Honeywell SPM, Техническое руководство

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SPM Single Point Monitor
SPM Technical Handbook 5-4
5.2.4 Electrical Connection
The Z-Purge enclosure incorporates an explosion-proof,
keyed power switch. The approved method of connecting
electrical power to this switch is through explosion-proof
electrical conduit (pipe) with tapered pipe threads and
all seals at all junctions. See diagram for proper wire
connections including the portions that are pre-wired
by Honeywell Analytics.
8
6
4
2
7
5
3
1
E
To Grnd
Stud
To Grnd
Stud
Pre-
Wired
Customer
Wired
Conduit wiring should be #14 AWG minimum and
connected to a 15A or 20A circuit breaker.
5.2.5 Opening Z-Purge Enclosure
Caution
Improper disassembly of the SPM enclosure can
cause internal tubing to become detached from
the sample inlet port (15) and result in loss of
monitoring. Before starting to connect alarms,
make sure you understand the correct way to
disassemble the enclosure. To prevent instrument
damage and to guard against possible loss of
monitoring, never allow the cover (29) to become
separated from the collar (30).
Follow these important guidelines in opening up
the Z-Purge enclosure to make output and alarm
connections:
• Make sure electrical power is disconnected. If
power had previously been on, follow the Z-purge
operation instructions (
Section 5.2.7
).
• The cover (29) and the collar (30) must always
remain connected together.
• During disassembly and reassembly, the
connection between the cover (29) and the collar
(30) must be secured by at least three cover
screws (20).
• To open the hinged collar (30) from the SPM
body (31), you must remove the collar fixing
screws (22) one at a time.
• Observe that the collar fixing screws (22) are
mounted behind the cover screws (20).
• In order to reach each collar fixing screw (22),
you must temporarily remove the cover screw
(20) and the retaining ring (21).
• After removing each collar fixing screw (22) and
retaining ring (21), replace each cover screw (20)
in order to keep the collar (30) and the cover (29)
securely connected.
To close up the instrument, follow these same guidelines
to install the collar fixing screws (22) and reassemble
the enclosure. Make sure that the cover (29) and collar
(30) stay connected throughout the entire procedure
and that the connection is always secured with at least
three cover screws (20).