. The frame and bolts used must be capable
of holding four times the weight of the MSC-L being
mounted.
with care. Make sure that the flange surface is clean
and undamaged before closing.
This is required to maintain the CSA approval and it
is strongly recommended for all Ex approvals. The O-
ring must be present and undamaged.
1. National, local, and company regulations regarding installation must
be followed.
2. The bolts of the enclosure lid are captive (property class A2-70).
Contact Honeywell Enraf if you need to replace the bolts.
3. Before closing the lid, check that all grounding connections including
the grounding connection to the lid, are properly connected.
4. All wiring entries must be closed such that the approvals are not
invalidated. See section 4.2 - Gland Entries, to make sure that the
correct thread type is selected. For installations using cable glands,
always use compound barrier glands. For installations using
conduits, each conduit must be sealed within 18 inches of the
enclosure.
5. The limiting values of U
safe connections. See section 2.2.7.1 - Explosion Safety Limiting
Values, for information regarding the Explosion Safety Limiting
Values.

2.2.5.1 Tools

Use suitable explosion-proof tools (for example,
testing devices).

2.2.6 Electrical

2.2.6.1 Grounding

bounded to the Protective Earth (PE). See FIGURE
2-1 for external grounding of the MSC-L and FIGURE
2-2 for bonding any AC mains wire.
Fusion4 MSC-L
Installation & Operation Manual
must be respected for all non-intrinsically
m
Part No.: 4418309_Rev09
Honeywell