Grundfos CRE Series, CRIE Series, CRNE Series, SPKE Series, MTRE Series Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS

CRE, CRIE, CRNE, SPKE, CRKE, MTRE, CME

Grundfos E-pumps with MLE frequency-controlled permanent-magnet motors

Installation and operating instructions

English (US)

English (US) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

1. Limited warranty

2. Symbols used in this document

3. Abbreviations and definitions

4. General information

5. General description

5.1 Pumps without factory-fitted sensor

5.2 Pumps with factory-fitted pressure sensor

5.3 Settings

5.4 Radio communication

5.5 Battery

6. Mechanical installation

6.1 Mounting

6.2 Cable entries

6.3 Ensuring motor cooling

6.4 Outdoor installation

6.5 Drain holes

7. Electrical installation

7.1 Protection against electric shock, indirect contact

7.2 Power supply

7.3 Additional protection

7.4 Connection terminals

7.5 Signal cables

7.6 E-pump electrical connections

7.7 Bus connection cable

8. Operating conditions

8.1 Maximum number of starts and stops

8.2 Ambient temperature

8.3 Installation altitude

8.4 Air humidity

8.5 Motor cooling

9. Operating and control modes

9.1 Overview

9.2 Operating mode

9.3 Control mode

10. User interfaces

10.1 Standard control panel

10.2 Changing the position of the control panel

10.3 R100 remote control

10.4 Grundfos GO Remote

11. External setpoint signal

11.1 Operation with sensor feedback

11.2 Constant-curve operation

12. Bus signal

13. Priority of settings

14. Grundfos Eye

15. Signal relays

16. Megging

17. Technical data, single-phase motors

17.1 Supply voltage

17.2 Leakage current

18. Technical data, three-phase motors

18.1 Supply voltage

18.2 Leakage current

Page

11 11 12

12 12 12 13 13

13 13 14

14 17 18 32

33 34

35 35 36 37 38 38

38 38

19. Inputs/outputs

20. Other technical data

20.1 Sound pressure level

21. Disposal

1. Limited warranty

Products manufactured by GRUNDFOS PUMPS CORPORATION

(Grundfos) are warranted to the original user only to be free of

defects in material and workmanship for a period of 24 months

from date of installation, but not more than 30 months from date

of manufacture. Grundfos' liability under this warranty shall be

limited to repairing or replacing at Grundfos' option, without

charge, F.O.B. Grundfos' factory or authorized service station,

any product of Grundfos' manufacture. Grundfos will not be liable

for any costs of removal, installation, transportation, or any other

charges which may arise in connection with a warranty claim.

Products which are sold but not manufactured by Grundfos are

subject to the warranty provided by the manufacturer of said

products and not by Grundfos' warranty. Grundfos will not be

liable for damage or wear to products caused by abnormal

operating conditions, accident, abuse, misuse, unauthorized alteration or repair, or if the product was not installed in

accordance with Grundfos' printed installation and operating

instructions.

To obtain service under this warranty, the defective product must

be returned to the distributor or dealer of Grundfos' products from

which it was purchased together with proof of purchase and installation date, failure date, and supporting installation data. Unless otherwise provided, the distributor or dealer will contact Grundfos or an authorized service station for instructions. Any defective product to be returned to Grundfos or a service station must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be included if so instructed.

GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES ARISING FROM INSTALLATION, USE, OR ANY OTHER CAUSES. THERE ARE NO EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.

Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some jurisdictions do not allow limit actions on how long implied warranties may last. Therefore, the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction.

Warnin g Prior to installation, read these installation and

operating instructions. Installation and operation must comply with local regulations and accepted codes of good practice.

38 39

2. Symbols used in this document 3. Abbreviations and definitions

Caution

Note

Warnin g If these safety instructions are not observed,

it may result in personal injury.

Warnin g If these instructions are not observed, it may lead

to electric shock with consequent risk of serious personal injury or death.

Warnin g The surface of the product may be so hot that

it may cause burns or personal injury.

If these safety instructions are not observed, it may result in malfunction or damage to the equipment.

Notes or instructions that make the job easier and ensure safe operation.

