Grundfos Conlift1 LS User manual

Conlift1 LS
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos Conlift.
Sections 1-4 give the information necessary to be
able to unpack, install and start up the product in a
safe way.
Sections 5-10 give important information about the
product, as well as information on service, fault
finding and disposal of the product.
CONTENTS
Page
1. Symbols used in this document
1.1 Warnings against hazards involving
risk of death or personal injury
The text accompanying the three hazard symbols
DANGER, WARNING and CAUTION is structured in
the following way:
1. Symbols used in this document 2
1.1 Warnings against hazards involving risk of
death or personal injury 2
1.2 Other important notes 3
2. Receiving the product 3
2.1 Transporting the product 3
3. Installing the product 3
3.1 Mechanical installation 3
3.2 Electrical installation 3
4. Starting up the product 4
4.1 Checking the alarm 4
5. Product introduction 5
5.1 Product description 5
5.2 Intended use 5
5.3 Operating mode 5
5.4 Handling of condensates 5
5.5 Marking and approvals 5
5.6 Accessories 6
6. Control functions 6
7. Servicing the product 6
7.1 Maintenance 6
7.2 Service 6
7.3 Contaminated products 7
8. Fault finding the product 8
9. Technical data 9
10. Disposal 9
Read this document before installing the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not
be made by children without supervision.
DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or serious
personal injury.
WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious personal injury.
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate personal injury.

English (GB)
3
1.2 Other important notes
2. Receiving the product
2.1 Transporting the product
3. Installing the product
If not already integrated, a water trap (emission trap)
must be fitted in all inlets.
The Conlift is not designed for outdoor use.
3.1 Mechanical installation
See also the quick guide supplied with the Conlift.
When installing the Conlift, observe the following:
• The condensate must run freely into the lifting
station.
• The cooling slots in the motor cover must not be
covered.
• The lifting station must be easily accessible in
order to facilitate maintenance.
• The lifting station must be installed in a
well-illuminated and -ventilated room.
3.2 Electrical installation
Carry out the electrical connection according to local
regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
The power supply cable has a Schuko plug or a free
cable end. The cable has a length of 2 metres.
We recommend to provide the permanent installation
with an earth leakage circuit breaker (ELCB) with a
tripping current < 30 mA.
A blue or grey circle with a white graphical
symbol indicates that an action must be
taken.
A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
indicates that an action must not be taken
or must be stopped.
If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
Tips and advice that make the work easier.
WARNING
Harm of body
Death or serious personal injury
- Stack maximum two pallets together
under transportation.
Installation must be carried out by
specially trained persons and according to
local regulations.
Electrical connection must be carried out
by an authorized electrician.
WARNING
Electric shock
Death or serious personal injury
- Make sure that the protective earth from
the socket outlet is connected to the
protective earth in the pump.
Make sure that the plug has the same
PE connection system as the socket
outlet or else use a suitable adapter.
The product must be connected to a main
switch with a minimum contact gap of 3
mm in all poles.
The electrical connection of a cable with a
free cable end must be carried out by an
authorised electrician.

English (GB)
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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.

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5. Product introduction
5.1 Product description
Grundfos Conlift1 LS is a small, compact lifting
station with built-in-non-return valve.
5.2 Intended use
The Conlift is designed for the pumping of
condensate from the following:
• boilers
• air-conditioning systems
• cooling and refrigeration systems
• air dehumidifiers
• evaporators.
The Conlift is suitable for the pumping of condensate
which is collected below sewer level or which cannot
flow to the sewage system or drain of the building by
means of a natural downward slope.
The Conlift can pump condensates not requiring
neutralisation, i.e. with pH values of 2.5 or higher.
Condensates with pH values up to 2.5 must be
neutralised before they leave the Conlift.
Boilers fired with the following fuels normally supply
condensate with pH values up to 2.5:
• gas
• liquid gas
• low-sulphur fuel oil according to DIN 51603-1.
Irrespective of the capability of the Conlift, local
regulations may require the installation of a
neutralisation unit, even for pH values of 2.5 or
higher.
5.3 Operating mode
The Conlift is designed for maximum 60 starts per
hour.
S3 (intermittent operation): 30 % according to DIN
EN 0530 T1. This means that the system is running
for 18 seconds and is stopped for 42 seconds.
5.4 Handling of condensates
Condensates from condensate boilers are very
aggressive and will attack the material of the
building's sewage system.
In order to protect the sewage system, we
recommend that you use a neutralisation unit. The
neutralisation unit is included in Conlift2 pH+ and is
available as an accessory for Conlift1 and Conlift2.
See section 9. Technical data.
The local outlet regulations regarding condensates
from boilers must be met.
5.5 Marking and approvals
Marking
Approvals
WARNING
Biological hazard
Death or serious personal injury
- Use the product only to pump
condensates.
If Conlift is to be connected to a
pressure-reducing valve, observe the
boiler manufacturer's instructions.
When cleaning heat exchangers and
burner units of boiler systems, make sure
that no acid and cleaning residuals enter
the condensing unit.

