Grundfos CM Smart Bedienungsanleitung

CM SMART

Installation and Operating Instructions

GRUNDFOS INSTRUCTIONS

9 - 13

6 - 8

14 - 15

Contents

SMART

CM Pump

CM3 CM5

CM Pump

PRESSURE TANK PRE-CHARGE:

The Pressure tank pre-charge is pre-set. On site adjustment should be made with

power off and delivery line open so that there is no pressure on the system. The

pressure tank pre-charge should be 10% below cut in pressure.

Control panel

TM03 9361 1508

Pos. Description Function

1"Pressure

scale"

The pressure scale has 13light fields indicating the

pressure from 0 to 6 bar. All light fields illuminate

briefly when the power supply is switched on.

2 "Pump on"

The green indicator light is permanently on when

the pump is running. The indicator light also

illuminates briefly when the power supply is

switched on.

3 "Alarm"

The red indicator light is permanently on or flashes

when the pump has stopped due to an

operating fault. The indicator light also illuminates

briefly when the power supply is switched on.

4 [Reset]

The button is used for

• resetting of fault indications

• checking of DIP switch settings.

14 & 15

Pressure Manager

The Pressure Manager must be fitted on the

The Pressure Manager is a pressure regulator with

The Pressure Manager start and stops the pump

switch, the Pressure Manager ensures a steady flow

The Pressure Manager incorporates a pump dry-running

Pressure Manager to the piping system by meas

terminal box of the Pressure Manager

shows the control panel on the Pressure Manager

When the Pressure Manager has been installed and the

TM03 9220 3707 - TM04 1953 1508

1x115/230 V

50/60 Hz, PE

OUT

1x230 V

50/60 Hz, PE

OUT

TM04 1991 1708

Functions

Auto-reset

When the auto-reset function is enabled, cycling and dry-running alarms will be automatically

reset. To enable the function, set DIP switch 6 to "ON".

Anti-cycling

To avoid inadvertent starts and stops of the pump in case of a failure in the installation,

the anti-cycling function can be enabled. The function will detect cycling if it occurs and stop

the pump with an alarm. When the PM 2 has been set to start/stop according to water

consumption, cycling may occur in the following situations:

•In case of a minor leakage.

•If a tap has not been entirely closed.

When the PM 2 has been set to start/stop with 1 bar differential pressure, cycling may occur

in the following situations:

•If the pressure tank has lost its precharge pressure.

•If the size of the pressure tank is insufficient.

If the cycling alarm has been activated, the pump can be restarted manually by pressing [Reset].

When the auto-reset function is enabled, the pump will be restarted automatically after 12 hours

in alarm condition. To enable the function, set DIP switch 7 to "ON".

Maximum continuous operating time (30minutes)

When this function is enabled, the pump will be stopped when the pump has been running

continuously for 30 minutes.

Restart the pump by pressing [Reset].

The purpose of this function is to avoid unnecessary water and current consumption,

e.g. in case of pipe Tfracture or considerable leakages.

To enable the function, set DIP switch 8 to "ON".

CautionThe auto-reset function should NOT be enabled on pumps which cannot self-

prime when water returns after dry-running.

Note In case of a very small consumption, the anti-cycling function may register

this as a minor leakage and stop the pump inadvertently. If this occurs, the function can be disabled.

Note When the function is enabled, any consumption exceeding 30 minutes will cause an alarm, and the

pump will be stopped. If enabled, the auto-reset function will not restart the pump.

Pressure Manager

DIP switches

The PM 2 has a number of settings which can be

made with the DIP switche behind the control panel.

See fig. 6.

+1.0

4 +1.0

5 STOP = START + 1

6 AUTO RESET

ANTI CYCLING

MAX RUN 30 MIN.

OFF/ON

START

1.5 BAR 1

+0.5

4 +1.0

5 STOP = START + 1 BAR

Enabling the DIP switch settings

To enable the DIP switch settings, press [Reset] or disconnect and reconnect the

power supply to the unit.