AI Analog input. AL Alarm, out of range at lower limit. AO Analog output. AU Alarm, out of range at upper limit. CIM Communication interface module.

Current sinking

Current sourcing

DI Digital input. DO Digital output. ELCB Ground leakage circuit breaker.

GDS

GENIbus Proprietary Grundfos fieldbus standard.

GFCI

GND Ground. Grundfos Eye Status indicator light.

LIVE

PE Protective ground.

PELV

SELV

The ability to draw current into the terminal and guide it towards GND in the internal circuitry.

The ability to push current out of the terminal and into an external load which must return it to GND.

Grundfos Digital Sensor. Factory-fitted sensor in some Grundfos pumps.

Ground fault circuit interrupter. (USA and Canada).

Low voltage with the risk of electric shock if the terminals are touched.

Open collector: Configurable open-collector output.

Protective extra-low voltage. A voltage that cannot exceed ELV under normal conditions and under single-fault conditions, except ground faults in other circuits.

Safety extra-low voltage. A voltage that cannot exceed ELV under normal conditions and under single-fault conditions, including ground faults in other circuits.

English (US)

Note

4. General information

These installation and operating instructions are a supplement to the installation and operating instructions for the corresponding standard pumps CR, CRI, CRN, CRK, SPK, MTR and CM.

For instructions not mentioned specifically in this manual, see the installation and operating instructions for the standard pump.

5. General description

Grundfos E-pumps are fitted with frequency-controlled permanent-magnet motors for single-phase or three-phase power supply connection.

5.1 Pumps without factory-fitted sensor

The pumps have a built-in PI controller and can be set up for an external sensor enabling the control of the following parameters:

• constant pressure

• constant differential pressure

• constant temperature

• constant differential temperature

• constant flow rate

• constant level

• constant curve

• constant other value. The pumps have been factory-set to constant-curve control

mode. The control mode can be changed with the R100 or Grundfos GO Remote.

5.2 Pumps with factory-fitted pressure sensor

The pumps have a built-in PI controller and are set up with a pressure sensor enabling the control of the pump discharge pressure.

The pumps have been factory-set to constant-pressure control mode. The pumps are typically used to keep a constant pressure in variable-demand systems.

5.4 Radio communication

This product incorporates a radio module for remote control. For use in USA and Canada, see page 41.

This product can communicate with the Grundfos GO Remote and other products of the same type via the built-in radio module.

In some cases, an external antenna may be required. Only Grundfos-approved external antennas may be connected to

this product, and only by a Grundfos-approved installer.

5.5 Battery

A Li-ion battery is fitted in CRE, CRIE, CRNE, CRKE, SPKE and MTRE pumps. The Li-ion battery complies with the Battery Directive (2006/66/EC). The battery does not contain mercury, lead and cadmium.

6. Mechanical installation

Warnin g Installation and operation must comply with local

regulations and accepted codes of good practice.

6.1 Mounting

The pump must be secured to a solid foundation by means of bolts through the holes in the flange or baseplate.

In order to maintain the UR mark, follow the additional installation procedures on page 41.

6.2 Cable entries

The motor has four M20 screwed cable entries fitted with blind plugs from factory.

The following cable glands are included:

• 2 x M20 cable gland, sensor/signal cables

• 1 x M20 cable gland, power supply cable.

5.3 Settings

The description of settings applies both to pumps without factory-fitted sensor and to pumps with a factory-fitted pressure sensor.

Setpoint

The desired setpoint can be set in three ways:

• directly on the pump control panel

• via an input for external setpoint signal

• by means of Grundfos wireless remote control R100 or Grundfos GO Remote.

Other settings

All other settings can only be made by means of the R100 or Grundfos GO Remote.

Important parameters, such as actual value of control parameter, power consumption, etc. can be read via the R100 or Grundfos GO Remote.

If special or customized settings are required, use Grundfos PC Tool E-products. Contact your local Grundfos company for more information.

6.3 Ensuring motor cooling

Note

B3 B14 B5

In order to ensure sufficient cooling of the motor, the distance (D) between the end of the fan cover and a wall or other fixed objects must always be at least 2", irrespective of motor size. See fig. 1.

