16
Hookup auto-coupling system
, see fig. C,
page 534.
Proceed as follows:
1. Fit the crossbar in the tank.
2. Fit the adapted piece of pipe for the movable part
of the hookup auto coupling to the pump
discharge port.
3. Fasten a shackle and a chain to the movable part
of the hookup auto coupling.
4. Clean out debris from the tank before lowering
the pump.
5. Lower the pump into the tank by means of the
chain secured to the pump lifting bracket.
6. Hang up the end of the chain on a suitable hook
at the top of the tank and in such a way that the
chain cannot come into contact with the pump
housing.
7. Adjust the length of the motor cable by coiling it
up on a relief fitting to ensure that the cable is not
damaged during operation. Fasten the relief
fitting to a suitable hook at the top of the tank.
Make sure that the cables are not sharply bent or
pinched.
8. Connect the motor cable and the monitoring
cable, if any.
8.2 Free-standing submerged installation
Pumps for free-standing submerged installation can
stand freely on the bottom of the tank or similar
location. See fig. D, page 535, and fig. E, page 536.
In order to facilitate service on the pump, fit a flexible
union or coupling to the discharge line for easy
separation.
If a hose is used
, make sure that the hose does not
buckle and that the inside diameter of the hose
matches that of the discharge port.
If a rigid pipe is used
, the union or coupling, non-
return valve and isolating valve should be fitted in
the order mentioned, when viewed from the pump.
If the pump is installed in muddy conditions or on
uneven ground, it is recommended to support the
pump on bricks or a similar support.
Proceed as follows:
1. Fit a 90 ° elbow to the pump discharge port,
and connect the discharge pipe or hose.
2. Lower the pump into the liquid by means of a
chain secured to the lifting bracket of the pump.
It is recommended to place the pump on a plane,
solid foundation. Make sure that the pump is
hanging from the chain and
not
the cable.
3. Hang up the end of the chain on a suitable hook
at the top of the tank and in such a way that the
chain cannot come into contact with the pump
housing.
4. Adjust the length of the motor cable by coiling it
up on a relief fitting to ensure that the cable is not
damaged during operation. Fasten the relief
fitting to a suitable hook. Make sure that the
cables are not sharply bent or pinched.
5. Connect the motor cable and the monitoring
cable, if any.
9. Electrical connection
The electrical connection should be carried out in
accordance with local regulations.
Note
If several pumps are installed in the
same tank, the pumps must be installed
at the same level in order to allow
optimum pump alternation.
Caution
The pump must not be used with
a frequency converter.
Warning
The pump must be connected to an
electrical panel in accordance with
local regulations. The electrical panel
typically includes fuses, main switch
and earth leakage circuit breaker with
a contact separation according to
EN 60204-1, 5.3.2.
It must be possible to lock the mains
switch in position 0. Type and
requirements as specified in
EN 60204-1, 5.3.2.
The pump incorporates a motor-
protective circuit breaker and
all control logic.
Warning
If the pump has an Ex mark on the
nameplate, make sure that the pump
is connected in accordance with the
instructions given in this booklet.
Warning
The explosion protection classification
of the pump is CE
II 2 G, Ex bcd IIB
T4 Gb. See section 4.2.
The classification of the installation
site must in each individual case be
approved by the local authorities.
The CIU unit, if used, (see section 9.1)
must not be installed in potentially
explosive environments.
Warning
On explosion-proof pumps, make sure
that an external earth conductor is
connected to the external earth
terminal on the pump using a
conductor with a secure cable clamp.
Clean the surface for external earth
connection, and fit the cable clamp.
The cross section of the earth
conductor must be at least 4 mm
2
, e.g.
type H07 V2-K (PVT 90 °) yellow/green.
Make sure that the earth connection is
protected from corrosion.
