Parker V300, Product Bulletin

Page: 19 / 36

Bulletin 76-00 B
19
ASCII to Hex Conversion
ASCII Number HEX Value
0 0x30
1 0x31
2 0x32
3 0x33
4 0x34
5 0x35
6 0x36
7 0x37
8 0x38
9 0x39
Maintenance Instructions
Maintenance Instructions
Procedure Instructions
Oil Draining
Review your facilities procedures on how to properly pump down and drain oil from a vessel before attempting to drain oil
from the purger heat exchanger. The following instructions are a recommendation and my not fall within the PM program of
your facility.
1. Follow the facilities oil draining procedures on how to properly extract oil from a vessel. The RSBCV safety bulletin,
located in the purger packet, provides additional safety and pump out instructions. Read these instructions prior on
continuing to the next step.
2. The purger heat exchanger must be isolated and pumped out before removing the oil. Close the hand shut-off valves
to the high pressure liquid and foul gas line. Keep the suction hand shut-off valve open to pump down the heat
exchanger.
Note: The purger controller can remain powered through the draining oil maintenance procedure.
3. Manually open the SV2 solenoid, #6 in the exploded view, on the high pressure liquid line by removing the seal cap and
turning the manual opening stem clockwise until only the flats on the end of the stem protrude from the packing nut.
This will prevent liquid ammonia from being trapped between the liquid hand shut-off valve and SV2 solenoid.
4. Use the HSBR level switch as a ammonia level indicator. When the LEDs turn off, the system will call for liquid, but the
liquid hand shut-off valve is preventing any additional liquid from entering the purger, pumping out the heat exchanger.
5. Allow the purger to pump out a few more minutes before closing the suction line hand shut-off valve. The remaining
ammonia in the system will pressurize the vessel and assist in draining the oil.
6. Purge one oil drain line at a time. Slowly crack open the shell side oil drain valve, see Figure 6, and discharge the oil
into the proper container accepted by safety codes and standards.
WARNING:
Do not open the oil drain valves completely.
7. When the oil is done draining close the oil drain valve.
8. Repeat steps 6 thru 7 for the tube side oil drain valve.
9. After draining all the oil from the purger heat exchanger the system is ready to go back online. Return the SV2 solenoid
valve back to automatic mode by turning the stem counter clockwise as far as it will go. Loosen the packing nut before
tuning the stem and re-tighten after the stem out.
10. Slowly open each line, no order required, and check for leaks. If there no leaks continue opening the hand shut-off
valves to full open. The purger will automatically start establishing the conditions required for purging.
Communication Protocol Continued