Pratissoli MXXR Serie Manuel D'utilisation Et D'entretien page 33

11 PREVENTIVE MAINTENANCE
For pump reliability and efficiency, comply with maintenance
intervals as shown in the table below.
PREVENTIVE MAINTENANCE
Every 500 hours
Check oil level
To replace, follow instructions contained in the repair
*
manual.
12 PUMP STORAGE
12.1 Method for filling pump with anti-corrosion
emulsion or anti-freeze solution
Method for filling pump with anti-corrosion emulsion or anti-
freeze solution using an external diaphragm pump based on
the layouts shown in par. 9.7:
a) Close the filter drain line, if open.
b) Make sure the connecting pipe is clean, coat with grease
and connect it to the high pressure discharge.
c) Connect the suction pipe to the diaphragm pump;
open the pump suction connection and attach the pipe
between it and the diaphragm pump.
d) Fill the container with solution/emulsion.
e) Insert the free ends of the suction pipe and the high
pressure exhaust pipe inside the container.
f ) Switch on the diaphragm pump.
g) Pump the emulsion until it exits from the high pressure
exhaust pipe.
h) Continue pumping for at least another minute. The
emulsion can be strengthened if necessary by adding Shell
Donax for example to the solution.
i) Stop the pump, remove the pipe from the suction
connection and close with a plug
j) Remove the hose from the high pressure exhaust. Clean,
grease and plug both pipe connections.
12.2 Pipes
a) Before greasing and protecting pipes according to
previously described procedure, dry connections with
compressed air.
b) Cover with polyethylene.
c) Do not wrap the pump too tightly and make sure there are
no folds.
13 PRECAUTIONS AGAINST FROST
Follow the instructions in Chapter 12 in areas and
times of the year at risk of frost (see par. 12.1).
In the presence of ice, do not start the pump
under any circumstances until the circuit
has been fully defrosted. Serious damage to
the pump may result if this prescription is
disregarded.
14 WARRANTY CONDITIONS
The guarantee period and conditions are contained in the
purchase agreement.
The guarantee will in any case be invalidated if:
a) The pump is used for purposes other than the agreed
purposes.
b) The pump is driven by an electric motor or internal
c) The safety devices provided are uncalibrated or
Every 1500 hours
d) The pump has been used with accessories or spare parts
Change oil
e) Damage has been caused by:
Check / Replace*:
Valves
Valve seats
Valve springs
Valve guides
Check / Replace*:
H.P. seals
L.P. seals
15
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combustion engine having performance values exceeding
those shown in the table.
disconnected.
not supplied by Interpump Group.
1) improper use
2) failure to follow maintenance instructions
3) any use different from that described in the operating
instructions
4) insufficient flow rate
5) defective installation
6) improper positioning or sizing of pipes
7) unauthorized design modifications
8) cavitation.
OPERATING FAULTS AND THEIR
POSSIBLE CAUSES
The pump does not produce any noise upon
start-up:
- The pump is not primed and is running dry.
- No suction water.
- Valves are jammed.
- Outlet line is closed and thus prevents the
release of air trapped in the pump manifold.
Pump pulsates irregularly:
- Air suction.
- Insufficient supply.
- Bends, elbow bends, fittings along the suction
line are choking the passage of liquid.
- The suction filter is dirty or too small.
- The booster pump, where installed, is supplying
insufficient pressure or flow rate.
- The pump is not primed for insufficient head or
the outlet is closed during priming.
- The pump is not primed due to valve jamming.
- Worn valves.
- Worn pressure seals.
- Imperfect functioning of the pressure control
valve.
- Problems on the transmission.
The pump does not supply the nominal flow rate/
excessive noise:
- Insufficient supply (see various causes as above).
- Rpm lower than the nominal speed;
- Excessive internal leakage of the pressure control
valve.
- Worn valves.
- Excessive leakage from the pressure seals.
- Cavitation due to:
1) Improper sizing of suction ducts/undersized
diameters.
2) Insufficient flow rate.
3) High water temperature.
The pressure supplied by the pump is insufficient:
- The user flow (nozzle) is or has become greater
than the pump capacity.
- Insufficient pump rpm.
- Excessive leakage from the pressure seals.
- Imperfect functioning of the pressure control
valve.
- Worn valves.