3-22 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
Termination points for the Remote Calibration/Remote Backpurge input
signal, analog output signals, alarm relay contacts, and AC power will
vary, depending on whether the analyzer is mounted only on a backpan
or in a shelter, or if it is for use in a General Purpose or Hazardous Area.
Purged Analyzer (Hazardous Location) Applications
Install and connect a power-disconnect switch (breaker), rated for at
least 250 VAC, 3 A and certified for the hazardous location (to satisfy
local electrical codes, the switch must be certified by the local author-
ity for the appropriate hazardous location). The power-disconnect
switch (breaker) must be connected to and mounted near the analyzer,
in an easily accessible area. The switch (breaker) must be clearly la-
beled (e.g., “AMETEK Model 900 Analyzer Main AC Power Discon-
nect Switch”).
For safety reasons during maintenance, this switch allows the main
AC power to be disconnected from the analyzer prior to performing
service on the analyzer. This switch (breaker) is to be supplied by
the customer/end user.
Purged Analyzer (Hazardous Location) Applications
Use a soft, nonabrasive cloth to gently clean the joining surfaces
(flamepath) of the Disconnect Enclosure and its door. Close the door
and replace at least (1) M10 screw while completing the installation.
This will ensure the flamepath is not inadvertently damaged.
All electrical connections must be made according to local wiring
regulations and electrical codes.
Refer to Figure 3-7 (Customer Signal Connections) and Figure 3-8
(Analyzer AC Wiring) for termination points. For shelter instal-
lations, refer to Final “As-Built” shelter drawings in the analyzer
Documentation Package.
!
CAUTION
!
CAUTION
NOTE
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