7. 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.

Warnin g Do not make any connections in the terminal box

unless the power supply has been switched off for at least 5 minutes.

Make sure that the power supply cannot be accidentally switched on.

The motor must be ground and protected against indirect contact in accordance with local regulations.

If the power supply cable is damaged, it must be replaced by the manufacturer, the manufacturer's service partner or a similarly qualified person.

English (US)

Fig. 1 Minimum distance (D) from the motor to a wall or other

fixed objects

6.4 Outdoor installation

When installed outdoors, the motor must be provided with a suitable cover to avoid condensation on the electronic components. See fig. 2.

When fitting a cover to the motor, observe the guideline in section 6.3 Ensuring motor cooling.

The cover must be sufficiently large to ensure that the motor is not exposed to direct sunlight, rain or snow. Grundfos does not supply covers. We therefore recommend that you have a cover built for the specific application. In areas with high air humidity, we recommend that you enable the built-in standstill heating function. See section Standstill heating, page 31.

Fig. 2 Examples of covers (not supplied by Grundfos)

6.5 Drain holes

When the motor is installed in moist surroundings or areas with high air humidity, the bottom drain hole should be open.

The enclosure class of the motor will then be lower. The open drain hole helps prevent condensation in the motor as it will make the motor self-venting and allow water and humid air to escape.

The motor has a plugged drain hole on the drive side. The flange can be turned 90 ° to both sides or 180 °.

TM05 5236 3512

The user or the installer is responsible for the installation of correct grounding and protection according to local regulations. All operations must be carried out by a qualified electrician.

7.1 Protection against electric shock, indirect contact

Warnin g The motor must be grounded and protected

against indirect contact in accordance with local regulations.

Protective-ground conductors must always have a yellow/green (PE) or yellow/green/blue (PEN) color marking.

7.1.1 Protection against power supply voltage transients

The motor is protected against power supply voltage transients in accordance with EN 61800-3.

7.1.2 Motor protection

The motor requires no external motor protection. The motor incorporates thermal protection against slow overloading and blocking.

7.1.3 Backup fuses

For recommended fuse sizes, see page 41.

TM05 3496 3512TM02 9037 1604

Fig. 3 Drain holes

English (US)

ELCB

(GFCI)

Caution

Note

ELCB

(GFCI)

7.2 Power supply

7.2.1 Single-phase supply voltage

• 1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE.

Check that the supply voltage and frequency correspond to the values stated on the nameplate.

The wires in the motor terminal box must be as short as possible. Excepted from this is the separated ground conductor which must be so long that it is the last one to be disconnected in case the cable is inadvertently pulled out of the cable entry.

For maximum backup fuse, see section 17.1 Supply voltage.

Fig. 4 Example of a power-connected motor.

7.2.2 Three-phase supply voltage

• 3 x 440-480 V - 10 %/+ 10 %, 50/60 Hz, PE.

In order to avoid loose connections, ensure that the terminal block for L1, L2 and L3 is pressed home in its socket when the supply cable has been connected.

Corner grounding is not allowed for supply voltages above 3 x 480 V, 50/60 Hz.

Check that the supply voltage and frequency correspond to the values stated on the nameplate.

For maximum backup fuse, see section 18.1 Supply voltage.

TM05 4034 1912TM05 3494 1512

TM05 3942 1812TM05 3495 1512

Fig. 6 Example of a power-connected motor

Fig. 5 Power connection, single-phase motors

Fig. 7 Power connection, three-phase motors

7.3 Additional protection

Note

ELCB (GFCI)

Note

7.3.1 Single-phase motors

If the motor is connected to an electric installation where a ground leakage circuit breaker (ELCB) or ground fault circuit interrupter (GFCI) is used as additional protection, this circuit breaker or interrupter must be marked with the following symbol:

When a ground leakage circuit breaker or ground fault circuit interrupter is selected, the total leakage current of all the electrical equipment in the installation must be taken into account.

