28
• Have a
Skilled Technician
perform the inspections required by special maintenance.
• Wear clothing and personal protective equipment able to provide adequate protection from any high-pressure
jets and chemical products used.
Carry out the preliminary activities indicated in the manual of the machine in which the motor pump
is integrated and in that of any combustion engine fitted; unless otherwise indicated, with respect to the
motor pump, always remember the following.
a) With the engine off and the motor pump completely cooled down, check the oil level corresponds to the
reference mark on the positive-displacement compensator (6), or on the specific oil level indicator (MTP P 48
and MTP YA 65).
For any touch ups, refer to the types of lubricants indicated in the paragraph
“s
pecIfIcatIons
and
technIcal
data
”
.
WARNING
• In the case of the MTP P 48 motor pumps, a
Skilled Technician
will have to be contacted for any oil top-ups
because the oil filling cap is not directly accessible.
b) If present, check the correct inflation of the pressure accumulator by means of a normal compressed-air gun
with pressure gauge of the type of those used to check tyre inflation pressure.
Inflation depends on the pressure range within which the motor pump will be operating, according to the
indications of the following table:
OPERATING PRESSURE
ACCUMULATOR INFLATION PRESSURE
bar
psi
bar
psi
2 - 5
29 -73
2
29
5 - 10
73 - 145
2 - 5
29 - 73
10 - 20
145 - 290
5 - 7
72 - 102
20 - 50
290 - 725
7
102
CAUTION
• In case of operation at very low temperatures, make sure there is no ice inside the motor pump and pipes.
• Perform the checks required by routine maintenance, with special reference to those relating to the oil.
CHECKING AND CONNECTING UP TO THE POWER SUPPLY
(MOTOR PUMPS WITH ELECTRIC MOTOR)
WARNING
• Also follow the instructions contained in the manual of the machine in which the motor pump is
integrated.
• A
Skilled Technician
must:
- make sure the power supply of the motor pump features a suitable fuse and is in conformity with the details
shown on the plate (12): in particular, the power voltage must not be outside the ± 5% range;
- connect a plug in compliance with the laws applicable in the country where the machine in which the motor
pump is integrated is installed, in the case of the power lead being without such plug and of the motor pump
not being permanently connected to a power supply source.
• The connection to the power source must be made by a
Skilled Technician
and must be in compliance with
the requirements of IEC 60364-1.
The power supply line of the motor pump must be fitted with a switch able to interrupt the power supply
whenever ground dispersion exceeds 30 mA for 30 ms or with a device for testing the earth circuit.
• If the motor pump does not have a power lead and plug, or another device for disconnecting it from the mains,
