Annovi Reverberi SRMV Série Manuel D'instructions page 13

Operating Instructions and Parts Manual
Plunger Pumps
Troubleshooting (cont.)
Symptom
Low pressure (cont.)
Pump runs extremely
rough, pressure very
low
Water leakage from
under manifold
Slight leak, oil leak-
ing in the area of
crankshaft
Excessive play in the
end of the crankshaft
pulley
Water in crankcase
Loud knocking noise
in pump
13
Possible Cause(s)
3 Air leak in inlet plumbing
4 Relief valve stuck, partially
plugged or improperly
adjusted valve seat worn
5 Worn packing. Abrasive
in pumped in cavitation.
Inadequate water
6 Worn inlet, discharge valve
blocked or dirty
1 Inlet restrictions and/or air
leaks.
2 Stuck inlet or discharge
valve
Worn packing or cracked
plunger
1 Worn crankshaft seal or
improperly installed oil seal
o-ring
2 Bad bearing
Worn main bearing from
excessive tension on drive
belt
1 Humid air condensing into
water inside the crankcase
2 Worn packing and/or
cracked plunger
1 Cavitation or sucking air
2 Pulley loose on crankshaft
3 Broken or worn bearing
SRMV Series Pumps
Corrective Action
3 Disassemble, reseal and reas-
semble
4 Clean and adjust relief valve;
check for worn or dirty valve
seats
5 Install proper filter suction at
inlet manifold must be limited to
lifting less than 20 feet of water
or 8.5 psi vacuum
6 Replace inlet and discharge valve
1 Clean out foreign material
2 Replace worn valves
Install new packing or plunger
1 Remove oil seal retainer and
replace damaged 0-ring and/or
seals
2 Replace bearing
Replace crankcase bearing and/or
tension drive belt
1 Change oil intervals
2 Replace packing. Replace
plunger
1 Check water supply is turned on
2 Check key and tighten set screw
3 Replace bearing