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Installation, Operating and Maintenance Instruction
12. Motor Operating Instructions
The following instructions must be followed
exactly,
to
guarantee
installation, at the operation and at the
maintenance of the motor. All persons should
be directed to the present manual which are
performing these tasks. The neglect of the
instructions
can
guarantee.
Electrical connections
Make sure that the rated voltage corresponds to
the supply voltage.
Ground the pump before making any other
connection.
We
recommend
differential switch (30 mA) be installed as extra
protection against lethal electric shocks in the
event of faulty grounding.
Connect the pump to the mains using a multiple-pole
switch
or
other
device
disconnection (interruption of all the supply wires) from
the mains, with a contact separation of at least 3 mm.
Remove the terminal board cover by first removing the
screws.
Carry out the connections as indicated on the back of
the terminal board cover, and as shown in fig. 3 - 4.
The single-phase version has a built-in overload
protection; the three-phase version must be equipped
by the user with a magneto-thermal switch or
magnetic starter with overload and undervoltage
protection, a thermal relay and fuses installed
upstream.
The overload relay must be set to the motor current
rating. The thermal relay may be set to a current value
slightly lower than the full load value when the electric
pump is definitely underloaded, but the thermal
overload protection must not be set to current values
higher than the full load values.
Checking the rotation direction of electric pumps
with three-phase motors.
The direction of rotation may be checked before the
pump is filled with the liquid to be pumped, provided
it is run for very short starts only.
The pump must not be run until it is filled with
liquid.
Continuous
dry running will damage the
mechanical seal beyond repair.
If the direction of rotation is not anti-clockwise when
facing the pump from the suction side interchange two
supply leads.
MP 100-english
Article No 771074011
the
safety at
cause
the
loss
of
that
a
high
sensitivity
ensuring
multiple-pole
page 98
Fault finding chart
the
PROBLEM
1. The pump doesn't
start
the
2. Overload
protection trips:
– accidentaly
– systematically
Machines with permanently greased bearings
Machines up to frame size 180 are normally fitted with
permanently greased bearings of either 2RS or 2Z
types.
Machines fitted with grease nipples for the frame
size 200 – 355
Lubricate the machine while running with a grease gun
on the grease nipple. The grease nipple must be
cleaned before lubrication.
The quantity of grease for regreasing or change are
shown in the table.
If a grease outlet plug is fitted, remove temporarily
when lubricating, or permanently with automatic
lubrication.
If the machine is fitted with a lubrication information
plate, follow the values given, otherwise use values as
follows.
Speed
[rpm]
max. 1800
above 1800
Speed
[rpm]
max. 1800
above 1800
The maintenance intervals are based on standard
ambient conditions.
Life time of roller bearings
approx. 20.000 hours for the frame size 56-180.
Model MP, MPA, MPAI
PROBABLE CAUSE POSSIBLE
REMEDIES
A) No electrical
A) Supply electrical
power
power
B) Blown fuses:
B1 Because
B1 Replace fuses
inadeguate (blowing
with adequate ones
current too low)
B2 Because the
B2 Repair the motor
motor or the supply
or replace the cable
cable are damaged
C) Overload
C)Reset the
protection previously
protection (if it trips
tripped
again see problem 2)
A) Momentary loss of
a phase
C) Incorrect setting
C) Set to rated
of the motor switch
current
D) The pump's
D) Close the delivery
delivery is higher than
valve until the
the rated one
capacity returns to
the rated value
E) Dense and viscous
E) Determine the
liquid
actual power
requirements and
replace the motor
accordingly
lubrication
time
[h]
[months]
Interval
1.500
6
750
3
lubrication
time
Interval [h]
[months]
10.000
24
5.000
12
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