Grundfos MAGNA 32-100, Инструкция по эксплуатации

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6. Electrical connection
The electrical connection and protection must be
carried out in accordance with local regulations.
• The pump requires no external motor protection.
• Check that the supply voltage and frequency cor-
respond to the values stated on the pump name-
plate.
6.1 Supply voltage
1 x 208 - 230 V +/- 10 %, 50/60 Hz.
6.2 Connection to the supply
7. Start-up
Do not start the pump until the system has been
filled with liquid and vented. Furthermore, the
required minimum inlet pressure must be available at
the pump inlet, see section 12. Technical data.
The system cannot be vented through the pump.
8. Functions
Most functions can be selected via the pump control
panel. However, some functions can only be
selected with the R100 or via expansion modules.
8.1 Functions selected via the pump
control panel
The following functions are selected via the pump
control panel; see fig. 11.
• AUTO
ADAPT
(factory setting)
Recommended for most heating installations.
During operation, the pump automatically makes
the necessary adjustment to the actual system
characteristic. This setting ensures minimum
energy consumption and noise level which
reduces operating costs and increases comfort.
• Proportional-pressure control
The pump head is changed continuously in
accordance with the water demand in the system.
The desired setpoint can be set on the pump
control panel.
• Constant-pressure control
A constant head is maintained, regardless of
water demand. The desired setpoint can be set
on the pump control panel.
Automatic night-time duty
The pump changes automatically between normal
duty and night-time duty depending on the
flow-pipe temperature. Automatic nighttime duty can
be combined with the above-mentioned control
modes.
8.2 Functions selected via the R100 remote
control
Additional functions can be selected via the R100
remote control:
• Constant-curve duty
The pump runs at a constant speed, on or
between the max. and min. curves.
• Temperature influence
The pump head varies depending on the liquid
temperature.
Warning
Risk of electric shock —
This pump is supplied with a
grounding conductor and
grounding-type attachment plug.
To reduce the risk of electric shock,
be certain that it is connected only
to a properly grounded, ground-
ing-type receptacle.
Warning
The pump must be connected to an
external disconnect switch.
Grounding can be used for
protection against indirect contact.
Megging must be carried out as
described in section 11. Megging.
Warning
If the pump is connected to an elec-
tric installation where a Ground
Fault Circuit Interrupt (GFCI) is
used as additional protection, this
circuit breaker must trip out when
ground fault currents with DC con-
tent (pulsating DC) occur.
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