12
050406 .01
vetus®
Automatic demand water pressure pump WP
Low pump capac-
ity or pressure.
Dirt in inlet filter.
Remove cover and clean filter.
Worn wobble plate.
Replace pump.
Worn diaphragm.
Replace pump.
Inlet / outlet tube restriction.
Remove restriction.
Inlet air leak.
Tighten fittings / Replace cracked
fittings.
Faulty pressure switch.
Replace pressure switch assembly.
Incorrect voltage.
Check voltage (± 10 %)
Pump leaks.
Loose fasteners.
Tighten fasteners.
Pump seals degraded.
Replace pump.
Leak in diaphragm.
Replace pump.
Noisy or rough
operation.
Flexible mounting surface.
Mount pump on rigid surface.
Loose pump head.
Tighten fasteners.
Compressed base feet.
Decompress base feet.
Rigid plumbing.
Plumb pump with flexible plumb-
ing.