Daisy 9017, User Manual

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Model 9017 Y/Z-Purge Operator Interface Daisy Data Displays, Inc.
February 2022 6 D011-000002
4.2 Pack-Seal Connection Instructions
A conduit seal is necessary for most equipment enclosures in hazardous areas. For Z-
purge, they are always required. Please consult your local code for other instances and
full details.
ALWAYS follow all NEC, NFPA, and local codes when installing conduit and pack-seals
in hazardous areas! It is very important that knowledgeable personnel, familiar with
national and local codes, supervise hazardous area equipment installations.
The sealing compound generally used for pack-seals is an inorganic, chemically setting,
magnesium oxide base material, which develops a slight expansion while hardening
into a porcelain-like body. Sealing Compound is supplied as a powder and need only
be mixed with water to apply. Approximately one ounce of sealing compound is
needed per cubic inch of space to be filled.
The sealing compound powder has a shelf life of six months when stored in unopened,
tightly sealed containers in a dry location at 70 ° F.
Any equipment accidentally splashed with sealing compound should be cleaned with
soap and water before the sealing compound cures.
Equipment Required
• Four PAC-Seal fittings, 1” NPT or 0.75” NPT for the Z-Purge, or sealing conduits. The PAC Seal
and conduit size selected will depend on the size and number of conductors, which must be
run to the unit. Check the NEC tables (Chapter 9, Table 4) to determine the conduit size
necessary
•
Conduit for electrical signals and for electrical power (separate runs), NEC and NFPA approved
for use in hazardous areas
•
NEC and NFPA approved flexible conduit if needed for difficult installations
• Fittings as required for permanent conduit installation NEC and NFPA approved for use in
hazardous areas
• Signal cables, power cables, and connectors as required to mate with the equipment within
the enclosure or cast aluminum box
• AC power switch for use in the safe area
Procedure
1. Threaded surfaces and pour locations should be cleaned with soap and water and thoroughly
dried before proceeding.
2. On a Z-purge system, no entryway is provided by DAISY for power and signal conduits. These
entries must be made by the end user. Select a point on the enclosure that matches well with
the location of the incoming conduit. Be careful to ensure that the point you have selected
is free from obstructions within the DAISY enclosure . Being careful to protect the internal
electronics, air pathways, and keyboard surface from flyings and other debris, drill, or punch
holes for the installation of the Pack-Seal fitting (1” NPT or 0.75” NPT, depending on
application) in the wall of the enclosure.