Wilo MVISE 2G Series, Installation And Operating Instructions Manual

Page: 23 / 53

23 WILO AG 06/2008
English
energy supply companies are to be followed.
2.5 Safety instructions for inspection and assembly
The operator must ensure that all inspection and
assembly work is carried out by authorised and
qualified specialists who have carefully studied
these instructions.
Work on a pump or installation should only be
carried out once the latter has been brought to a
standstill.
2.6 Unauthorised modification and manufacture of
spare parts
Changes to the pump/machinery may only be
made in agreement with the manufacturer. The
use of original spare parts and accessories
authorised by the manufacturer will ensure safe-
ty. The use of any other parts may invalidate
claims invoking the liability of the manufacturer
for any consequences.
2.7 Improper use
The operating safety of the pump or installation
can only be guaranteed if it is used in accordance
with paragraph 4 of the operating instructions.
All values must neither exceed nor fall below the
limit values given in the catalogue or data sheet.
3. Transport and interim storage
When receiving the material, check that there has
been no damage during the transport. If any defect
has been stated, take the required steps with the
carrier within the allowed time. If the delivered
material is to be installed later on, store it in a dry
place and protect it from impacts and any outside
influences (humidity, frost etc...).
DANGER !
Due to high position of centre of gravity
and small ground surface of this type of pumps,
beware of unstability during handling to avoid any
falling down and take necessary means to avoid
injuries or damaging.
CAUTION ! Handle the pump carefully so as not to
alter the geometry and the alignment of the
hydraulic unit.
4. Products and accessories
4.1 Description (Fig. 1, 2, 5) :
1 - Pump suction valve
2 - Pump discharge valve
3 - Non-return valve
4 - Venting plug
5 - Pipe supports or brackets
6 - Strainer
7 - Storage tank
8 - Town water supply
9 - Switch and section switch with fuses
10 - Lifting hook
11 - Foundation block
12 - Pressure sensor
13 - Tank
14 - Insulation valve of the tank
15 - Display
16 - Adjustment button
HC - Minimum inlet pressure
HP - Position of venting plug
4.2 Pump and motor
• Multistage vertical pump with wet rotor motor
not self-priming, with ports in line on the same
axis in bottom part.
• Wet rotor motor fitted with its converter in its
upper part.
• Protection index motor-converter : IP44
• Insulation class : F
• Operating frequencies : 50/60Hz
• Operating voltages : 400v +/- 10%
• Hydraulic connection
Oval flanges on the PN 16 pump casing:
pump supplied with oval cast iron counter
flanges for screw-on tube, rings and bolts.
CAUTION !
Only pump running under pressure.
4.4 Accessories (option)
Accessories must be ordered separately.
• Insulating valves • bladder or galvanised tank •
tank for antihammer blow effect • weld-on
(Steel) or screw-on (Stainless Steel) counter flan-
ge • non-return valves (with nose or spring ring
when operating in mode 2) • vibrationless sleeves
• protection kit against dry-running • sensor kit
for pressure regulation (accuracy :
≤
1% ; use bet-
ween 30 % and 100 % of the reading range) •
Interface for connection to PLR network •
Interface for connection to LONWORKS network.
5. Installation
Installation and service by qualified personnel
only
5.1 Mounting
• Fig. 1 : pump under pressure on storage tank (7) or
town water supply (8).
The liquid flowed by the pump allows the lubrication
of the wet rotor motor bearing and the cooling of the
motor-converter. It is imperative that the suction
pressure is upper or equal to 1,2bar.
So, a running with a storage tank : HC
≥
2m (fig. 1)
and the venting plug position : HP
≥
0,5m
CAUTION !
Assemble only after finishing all wel-
ding and bra-zing operations and after thorough
cleaning of the pipes.In fact any dirt can damage
the correct operation of the pump.
• Install the pump in a place easy to reach, protec-
ted against extrema conditions (rain and sun in
excess, frost) and as close as possible from the
drawing point.
• For heavy pumps provide a point of attachment
(lifting hook-item10) in the pump axis (item12) to
facilitate removal.
• Install the pump on a concrete block (at least 10
cm high) (item11) and fix with anchor bolts (ins-