3-24 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
3. Terminate the AC power conductors (see Figure 3-8 and related Final
“As-Built” drawings).
Before making the AC power connections, open the explosion-proof
power-disconnect switch to the analyzer, and open all analyzer fuses.
Do not apply power to the system until after all of the wiring has been
installed, connected, and verified, and only if the purging system is
ready for operation.
GP Analyzers:
Route the AC power conductors to the Electronics Enclosure and ter-
minate the wires.
Purged Analyzers:
The AC electrical supply cable must be approved by the local wiring
regulations and electrical codes for the hazardous location, and must
be rated for minimum 80 °C (176 °F).
Following local wiring regulations and electrical codes, route the AC
power conductors to the Disconnect Enclosure.
Install a cable gland on the power cable as per the manufacturer’s
instructions. Connect the cable gland to the power cable entry on the
Disconnect Enclosure.
Route the AC power conductors into the Disconnect Enclosure.
Apply sealing compound in the cable gland as per the manufacturer’s
instructions.
Terminate the AC power connections inside the Disconnect Enclosure.
4. Plug all unused cable entry ports with certified Ex d plugs (typically
M25 x 1.5, 6H).
5. Purged Analyzers only:
Using a wire connector, connect an external ground wire between the
“Enclosure Common Ground Terminal Strip” on the analyzer backpan
(see Figure 3-9) and a location close to the analyzer.
!
WARNING
!
CAUTION
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