The leakage current of the motor can be found in section

17.2 Leakage current.

7.3.2 Three-phase motors

• It must be suitable for handling leakage currents and cutting-in with short pulse-shaped leakage.

• It must trips out when alternating fault currents and fault currents with DC content, i.e. pulsating DC and smooth DC fault currents, occur.

For these motors a ground leakage circuit breaker or ground fault circuit interrupter, type B, must be used.

This circuit breaker or interrupter must be marked with the following symbols:

When a ground leakage circuit breaker or ground fault circuit interrupter is selected, the total leakage current of all the electrical equipment in the installation must be taken into account.

The leakage current of the motor can be found in section

18.2 Leakage current.

Protection against phase unbalance

The motor must be connected to a power supply with a quality corresponding to IEC 60146-1-1, class C, to ensure correct motor operation at phase unbalance.

This also ensures long life of the components.

7.4 Connection terminals

The descriptions and terminal overviews in this section apply to both single- and three-phase motors.

For maximum tightening torques, see section Torques, page 39.

7.4.1 Connection terminals, CRE, CRIE, CRNE, CRKE, SPKE and MTRE pumps

CRE, CRIE, CRNE, CRKE, SPKE and MTRE pumps have a number of inputs and outputs enabling the pumps to be used in advanced applications where many inputs and outputs are required.

The pumps have these connections:

• three analog inputs

• one analog output

• two dedicated digital inputs

• two configurable digital inputs or open-collector outputs

• Grundfos Digital Sensor input and output

• two Pt100/1000 inputs

• two LiqTec sensor inputs

• two signal relay outputs

• GENIbus connection.

See fig. 8.

Digital input 1 is factory-set to be start/stop input where open circuit will result in stop. A jumper has been factory-fitted between terminals 2 and

6. Remove the jumper if digital input 1 is to be used as external start/stop or any other external function.

As a precaution, the wires to be connected to the connection groups below must be separated from each other by reinforced insulation in their entire lengths.

• Inputs and outputs

All inputs and outputs are internally separated from the power-conducting parts by reinforced insulation and galvanically separated from other circuits. All control terminals are supplied by safety extra-low voltage (SELV), thus ensuring protection against electric shock.

• Start/stop: (Digital input 1) Terminals 2 and 6

• Pressure sensor: (Analog input 1) Terminals 4 and 8

• Pressure switch: (Digital input 3) Terminals 10 and 6

• External analog signal input: (Analog input 2) Terminals 7 and

• GENIbus Terminals A, Y and B

• Signal relay outputs

– Signal relay 1:

LIVE: Power supply voltages up to 250 VAC can be connected to this output. SELV: The output is galvanically separated from other circuits. Therefore, the supply voltage or safety extra-low voltage can be connected to the output as desired.

– Signal relay 2:

SELV: The output is galvanically separated from other circuits. Therefore, the supply voltage or safety extra-low voltage can be connected to the output as desired.

• Power supply (terminals N, PE, L or L1, L2, L3, PE)

A galvanically safe separation must fulfill the requirements for reinforced insulation including creepage distances and clearances specified in EN 61800-5-1.

English (US)

+24 V*

+24 V*/5 V*

+24 V*

+24 V*/5 V*

+24 V*

+24 V*/5 V*

+24 V*

+5 V*

AI2

GDS RX

GDS TX

GND

GENIbus A

GENIbus B

+5 V

+24 V

GND

GENIbus Y

GND

+5 V

DI1

AI1

DI3/OC1

LiqTec

AI3

GND

DI2

LiqTec

GND

Pt100/1000

DI4/OC2

GND

+24 V*

GND

+5 V*

Terminal Type Function

C1 Common

Normally closed contact

Normally open contact

Signal relay 1 (LIVE or SELV)

C2 Common

Normally closed contact

Normally open contact

Signal relay 2 (SELV only)

18 GND Ground

Digital input/output,

11 DI 4/O C2

configurable. Open collector: Max. 24 V

resistive or inductive. 19 Pt100/1000 input 2 Pt100/1000 sensor input 17 Pt100/1000 input 1 Pt100/1000 sensor input

Analog output: 12 AO

0-20 mA / 4-20 mA

0-10 V

9 GND Ground

Analog input: 14 AI3

0-20 mA / 4-20 mA

0-10 V

1 DI2 Digital input, configurable

21 LiqTec sensor input 1

LiqTec sensor input

(white conductor)

Ground 20 GND

(brown and black

conductors)

22 LiqTec sensor input 2

LiqTec sensor input

(blue conductor)

* If an external supply source is used, there must be a

connection to GND.

