Grundfos Conlift1 LS User Manual

English (GB)
4
3.2.1 Cable to condensate source or external
alarm
The 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 an
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.
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.
4. Starting up the product
1. Check that all hoses and connections are tight.
2. Connect the power supply.
4.1 Checking the 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 the Conlift, this function can be
checked by means of a multimeter.
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 alarm, push the inlet hose into the
lifting station and let the condensate from the boiler
or air-conditioning system run into the tank again.
TM05 1152 2211
1
2
3
Brown
Blue
1 = COM1
2 = NO4
3 = NC2
Start up Conlift in accordance with local
regulations and accepted codes of good
practice.
The safety overflow switch must be
activated before the water starts running
out of Conlift.

Grundfos Conlift1 LS Specifications

General

Supply Voltage	230 V
Mains Frequency	50 Hz
Protection Class	IP24
Type	Condensate removal pump
Max Liquid Temperature	50°C
Housing Material	Plastic
Power Supply	230 V
Pumped Liquids	Condensate water
Outlet Connection	Multiple stepped hose connectors