Note When the desired DIP switch settings have been made, they must be enabled,

otherwise the PM 2 cannot detect the settings.

Checking the DIP switch settings

When [Reset] is kept pressed for at least 3 seconds, the light fields for the DIP switches

set to "ON" will illuminate in the pressure scale. The light fields illuminate from right

to left. This means that if the light field to the far right is on, DIP switch 8 has been set

to "ON", etc. See the table below.

Light field [bar] 2.53.0 3.5 4.0 4.5 5.0 5.5 6.0

DIP switch no. 1 2 3 4 5 6 7 8

Pressure Manager

Checks (Possible causes)

1. The pump does

not run. Check cables and cable connections for

defects and loose connections.

b) Fuses are blown.

See 2. a), b), c), d), e), f).

d) Control-current circuit

defective.

Repair or replace the control-current

circuit.

2. Motor-protective

circuit breaker has

tripped (trips out

immediately when

supply is switched

on).

a) Fuses are blown

b) Contacts of the motor-

protective circuit breaker

or magnet coil defective.

Replace the contacts of the motor-

protective circuit breaker, the magnet

coil or the entire motor-protective

circuit breaker.

c) Cable connection is loose

or faulty.

Check cables and cable connections

for defects, and replace the fuses.

d) Motor winding is defective.

e) The pump is mechanically

blocked.

Switch off the power supply, an

clean or repair the pump.

f) The setting of the motor-

protective circuit breaker is

too low.

Set the motor-protective circuit

breaker according to the rated

current of the motor (I1/1). See

nameplate.

3. The motor-

protective circuit

breaker trips out

occasionally.

a) The setting of the motor-

protective circuit breaker is

too low.

See 2.f).

b) Periodic supply failure.

c) Periodically low voltage.

Check that the supply cable of the

pump is correctly sized.

a) Supply failure.Switch on the switch.

Check cables and cable connection for

defects, and replace the fuses.

See 1. b).

See 2.c).

Check cables and cable connections

for defects and loose connections.

c) Motor protection tripped.

Warning

Before starting work on the pump, make sure that the power supply to the pump has been

switched off and that it cannot be accidentally switched on.

Fault Remedy

Repair or replace the motor.

Fault Finding Chart

5. The pump runs,

but gives no

water.

a) Pump inlet pressure too low.

b) The suction pipe is partly

clogged by impurities.

See 5. b).

c) The foot or non-return valve

is stuck in its closed position.

Remove and clean, repair or replace

the valve.

d) Leakage in suction pipe.

e) Air in suction pipe or pump.

See 5. a).

See 5. c).

See 5. d).

7. The pump runs

with reduced

performance.

a) Wrong direction of

rotation.

Three-phase pumps only:

Switch off the power supply with the

external circuit breaker, and interchange

two phases in the pump terminal box.

See also section 8.2 Checking the

direction of rotation.

b) See 5. a), b), c), d).

6. The pump runs

backwards when

switched off.

a) Leakage in suction pipe.

b) Foot or non-return valve

defective.

See 6. c).

c) The foot valve is stuck in

completely or partly open

position.

See 6. c).

See 5. c).

4. The pump

performance is

unstable.

a) Pump inlet pressure too

low.

b) Suction pipe is partly

blocked by impurities.

Remove and clean the suction pipe.

c) Leakage in suction pipe.

d) Air in suction pipe or pump.

Check the inlet conditions of the

pump.

Remove and repair the suction pipe.

Vent the suction pipe/pump. Check

the inlet conditions of the pump.

8. The green light

field for "0 bar"

is off even if

the power

supply has

been switched

on.

a) The fuses in the electric

installation have blown.

Replace the fuses. If the new fuses also

blow, check the electric installation.

b) The earth leakage circuit

breaker or the voltage-

operated circuit breaker has

been tripped out.

Cut in the circuit breaker.

c) No power supply.

d) The PM unit is defective.

Contact the power supply authorities.

Repair or replace the PM unit.

Checks (Possible causes)

Fault Remedy

Fault Finding Chart

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