Multi-Zone Gas Monitors
P/N: 3015-5074 Rev 11
47
SECTION 5. MAINTENANCE
WARNI NG:
Shock hazard! Always disconnect AC power before opening the enclosure of
the monitor.
WARNI NG:
The A C power ground wire must first be connected to the monitor’s ground
stud. Under no circumstances should this monitor be operated without a protective
ground. Doing so poses a potential shock hazard, and is a violation of electrical safety
standards applicable to this type of equipment.
WARNI NG:
Electrical installation should be performed by a certified electrician, and must
comply with all applicable NEC/ CEC and local electrical safety codes.
IMPORTANT:
The MZ monitor contains sensitive electronic components that can be easily
damaged. Do not touch nor disturb any components. Do not dislodge electrical wiring or
pneumatic tubing.
5.1. Replacement Parts Overview
Part Name
P/N
Description
Charcoal Filter
(Halogen
Monitor Only)
3015-3125
The charcoal filter removes refrigerant gas from the purge-air
stream during the purging process. Replace the charcoal filter
(P/N 3015-3125) approximately every 6 months, when a zero
filter fault occurs (fault code <0100>), or after the monitor has
been exposed to unusually high levels of refrigerant gas, such
as after an evacuation alarm.
Hydrophobic
Filter
0007-1650
The hydrophobic filter prevents water from entering the IR
detector. A zone flow fault will occur (fault code <0800>) if this
filter becomes blocked. Replace the hydrophobic filter as
required (P/N 0007-1650).
Air Line Tubing
0304-2743
0304-2742
The gas sample line and optional exhaust line should be periodically checked for
obvious signs of kinks, damage and contamination. Replace the tubing as required
(P/N 0304-2743 or 0304-2742 for Ammonia).
Line End Filter
Assembly
3015-3420
The gas-sample line filter and purge-line termination filters
prevent dust and dirt from entering the monitor. Both of the filters
should be periodically checked and replaced when there are
obvious signs of contamination.
•
A zone flow fault will occur (fault code <0800>) if the gas-
sample line filter becomes blocked
•
A purge flow auto will occur (fault code <1000>) if the purge-
line filter becomes blocked.
Remove the filter from the line and replace it with a new one.
Line End Filter
3015-2906
End-of-Line
Water Stop
3015-5512
The end-of-line water stops prevent contaminants and moisture
from entering the monitor. This filter should be periodically
checked and replaced when there are obvious signs of
contamination.
Summary of Contents for MultiZone
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