Installation
2–8 H
2
S in Natural Gas
7. Connect the ground wire to the ground terminal marked .
Connecting Electrical Power to an Analyzer with
an Optional Type X Purge
Units with an optional Type X purge require two power connections via a 3/4”
NPT hole on the purge controls. The purge system’s Electronic Power Control
Unit (EPCU) module assembly MUST be removed, exactly as described below,
prior to conduit, wire or wiring harness installation.
1. Carefully remove EPCU screw cover from EPCU base.
2. Remove two display interface module mounting screws.
3. Remove the display interface module by grasping the card with one
hand and gently pull outward while slightly rocking the card up and
down.
4. If the Encapsulated Intrinsic Safety Module's (EISM) connection
headers are not wired, go to step 5. If the EISM's connection headers
are wired, remove connection headers from module, continue to
step 5.
5. Utilizing a small flat blade screwdriver, remove the two EISM's
bonding screws.
6. Remove the EPCU's control module Assembly by grasping with one
hand and gently pull outward while slightly rocking the card side to
side.
7. Remove the main power wiring header - P1, hardwire bypass wiring
header - P4 (if utilized) and the alarm wiring header - P2 (if utilized).
DO NOT remove the EPCU base module unless specifically requested
by the factory.
8. With EPCU module assembly removed, carefully remove the three
modular plug-in terminals located on EPCU base module.
9. Run conduit or armored cable from the power source panel to an
appropriate gland installed in the 3/4” NPT conduit opening on the
EPCU housing.
The EPCU Module Assembly is a microprocessor based electronic
device. Technicians MUST be properly grounded to prevent
module damage.
Because the breaker or switch in the power panel will be the
primary means of disconnecting the power from the analyzer, the
power panel should be located in close proximity to the equipment
and within easy reach of the operator, or within 10 feet of the
analyzer.
To Next Page
Loading...