Fig. 8 Connection terminals, CRE, CRIE, CRNE, CRKE,

SPKE and MTRE pumps

Digital input/output,

10 DI3/OC1

configurable.

Open collector: Max. 24 V

resistive or inductive.

Analog input:

4AI1

0-20 mA / 4-20 mA

0.5 - 3.5 V / 0-5 V / 0-10 V

TM05 3509 3512

2 DI1 Digital input, configurable

5+5 V

Supply to potentiometer

and sensor

6 GND Ground A GENIbus, A GENIbus, A (+) Y GENIbus, Y GENIbus, GND B GENIbus, B GENIbus, B (-)

3 GND Ground

15 +24 V Supply

8 +24 V Supply

26 +5 V

Supply to potentiometer and sensor

23 GND Ground

25 GDS TX

24 GDS RX

Grundfos Digital Sensor output

Grundfos Digital Sensor input

Analog input:

7AI2

0-20 mA / 4-20 mA

0.5 - 3.5 V / 0-5 V / 0-10 V

7.4.2 Connection terminals, CME pumps

Note

The CME pump has these connections:

• two analog inputs

• two digital inputs or one digital input and one open-collector output

• Grundfos Digital Sensor input and output

• two signal relay outputs

• GENIbus connection.

See fig. 9.

Digital input 1 is factory-set to be start/stop input where open circuit will result in stop. A jumper has been factory-fitted between terminals 2 and

6. Remove the jumper if digital input 1 is to be used as external start/stop or any other external function.

As a precaution, the wires to be connected to the connection groups below must be separated from each other by reinforced insulation in their entire lengths.

• Inputs and outputs All inputs and outputs are internally separated from the power conducting parts by reinforced insulation and galvanically separated from other circuits. All control terminals are supplied by safety extra-low voltage (SELV), thus ensuring protection against electric shock.

• Start/stop: (Digital input 1) Terminals 2 and 6

• Pressure sensor: (Analog input 1) Terminals 4 and 8

• Pressure switch: (Digital input 3) Terminals 10 and 6

• External analog signal input: (Analog input 2) Terminals 7 and 23

• GENIbus Terminals A, Y and B

• Signal relay outputs

– Signal relay 1:

– Signal relay 2:

SELV: The output is galvanically separated from other circuits. Therefore, the supply voltage or safety extra-low voltage can be connected to the output as desired.

• Power supply (terminals N, PE, L or L1, L2, L3, PE)

A galvanically safe separation must fulfill the requirements for reinforced insulation including creepage distances and clearances specified in EN 61800-5-1.

English (US)

AI2

GDS RX

GDS TX

GND

GENIbus A

GENIbus B

+5 V

+24 V

GND

GENIbus Y

GND

+5 V

DI1

AI1

DI3/OC1

+24 V*

+24 V*/5 V*

+24 V*

+5 V*

+24 V*

+24 V*/5 V*

+24 V*

GND

Terminal Type Function

C1 Common

Normally closed contact

Normally open contact

Signal relay 1 (LIVE or SELV)

* If an external supply source is used, there must be a

connection to GND.

Fig. 9 Connection terminals, CME pump

C2 Common

Normally closed contact

Normally open contact

Signal relay 2 (SELV only)

Digital input/output,

10 DI3/OC1

configurable. Open collector: Max. 24 V resistive or inductive.

