Gardner Denver FXD – 10” Operating And Service Manual - page 25
3–600 Page 19
SECTION FIVE
TROUBLESHOOTING
FAILURE TO DELIVER REQUIRED VOLUME:
(a)
Pump not primed.
(b)
Insufficient speed.
(c)
Fluid liner worn.
(d)
Suction lift too high.
(e)
Air leaks in suction or stuffing boxes.
(f)
Foot valve too small or clogged.
(g)
Suction pipe not immersed deep enough.
(h)
Fluid piston packing worn.
(i)
Fluid valves worn.
(j)
Insufficient prime mover horsepower.
(k)
Piston loose on rod.
FAILURE TO CREATE RATED PRESSURE:
(a)
Insufficient prime mover horsepower.
(b)
Slippage in drive.
(c)
High back pressure.
(d)
Piston rings in fluid end binding.
(e)
Pistons improperly packed.
(f)
Valves not holding.
(g)
Leakage past fluid piston rings.
(h)
Leakage past liner packing.
(i)
Liners worn.
PUMP LOSES CAPACITY AFTER STARTING:
(a)
Leaky suction line.
(b)
Suction lift too great.
(c)
Entrained vapors in the fluid, especially if fluid is
warm.
PUMP VIBRATES
(a)
Fluid pistons improperly packed.
(b)
Foundation not sufficiently rigid.
(c)
Fluid piston packed too tight.
(d)
Fluid valves improperly seated.
(e)
Improper discharge line.
NOISY FLUID VALVES:
(a)
Usually due to air leaks or failure of the fluid end to
completely fill due to faulty suction conditions.
(b)
Valves not seating tightly.