Starting Up The Product; Checking The Function - Grundfos Conlift1 Montage- Und Betriebsanleitung

3.2.1 Cable to condensate source or external
alarm
The electrical connection of a cable with a
free cable end must be carried out by an
authorised electrician.
Conlift has a safety overflow switch which can be
connected to the condensate source or to an
external alarm system. The switch is connected to a
1.7 metre alarm cable with free cable end.
Alarm systems with a control voltage of 250 VAC, 2.5
A, can be used.
On delivery, the alarm cable is connected to
terminals COM1 (brown) and NC2 (blue) of the
safety overflow switch. See fig. 1.
Blue
Brown
Fig. 1 Wiring diagram
The alarm cable can be connected in two ways,
depending on application:
• Shutdown of condensate source
The safety overflow switch can be connected to a
Class-II low-voltage circuit.
To enable shutdown of the condensate source,
the COM1 and NC2 terminals of the safety
overflow switch must be connected in series with
the low-voltage thermostat circuit of the
condensate source.
• External alarm system
The COM1 and NO4 terminals can be used to
close a low-voltage alarm circuit.
To activate an alarm, the COM1 and NO4
terminals of the safety overflow switch must be
connected in series with the low-voltage alarm
circuit.
2
3 1
1 = COM1
2 = NO4
3 = NC2

4. Starting up the product

Start up Conlift in accordance with local
regulations and accepted codes of good
practice.
1. Check that all hoses and connections are tight.
2. Connect the power supply.

4.1 Checking the function

Pump operation
Press the manual test button.
Alarm
1. To ensure that the alarm level is reached,
squeeze the outlet hose or close the isolating
valve, if fitted, and fill water into the tank. The
pump will be started via the float switch.
2. Continue filling water into the tank until the safety
overflow switch is activated. If no external alarm
is connected to Conlift, this function can be
checked by means of a multimeter.
The safety overflow switch must be
activated before the water starts running
out of Conlift.
3. Stop filling water into the tank and stop
squeezing the outlet hose. The alarm stops (the
switch opens). The pump continues operating.
When the stop level is reached, the pump stops.
After checking the function, push the inlet hose back
into the lifting station and let the condensate from the
boiler or air-conditioning system run into the tank
again.
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