English (GB)
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5.6 Accessories
The following accessories are available from your
local Grundfos supplier.
6. Control functions
The condensate runs by natural fall through a hose
into the tank. See section 7. Servicing the product.
The liquid level in the tank is controlled automatically
by a float switch. A micro switch in the float switch
will start the pump when the liquid level reaches the
start level, and it will stop the pump again when the
liquid level has fallen to the stop level. The
condensate is pumped through the outlet hose to the
drain.
The Conlift also has a safety overflow switch with a
1.7-metre electric cable. This overflow switch can be
connected to the condensate boiler and set to stop
the boiler in case of an alarm.
The Conlift has a thermal switch which stops the
motor in case of overload. When the motor has
cooled to normal temperature, it restarts
automatically.
7. Servicing the product
Always use original accessories from Grundfos to
ensure safe and reliable operation.
7.1 Maintenance
The Conlift does not require any special
maintenance, but we recommend that you check
operation and pipe connections at least once a year
and that you clean the collecting tank, if necessary.
7.2 Service
Thanks to the Conlift design, service can easily be
performed in case of malfunction or blocked pump.
Accessory/
service part Description Product number
pH+ Box Complete
neutralisation unit
including fitting
accessories,
neutralisation
granulate and pH
indicator.
97936176
Extension
hose
6 metres of PVC hose
with 10 mm internal
diameter including
one hose coupling.
97936177
Granulate
refill package
Granulate, 4 x 1.4 kg. 97936178
Alarm PCB
Conlift
Printed-circuit board
(PCB) enabling
additional pump start
at alarm level or stop
of boiler with acoustic
alarm.
97936209
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
Maintenance and service must be carried
out by specially trained persons and
according to local regulations.
If the power supply cable is damaged, it
must be replaced by the manufacturer, the
manufacturer's service partner or similarly
qualified person.
Electrical connection must be carried out
by an authorized electrician.
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.

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7.2.1 Conlift
See illustrations on page 10.
Make the following checks and clean the collecting
tank, if necessary:
1. Disconnect the power supply.
2. Cut off the flow of condensate from the boiler or
other application, or stop the flow of condensate
to the Conlift.
3. Make sure that the hoses are not mechanically or
chemically damaged.
4. Remove the outlet hose by turning the bayonet
coupling, and check the O-ring. The condensate
in the hose will not run out due to the non-return
valve.
5. If the condensate is running out of the hose,
check and clean the non-return valve.
6. Press the side-locking catches and lift off the
motor support. Place it in upright position.
7. Remove deposits, dirt, algae and incrustations
under running water.
7.3 Contaminated products
If a Conlift has been used for a liquid which is
injurious to health or toxic, it will be classified as
contaminated.
The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the product,
contact Grundfos with details about the liquid before
returning the product for service. Otherwise,
Grundfos can refuse to accept the product for
service.
Any application for service must include details
about the liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the product thoroughly with clean
water and rinse the parts in water after
dismantling.

English (GB)
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8. Fault finding the product
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
Fault Cause Remedy
1. The pump does
not run.
a) No power supply. Connect the power supply.
b) A fuse is blown. Replace the fuse (1 A slow-blow fuse).
c) The power supply cable is
damaged.
Repair or replace the cable. This must only
be carried out by an authorised service
workshop or by Grundfos.
d) The thermal overload switch
has tripped:
– The motor is not sufficiently
cooled.
Clean the cooling slots in the motor cover.
– Deposits in the pump. Clean the impeller, pump housing and the
entire lifting station.
2. Reduced or no
performance.
a) Outlet hose squeezed or
broken.
Straighten the outlet hose or replace it. The
bending radius of the hose must be at least
60 mm.
b) The non-return valve does not
open.
Remove the outlet connection, and clean the
non-return valve.
c) The motor fan cannot be turned
freely.
Clean the pump housing and the impeller.
3. Frequent
starts/stops.
a) The non-return valve does not
close.
Remove the outlet connection, and clean the
non-return valve.
b) The inlet quantity is too high. Make sure the inlet quantity is correct.
4. Alarm. a) The condensate is not pumped
out of the tank.
See points 1 and 2.

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9. Technical data
Supply voltage
1 x 230 VAC - 6 %/+ 6 %, 50 Hz, PE.
See the nameplate.
Input power
P1 = 70 W.
Input current
I = 0.65 A.
Alarm connection
An external alarm can be connected via the safety
overflow switch.
The cable can stand a control voltage of 250 VAC,
2.5 A.
Cable lengths
Power supply cable: 2.0 metres.
Alarm cable: 1.7 metres.
Storage temperature
When stored in dry rooms:
• Empty tank: -10 - +50 °C.
• Tank with condensate: above 0 °C (risk of frost
not allowed).
Ambient temperature
During operation: 5-35 °C.
Liquid temperature
Average temperature: 50 °C.
Maximum head
5.5 metres.
Maximum flow rate
600 l/h.
pH value of condensate
2.5 or higher.
Density of condensate
Maximum 1000 kg/m3.
Motor protection
• Thermal overload switch: 120 °C.
• Insulation class: F.
Enclosure class
IP20.
Weight
2.0 kg.
Volume
• Tank volume: 2.65 litres.
• Useful volume: 0.9 litre.
• Alarm condition: 2.1 litres.
• Operating condition: 1.7 litres.
Dimensions
See dimensional sketches on page 11.
10. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.

Appendix
10
Appendix 1
Conlift1 LS
.
TM05 8628 2413
2
3
1
2
3-4 7
8
6
1
88
5