Algas SDI Direct Fired F6-ASME, Руководство по эксплуатации и техническому обслуживанию

Страница: 34 / 52

Maintenance
Algas-SDI Operation and Maintenance Manual – P/N – 54000 23
Capacity control valve maintenance procedure
Use Repair Kit p/n: 3-0017 (see repair kit section for kit details)
1. Using a 7/16” end wrench or tubing wrench, loosen and remove the capacity
control valve sensing line fitting on the top of the capacity control valve and
carefully slide tube out of the way in order to remove the large flange nut
(capacity control valve cap). Note: you may need to loosen the tube on the
other end at the top of the inlet valve to remove the tube completely.
2. With a 1-1/2” box end wrench (suggest using 6 point), loosen the large flange
nut on the top of the capacity control valve (capacity control valve cap).
3. Remove the piston from the valve and wipe the piston with a rag/cloth (one
that does not leave lint on surface) or lightly with a scotch-brite type material
to remove any debris and/or oils from the piston surface.
4. If the piston is stuck in the valve, insert a screw into the screw tap at the top
center of the piston. This will allow you to be able to grasp the screw with a
pair of pliers to be able to pull the piston from the valve.
5. Remove the old O-ring from the piston and replace it with the smallest O-ring
from the kit. Lightly grease new O-ring before installing it on the piston.
6. Remove spring from the capacity control valve.
7. Thoroughly wipe the inside of the valve body with a rag/cloth (again, one that
does not leave lint on surface) to remove any debris or oils from the valve
body.
8. Insert new spring into the Capacity Control Valve.
9. Lightly spray the surface of the capacity control valve piston with a dry
lubricant (graphite) and insert piston into the valve moving it up and down
thereby lubricating the body of the valve and ensuring the piston is moving
up and down freely.
10. Lightly grease and replace the O-ring around the capacity control valve cap
(large flange nut).
11. Install the capacity control valve cap (large flange nut) and tighten into valve
body. You may apply NEVER-SEEZ compound to the flange nut to allow for
easy removal of the flange nut in the future.
12. Re-install capacity control valve sensing line and tighten fittings.