Use and Care Manual

First Choice When Quality Matters
NORTH AMERICA
Plunger Pumps Operating Instructions and Parts Manual RSV Series Pumps
Symptom Possible Cause(s) Corrective Action
Oil leak between crankcase and pump- ing section
Worn rod oil seals Replace crankcase piston rod
seals
Frequent or prema- ture failure of the packing
1 Cracked, damaged or worn
plunger
1 Replace plungers
2 Overpressure to inlet
manifold
2 Reduce inlet pressure
3 Material in the fl uid being
pumped
3 Install proper fi ltration on pump
inlet plumbing
4 Excessive pressure and/or
temperature of fl uid being pumped
4 Check pressures and fl uid inlet
temperature; be sure they are within specifi ed range
5 Running pump dry 5 Do not run pump without water
Pump runs but pro- duces no fl ow
Pump is not primed Flood suction then restart pump
Pump fails to prime Air is trapped inside pump Disconnect discharge hose from
pump. Flood suction hose, restart pump and run pump until all air has been evacuated
Pump looses prime, chattering noise, pressure fl uctuates
1 Air leak in suction hose or
inlet
1 Remove suction line and inspect
it for a loose liner or debris lodged in hose. Avoid all unnec- essary bends. Do not kink hose
2 Clogged suction strainer 2 Clean strainer
Low pressure at nozzle
1 Unloader valve is by-pass-
ing
1 Make sure unloader is adjusted
property and by-pass seat is not leaking
2 Incorrect or worn nozzle 2 Make sure nozzle is matched
to the fl ow and pressure of the pump. If the nozzle is worn, replace
3 Worn packing or valves 3 Replace packing or valves
Pressure gauge fl uc- tuates
1 Valves worn or blocked by
foreign bodies
1 Clean or replace valves
2 Packing worn 2 Replace packing
Low pressure 1 Worn nozzle 1 Replace with nozzle of proper
size
2 Belt slippage 2 Tighten or replace with correct
belt
Troubleshooting
Plunger Pumps Operating Instructions and Parts Manual RSV Series Pumps
First Choice When Quality Matters
NORTH AMERICA
seal (Make sure it is squarely seated). (See Figure 21)
4. Installing the low-
pressure seal You want the open side of the seal to be pointed toward the water side of the head (toward the high-pressure seal) and the fl at side toward the drive end of the pump.
Place the seal into
the gland at an angle, with your fi nger push the exposed side of the seal towards the center and work the seal into position. After the seal is in the gland you can work it into it proper position.. (See Figure 22)
5. Install the retainer
O-ring. (See Figure 23)
6. Squarely seat the
retainer into the head and push with even pressure until it snaps into position. (See Figure 24)
Inlet Valve Removal: 1. Remove the valve cap. 2. Inspect the valve cap O-ring for any
damage, replace if necessary.
3. Screw the machine screw into
the hole on top of the valve cage (approx 1/8”). Using the diagonal pliers grasp the screw at the lowest reachable point. Using the pump
head as a base, push down on the pliers, the valve will lift out.
4. Use a small probe to move the
poppet up and down to assure that the valve is functioning properly and that no debris is stuck in the valve.
5. Inspect the valve o-ring for any
damage, replace if necessary.
Inlet Valve Assembly: 1. Insert the valve assembly squarely
into the port pushing it into place with a deap well socket (you will feel the valve assembly seat).
3. Install the valve cap and torque to
the proper specifi cation.
Pump Head to Drive End Installation 1. Turn the crankshaft to align
the plungers as shown. (See Figure 25)
2. Place the head
evenly onto the plungers and push it until it makes contact with the drive end of the pump. (See Figure 26)
3. Torque the head
bolt as shown in the tightening sequence diagram. (See Figure 27 & 28)
Figure 21
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p
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p
p
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p
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p
p
p
p
p
p
p
p
o
o
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os
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s
s
t
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Figure 23
Figure 24
Service Pumps (continued)
Figure 22
Figure 25
Figure 26
Figure 27
Fig
Figure 28