Electric motor Calpeda
M.. V1
OPERATING INSTRUCTIONS
Table of contents
Subject
Page
1.
Example plate motor . . . . . . . . . . . . . . . . . . . . . . .18
2.
Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.
Installation and starting . . . . . . . . . . . . . . . . . . . . .18
4.
Operation conditions . . . . . . . . . . . . . . . . . . . . . . .18
5.
Motors working at variable speed . . . . . . . . . . . . .19
6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
7.
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1. Example plate motor
2. Lifting
All CALPEDA motors that weigh more than 25 kg are
equipped with lifting eyebolts.
Only the main lifting eyebolts must be used to lift the mo-
tor, but they must not be used when the motor is connec-
ted to the pump. The centre of balance of motors with the
same axis height can vary according to the different
powers, the assembly layout and the auxiliary equipment.
Damaged eyebolts must not be used. Make sure the eye-
bolts are not damaged before lifting the motor.
The lifting eyebolts must be shut before being used. If
necessary, the eyebolt position can be adjusted using sui-
table washers as spacers.
Make sure suitable lifting equipment is used, and that the
lifting hook size is adequate for the eyebolts. Be careful
not to damage the auxiliary equipment and the cables
connected to the motor.
3. Installation and starting
Disconnect the motor before working on it or on
the equipment it moves.
3.1 Insulation resistance check
Check insulation resistance before starting the machine
and when you suspect that humidity is forming in the win-
dings.
Disconnect the motor before working on it or on
the equipment it moves.
Insulation resistance, correct at 25°, must exceed the re-
ference value of 100 MΩ (measured at 500 or 1000 V
DC). The insulation resistance value halves every time
the room temperature increases by 20 °C.
The motor casing must be earthed and the win-
dings must be discharged immediately after mea-
suring to prevent risks of electric shock.
Windings soaked in sea water usually need to be redone.
3.2 Motor fitting and alignment
Make sure there is enough space around the motor to
guarantee air circulation. Correct alignment is essential
for preventing bearing faults, vibrations and possible shaft
breakage.
Align the motor using suitable methods. Re-check align-
ment after tightening the bolts or stud bolts for the last ti-
me.
Do not exceed the load values permitted for the bearings,
which are given in the product catalogues.
3.3 Machines with condensate discharge tap
Make sure the discharge holes and taps are turned
downwards.
All the discharge holes must be closed in dusty areas.
3.4 Wiring and electrical connections
The terminal box of standard single speed motors normal-
ly contains 6 winding terminals and at least one earth ter-
minal.
In addition to these, the terminal box can also contain the
thermistor connections, anti-condensation resistors, or
other auxiliary devices.
Suitable cable terminals must be used for connecting.
The auxiliary device cables must be connected directly to
the relative terminals. The machines cannot be moved
once they have been positioned. Unless otherwise indi-
cated, the cable input threads are expressed in metric
units. The cable glands must have the same protection
level and IP rating as the terminal boxes. With cable in-
puts, use cable glands and seals that are compliant with
the protection type and the type and diameter of the ca-
ble.
Earthing must be carried out in compliance with lo-
cal laws before connecting the motor to the mains.
Make sure the protection level of the motor is suitable for
the environmental and climatic conditions; for example
make sure water cannot enter the motor or the terminal
boxes.
The terminal box seals must be inserted correctly into
their respective seats to guarantee the correct IP rating.
3.4.1
Connection for different starting
methods
The terminal box of standard single speed motors normal-
ly holds six winding terminals and at least one earth termi-
nal, which allow DOL or Y/D starting. Refer to the Figure.
1 .Wiring drawing (only for Calpeda motors)
4. Operation conditions
4.1 Use
Unless indicated otherwise on the nominal data plate,
the motors are designed for the following environmental
conditions.
- Maximum surrounding temperature from -20°C to
+40°C.
- Maximum altitude 1,000 m above sea level.
- Power supply tolerance ±5% and frequency ±2% in
compliance with EN / IEC 60034-1.
The motor can only be used for the applications it has
been designed for. The nominal values and operation
Made in Italy
MONTORSO
VICENZA
1
14
2
3,4,5
6,7,8
13
15
16
17
9,10,11,12
1 Type
2 Nominal power
3 Power voltage
4 Frequency
5 Current
6 Nominal speed
7 Service type
8 Insul. class
9 Voltage
10 % load
11 cos f
12 yield
13 Certifications
14 Serial number
15 Weight
16 Protection
17 Efficiency rating
Example plate motor 50Hz
18
