GPL 5000 User Manual page 27

Completing the checklist below is recommended before moving the odorant to the GPL 5000.
1. Ensure that all new tubing has passed the required pressure tests.
2. The odorant bulk tank has been filled.
3. The odorant float gauge outputs a level signal to the GPL Odorizer, or the tank level has been
manually entered on the "Usage Screen" (Figure 13).
4. Ensure that the "Flow Screen" is set up correctly. Confirm that a flow signal is being
accurately read if in 4-20mA. If odorizer is receiving pulses, confirm that the odorizer is
receiving pulses by checking the I/O screen and watching the gas ticks. If the odorizer is in
manual gas, ensure that the manual gas page is set up correctly.
5. If the user's model of the GPL 5000 has a manual override knob on the solenoids, ensure the
solenoid override knobs (228B and 228A in Figure 15) are closed. (The arrow on the knobs
should point to the C position.)
6. Close the metering valves (232 & 256 in Figure 15) by turning the handles clockwise.
7. The ball valves (252 and 244 in Figure 15) should be closed.
8. Back the regulator (208 in Figure 15) out fully by turning the handle counterclockwise fully.
9. Walk through all screens of the PLC and ensure the odorizer is programmed to standards.
10. If a GPL 5000 Injection Panel is installed, make sure that the valves reflect the Red/Green
Open/Closed positions in Figure 16
11. GPL recommends using a GPL Odorizers Pipeline Tap Kit at the injection point. This ball valve
should be closed.
With the initial checklist complete, the odorant can now be moved up to the injection point.
1. Starting at the odorant tank, ensure adequate pressure on the tank for the application. Normal
operation depends on the site application. The bulk tank must be 20-30 PSIG greater than the
injection point's pressure. For example, if the injection point is 70 PSIG, the tank should be set
to 90-100 PSIG. Please adhere to all industry standards regarding necessary relief for the tank. If
the tank has adequate pressure, continue to step 2.
2. Open the tank supply valve, which allows the odorant to move from the tank to the supply line.
Ensure that there are no leaks before moving forward. If the supply line feeds a GPL Injection
Panel, move to step 3. If the supply line leads directly to the odorizer, move to step 4.
GPL5000-UG-012424-Rev1
GPL 5000 User Guide
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