Xylem ECOCIRC XL & XLplus - Manual (Page 20)

not able to enclose the pump housing in a
diffusion-proof manner.
• If the customer creates the diffusion-proof
insulation, then the pump housing must not
be insulated above the motor flange. The
drain opening must not be obstructed so
that the accumulated condensation can run
out.
4.5 Change the position of the pump head
WARNING:
• Drain the system or close the ON-
OFF valves on both sides of the
pump before disassembling the
pump. The pumped fluid can be
pressurized and scalding hot.
• There is the risk of escaping vapor
when the pump head is separated
from the pump housing.
Electrical Hazard:
Before starting work on the unit, make
sure that the unit and the control panel
are isolated from the power supply and
cannot be energized.
CAUTION:
Burn hazard. During operation various
surfaces on the unit will become hot. To
avoid burn injury, use heat protective
gloves.
WARNING:
• A strong magnetic field is created
when the rotor is removed from or
inserted into the pump head. This
magnetic field can be harmful to
pacemaker wearers and others with
medical implants. In addition, the
magnetic field may attract metal
parts to the rotor which can cause
injuries and/or damage the bearing
of the pump.
For more information, see Figure 14 and Figure
15 .
1. Loosen the four hex-head screws (2) that fix
the pump head to the pump housing (4).
2. Rotate the pump head (1) in 90° steps to the
desired position.
3. When separating the pump head (1) from the
pump housing (4):
a) Avoid removing the rotor from the pump head
(1);
b) Pay attention to the magnetic hazard listed be-
fore;
c) Check that the O-ring (3) is not damaged.
A defective O-ring must be replaced. An O-
ring as spare part is already available inside
the package.
4. Fit and tighten according to the table below
for the four hex-head screws (2) that affix the
motor to the pump housing (4).
Pump model Screw type Torque
25–40
25–60
32–40
32–60 M5 2.0 Nm
25–80
25–100
32–80
32–100
32–100F
40–100F
50–100F M6 10.0 Nm
32–120F
40–120F
50–80F
65–80F M8 19.0 Nm
50–120F
65–120F
80–120F
100–120F M10 38.0 Nm
WARNING:
check for the presence of leaks after re-
assembling the pump.
4.6 Electrical installation
Precautions
Electrical Hazard:
• Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
• Before starting work on the unit,
make sure that the unit and the con-
trol panel are isolated from the pow-
er supply and cannot be energized.
Grounding (earthing)
Electrical Hazard:
• Always connect the external protec-
tion conductor to ground (earth) ter-
minal before making other electrical
connections.
• All electrical equipment must be
ground (earth ) connected. This ap-
plies to the pump unit and related
equipment. Verify the pump ground
terminal is earthed.
NOTICE:
The number of power on and power off of the
pump must be less than 3 times per hour and in
any case less than 20/24h
4.6.1 Power supply connection
WARNING:
en - Translation of the original instructions
20