Ranpump A8-PVX, Руководство по эксплуатации и техническому обслуживанию

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9.0. STORAGE OF THE DIAPHRAGM PUMP
8.6 Troubleshooting
PROBLEM CAUSE SOLUTION
1- Pump cycles at stall
or fails to hold
pressure at stall.
Worn check valve balls, seats or o-rings. Replace.
2- Pump will not cycle,
or cycles once and
stops.
Air valve is stuck or dirty.
Disassamble and clean air valve. Use
ONLY filtered air.
Check valve ball severely worn and
wedged in seat or manifold.
Replace ball and seat.
Check valve ball is wedged into seat, due
to overpressurization.
Install a pressure relief valve.
Dispensing valve is clogged. Relieve pressure and clean valve.
3- Pump operates
erratically.
Suction line is clogged. Inspect; clean.
Sticky or leaking ckeck valve balls. Clean or replace.
Diaphragm is ruptured. Replace.
Pump is sucking air.
Check inlet hose and inlet manifold o-
rings.
Restricted exhaust. Remove restriction.
4- Air bubbles in fluid.
Suction line is loose. Tighten.
Diaphragm is ruptured. Replace.
Loose inlet manifold, damaged seal
between manifold and seat, or damaged o-
rings.
Tighten manifold bolts, or replace
seats or o-rings.
Loose diaphragm shaft bolt. Tighten or replace.
Damaged o-ring. Replace.
5- Fluid in exhaust air.
Diaphragm is ruptured. Replace.
Loose diaphragm shaft bolt. Tighten or replace.
Damaged o-ring. Replace.
6- Pump frequently
stops running.
Insufficient hose diameter. Get a larger diameter hose.
Too much hose length. Use a shorter hose.
7- Pump stops working
and exhausts air.
Air valve is stuck or dirty.
Disassamble and clean air valve. Use
filtered air.
Air valve teflon o-rings are worn. Disassamble and replace z-rings.
Pilot valve o-rings are worn. Disassamble and replace o-rings.
Air inlet pressure and flow are not enough. Rise the pressure and flow.
8- Pump leaks fluid
externally from
manifold body
connects.
Loose manifolds, damaged o-ring between
manifold and seat.
Replace o-rings, tighten manifold bolts.
9- Diaphragm moves
to inside of the pump,
and fluid leaks from
the openings.
Fluid outlet is clogged or outlet valve is
closed when the pump is under pressure. Clean the outlet line or open the fluid
outlet valve.
Max. air pressure is exceeded. Lower the air pressure.
The fluid temperature is above the working
limits. Adjust the air pressure according to
the fluid temperature.
Lower the air pressure.