Emerson Process Management 3420 Carbon Monoxide Alarm User Manual


 
Reference, Installation, and Operations Manual Section 3: Installation
3-9000-743 Rev S June 2013
Safety precautions using safety engineered swivel hoist rings 45
6. After installation of the hoist rings, always check that the ring rotates and pivots freely
in all directions.
7. NEVER attempt to lift the meter using only one hoist ring.
8. Always use separate slings to each hoist ring. NEVER reeve one sling through both hoist
rings. The slings must be of equal length. Each sling must have a load rating that equals
or exceeds the hoist ring load rating. The angle between the two slings going to the
hoist rings must never exceed 90 degrees or the load rating of the hoist rings will be
exceeded.
Figure 3-3 Ninety degree angle between slings
9. NEVER allow the slings to contact the electronics enclosure. Damage to the enclosure
may occur. If the slings do come in contact with the electronic enclosure then remove
the two bolts holding the enclosure to its base and temporarily remove the head from
the meter during the lifting operation. You will need to unplug the cable from J3 on the
Acquisition Module. Two screws hold this cable in place.