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en - Original instructions
content (a Type B RCD is suggested).
• A mains isolator switch with a contact gap of
at least 3 mm
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the elec-
tric pump. Improper combinations could fail to guar-
antee the protection of the unit.
Check that the following requirements are met:
• The control panel must protect the pump against
short-circuit. A time lag fuse or a circuit breaker
(Type C model is suggested) can be used to pro-
tect the pump.
• The pump has built in overload and thermal pro-
tection, no additional overload protection is re-
quired.
The motor checklist
Use cable according to rules with 3 leads (2 + earth/
ground). All cable must be heat-resistant up to
+85°C (185°F).
4.4 Pump installation
1. Install the pump according to the systems liquid
flow.
• The arrow on the pump housing shows the
flow direction through the pump.
• The pump must be installed with the pump
head in a horizontal position. For more infor-
mation about allowed positions, see
12
2. If necessary, rotate the position of the pump
head for better reading of the user interface.
For more instructions, see section 4.5.
3. If applicable, install the thermal shells.
• Only use the pump thermal shells that are
included in the delivery. Do not insulate the
motor housing, the electronics can overheat
so that the pump automatically switch off.
• The thermal shells that are included in the
delivery must only be used in hot water cir-
culation applications with fluid temperature
above 20°C (68°F). The thermal shells are
not able to enclose the pump housing in a
diffusion-proof manner.
• If the customer creates the diffusion-proof in-
sulation, 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 pres-
surized and scalding hot.
• There is the risk of escaping vapor
when the pump head is separated
from the pump housing.
20
For more information, see
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);
Figure
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
25–40
25–60
32–40
32–60
25–80
25–100
32–80
32–100
32–100F
40–100F
50–100F
32–120F
40–120F
50–80F
65–80F
50–120F
65–120F
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 in-
serted into the pump head. This mag-
netic field can be harmful to pace-
maker wearers and others with medi-
cal implants. In addition, the magnetic
field may attract metal parts to the ro-
tor which can cause injuries and/or
damage the bearing of the pump.
Figure 14
Screw type
M5
M6
M8
M10
and
Figure 15
.
Torque
2.0 Nm
10.0 Nm
19.0 Nm
38.0 Nm
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