Inhaltsverzeichnis; Operating Conditions; Transportation; Installation - Calpeda MXV Originalbetriebsanleitung

istr_MXV25 01_2010 10-12-2009
Vertical multi-stage in-line pumps
MXV, MXVL, MXV4, MXVL4
OPERATING INSTRUCTIONS
Table of contents
Subject
1. Operating conditions
2. Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4. Connecting the motor . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5. Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.1 Suction pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5.2 Delivery pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
6. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7. Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7.1. Preliminary checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7.2. Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7.3. Starting and checking operations . . . . . . . . . . . . . . . . . .7
8. Maintenance and monitoring pump operation . . . . . . . .8
9. Dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
9.1. Replacing the mechanical seal . . . . . . . . . . . . . . . . . . . .8
9.2. Replacing the ball bearing . . . . . . . . . . . . . . . . . . . . . . . .9
9.3. Bearing in the second stage and intermediate bearing . . . . .9
10. Remounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
10.1. Tightening torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
10.2. Axial position of the pump rotor . . . . . . . . . . . . . . . . . . . .9
11. Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
12. Cross section drawing and designation of parts . . . . . . .9
12.1. Stages, impellers and sleeves composition . . . . . . . . .38
READ AND FOLLOW ALL INSTRUCTIONS

1. Operating conditions

Standard construction
- For clean liquids: non-explosive and non-flammable, non-hazardous
for health or the environment, non-aggressive for pump
materials, not containing abrasives, solid or fibrous particles.
- With seal rings in EPDM the pump is not suitable for use with oil.
- Maximum final pressure in the pump casing: 25 bar.
- Liquid temperature: -15˚ to +110˚C.
- Installation in well-ventilated locations protected against the
weather, with maximum environment temperature of 40˚C.
Rated motor power
MXV, MXVL (2900 1/min)
MXV4, MXVL4 (1450 1/min) up to kW: 1,1
Sound pressure
Starts per hour
The electric data marked on the label are referred to the nominal
power of the motor.
When a non-standard motor is installed, refer to the rated operating
conditions and noise-level values in the instructions for the motor.
Fig.1a Raising pump
without the motor

2. Transportation

The safe movement of the equipment is on the user re-
sponsability and any lifting operation must be carried
out by a suitably trained and qualified personnel.
6
8:23 Pagina 6
Page
. . . . . . . . . . . . . . . . . . . . . . . . . . .6
up to kW: 0,75 2,2 4 7,5
dB (A) max: 60 68 69 74
max: 35 30 20 15
Fig.1b Raising pump
with motor
Raise and transport the pump and pump-motor unit (without
packaging) as indicated in fig. 1. Raise the pump-motor unit slowly
(fig.1b), making sure it does not move from side to side in an
uncontrolled way, to avoid the risk of imbalance and tipping up.

3. Installation

The MXV, MXVL, MXV4, MXVL4 pumps must be installed with the
rotor axis in the vertical position and with the base under the pump.
Install the pump as close as possible to the suction source (with
consideration given to the NPSH value).
Provide space around the pump for motor ventilation, to
allow for checking of shaft rotation, for filling and draining
the pump and to allow for collection of the liquid to be
removed (especially for draining liquids which are harmful or
have to be removed at temperatures higher than 60 ˚C).
Make sure prolonged accidental leakage of liquid
does not cause damage to persons or property.
Leakage may develop as a result of surge pressure or
water hammer, erroneous operations (such as failing to close
a plug or valve) or other functional disorders. Allow for the
possibility of channeling away any leaked liquid or for an
automatic drainage system against flooding.
Mount the pump on a flat horizontal surface (using a level gauge)
such as a solid cement base or a rigid supporting structure in metal.
To ensure stability, insert, if necessary, small pieces of
calibrated metal plate next to the 4 anchoring screws.
4. Connecting the motor
The MXV, MXVL, MXV4, MXVL4 pumps are designed for use with
standard electric motors with (IEC 34-7) IM V1 construction form
and dimensions and output ratings in accordance with IEC 72.
If a pump is supplied without the motor, check the rated
power and rpm indicated on the name plate and technical data
given in the data sheet.
Before installation clean the motor shaft extension, the key and
contact surfaces of the flanges to remove any protective paint,
dirt or oxydation.
Lubricate the motor shaft extension with a graphite-base,
dripfree, anti-friction product.
Do not use oil as it can harm the mechanical seal below (see
section 9.1.).
With the pump in the vertical position, insert the motor shaft in
the coupling, aligning the key with the key slot and resting the
motor flange on the lantern flange.
Turn the motor, adjusting the position of the terminal box as
required and aligning the holes on the flanges.
ATTENTION: the 4 flange screws (70.18) with nut must be
uniformly tightened with alternated crossover tightening proce-
dure in diametrically opposite positions (see section 10.1.).
Before and after tightening the screws (70.18), make sure the
coupling with pump shaft and motor shaft can be freely
turned by hand (remove and then replace the guard 32.30).
ATTENTION: for removing or replacing the motor see
section 9.

5. Pipes

Provide a diameter assuring a liquid flow velocity not higher
than 1.5 m/s for suction, and 3 m/s for delivery.
The pipe diameters must never be smaller than the pump
connection ports.
The arrows on the base of the pump (61.00) indicate the in-
let (suction) and outlet (delivery) ports.
Ensure the internal pipe surface is clean before connection.
ATTENTION: secure all pipes to their rests close to the pump
and connect them so that they are not subjected to stress
and do not transmit vibration or flexion strain to the pump
(see fig.2).
Provide for the possibility of draining the pump without
having to drain the entire system.
Install correctly any compensators for absorption of expansion
or impeding noise transmission.
Screw the union couplings or the flanges into the threaded ports
(ISO 228) by inserting in the joint a suitable sealing material.
Tighten the pipes or union couplings only to the extent sufficient
to ensure a tight seal. Excessive torque may damage the pump.
With flanged ports make sure the gaskets do not protrude insi-
de the pipes.