Publicité
10
START-UP AND OPERATION
10.1
Preliminary checks
Before start-up, ensure that:
The suction line is connected and pressurized
(see par. 9.4 - 9.5 - 9.6) and the charts in par.9.8.
1. The suction line ensures a hermetic seal over time.
2. Any shut-off valves between the supply source and the
pump are fully open. The outlet line is free discharge, to
permit rapid expulsion of the air present in the pump
manifold and therefore facilitate fast priming.
3. All suction and outlet fittings and connections are
properly tightened.
4. The coupling tolerances on the pump/transmission axis
(half-joint misalignment, Cardan joint tilt, belt pulling,
etc.) remain within limits required by the transmission
manufacturer.
5. Oil in the pump casing is at the required level, verified with
the dipsticks (pos. , Fig. 8).
1
In case of prolonged storage or long-term
inactivity, check proper functioning of the
suction and outlet valves.
10.2
START UP
1. At first start-up, verify that the rotation direction and the
supply pressure are correct.
2. Start-up the pump without any load.
3. Check that the supply pressure is correct.
4. Check that the rotation rpm during operation does not
exceed the nominal rpm of the pump.
5. Let the pump run for a period of no less than 3 minutes,
before putting it under pressure.
6. Before each pump stop, reset pressure by means of the
control valve or with any relieving devices and reduce to a
minimum rpm (activation with combustion motors).
11
PREVENTIVE MAINTENANCE
For pump reliability and efficiency, comply with maintenance
intervals as shown in the table of Fig. 9.
Many applications will require changes at the frequency
shown in the table due to severe and unusual operating
conditions.
Every 100 hours
Check oil level
If the pump is temporarily not going to be
used, in order to prevent stiffening or corrosion
1
caused by the fluids being pumped, it is strongly
recommended to flush all the components inside
the head.
To increase the component life of hydraulic parts,
wash the parts with fresh water at the end of the
working day
12
PUMP STORAGE
12.1
Long-term inactivity
If the pump is started for the first time after a long
period from the date of shipment, before operation
check the oil level, inspect the valves as specified
in chapter 10, then follow described start-up
procedures.
12.2
Method for filling pump with anti-corrosion
emulsion or anti-freeze solution
a) Make sure the connecting pipe is clean.
Fig. 8
b) Fix the suction pipe to the diaphragm pump, open the
pump suction connection and attach the pipe between it
and the diaphragm pump.
c) Fill the container with solution / emulsion.
d) Insert the free ends of the suction pipe and the high
pressure exhaust pipe inside the container.
e) Switch on the diaphragm pump.
f ) Pump the emulsion until it exits from the high pressure
exhaust pipe.
g) Continue pumping for at least another minute. The
emulsion can be strengthened if necessary by adding Shell
Donax for example to the solution.
h) Stop the pump, remove the pipe from the suction
connection and close with a plug.
i)
Remove the hose from the high pressure exhaust. Clean
and grease and plug both pipe connections.
13
PRECAUTIONS AGAINST FROST
Follow the instructions in Chapter 12 in areas and
times of the year at risk of frost (see par. 12.2).
In the presence of ice, do not start the pump
for any reason until the circuit has been fully
defrosted, in order to avoid serious damage to
the pump.
14
WARRANTY CONDITIONS
The guarantee period and conditions are contained in the
purchase agreement.
The guarantee will in any case be invalidated if:
25
PREVENTIVE MAINTENANCE
Every 300 - 500 hours
Change oil
Check / Replace:
Balls
Valve seats
for MK29M5B and MK29M8B
Check / Replace:
Valves
Valve seats
Valve springs
Valve guides
for MK29M5D and MK29M8D
Check / Replace:
H.P. seal
Wiper ring
Fig. 9
Publicité
