Blackhawk Technology Company
V-2PneumaticPistonPumpI&O-10365 | 20220811
16
Maintenance
PERIODIC CHECKS
• Check pump back pressure at the discharge tee.
⸰
Refer to Appendix, Page 28: “FIGURE 1: Flow Rate vs Depth Per
Downhole Type”
• Check liquid discharge rate at the discharge tee.
⸰
Refer to Appendix, Page 28: “FIGURE 1: Flow Rate vs Depth Per
Downhole Type”
• Check air leakages at actuator drive motor.
⸰
Refer to Troubleshooting, Page 17, Section 1.b: “Air Cylinder Seals Worn Out”
• Check stuffing box drain port for leaks.
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Refer to Maintenance, Page 15, Section 3: “Replacing Stuffing Box Seals”
REPLACING SEALS IN THE ACTUATOR DRIVE MOTOR .
• Refer to V-2 Reconditioning Guide (external document)
• The actuator’s drive motor has a number of seals in it and they will wear over
time.
• The cylinder nose seal cartridge, located below the actuator cylinder, is a critical
seal.
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If this seal starts to leak air, pressure cannot be built up in the cylinder and the
actuator will not reciprocate.
Replace cylinder seals at this time.
REPLACING STUFFING BOX SEALS .
• Refer to V-2 Reconditioning Guide (external document) & various stuffing
box / cartridge configurations in Appendix, Pages 21-23
• Stuffing box seals will wear over time.
⸰
Typical life of the stuffing box seals is about 3 to 6 months.
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Seal life depends on discharge pressure, stroke speed, grit and temperature of
liquid.
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Once the seals wear, the stuffing box will begin to leak liquid from the drain
port.
Replace stuffing box seals at this time.