Analog input:

4AI1

0-20 mA / 4-20 mA

0.5 - 3.5 V / 0-5 V / 0-10 V

2 DI1 Digital input, configurable

5+5 V

Supply to potentiometer and sensor

6 GND Ground A GENIbus, A GENIbus, A (+) Y GENIbus, Y GENIbus, GND B GENIbus, B GENIbus, B (-)

3 GND Ground

15 +24 V Supply

TM05 3510 3512

8 +24 V Supply

26 +5 V

Supply to potentiometer and sensor

23 GND Ground

25 GDS TX

Grundfos Digital Sensor output

24 GDS RX Grundfos Digital Sensor input

Analog input:

7AI2

0-20 mA / 4-20 mA

0.5 - 3.5 V / 0-5 V / 0-10 V

7.5 Signal cables

Dry-running sensor

Set to automatic resetting

Connection terminals on E-pump:

2 (Start/Stop) and 6 (GND)

1 x 200-240 VAC

1 X 80-130 VAC

Brown

Black

Blue

White

Jumper cable

• Use screened cables with a conductor cross-section of min. 28 AWG and max. 16 AWG for external on/off switch, digital inputs, setpoint and sensor signals.

• Connect the screens of the cables to frame at both ends with good connection. The screens must be as close as possible to the terminals. See fig. 10.

Fig. 10 Stripped cable with screen and wire connections

7.6 E-pump electrical connections

7.6.1 Connection of E-pump to Danfoss pressure sensor MBS3000

The blue wire of the pressure sensor is connected to the #4 terminal of the E-pump. The brown wire of the pressure sensor is connected to the #8 terminal of the E-pump.

See section 7.5 Signal cables on or additional details.

TM02 1325 4402

English (US)

• Always tighten screws for frame connections whether a cable is fitted or not.

• Make the wires in the motor terminal box as short as possible.

7.6.2 Connection of E-pump to LiqTec

TM05 1533 2911

Fig. 11 Danfoss pressure sensor

Fig. 12 Connection of E-pump to LiqTec

TM03 0437 5104

English (US)

Motor

Caution

0.99

0.98

0.97

0.96

0.95

0.94

0.93

0.92

0.91

0.90

0.89

0.88

3281 3937 4593 5249 5906 6562 7218

[ft]

P2 [%]

7.7 Bus connection cable

7.7.1 New installations

For the bus connection, use a screened 3-core cable with a conductor cross-section 28-16 AWG.

• If the motor is connected to a unit with a cable clamp which is identical to the one on the motor, connect the screen to this cable clamp.

• If the unit has no cable clamp as shown in fig. 13, leave the screen unconnected at this end.

Fig. 13 Connection with screened 3-core cable

7.7.2 Replacing an existing motor

• If a screened 2-core cable is used in the existing installation, connect it as shown in fig. 14.

8. Operating conditions

8.1 Maximum number of starts and stops

The number of starts and stops via the power supply must not exceed four times per hour.

When switched on via the power supply, the pump will start after approx. 5 seconds.

If a higher number of starts and stops is desired, use the input for external start/stop when starting/stopping the pump.

When started via an external on/off switch, the pump will start immediately.

8.2 Ambient temperature

8.2.1 Ambient temperature during storage and transportation

Minimum -22 °F Maximum +140 °F.

8.2.2 Ambient temperature during operation

Minimum -4 °F

TM05 3973 1812TM02 8842 0904

Maximum -122 °F. The motor can operate with the rated power output (P2) at 122 °F,

but continuous operation at higher temperatures will reduce the expected product life. If the motor is to operate at ambient temperatures between 122 and 140 °F, an oversized motor must be selected. Contact Grundfos for further information.

8.3 Installation altitude

The motor must not be installed more than 6560 ft above sea level.

Installation altitude is the height above sea level of the installation site.

• Motors installed up to 3280 ft above sea level can be loaded 100 %.

• Motors installed more than 3280 ft above sea level must not

Fig. 14 Connection with screened 2-core cable

• If a screened 3-core cable is used in the existing installation,

be fully loaded due to the low density and consequent low cooling effect of the air. See fig. 15.

follow the instructions in section 7.7.1 New installations.

TM05 6400-U.S. 1013

Fig. 15 Derating of motor output power (P2) in relation to

altitude above sea level

8.4 Air humidity

Max.

Min.

Maximum air humidity: 95 %. If the air humidity is constantly high and above 85 %, the drain

holes in the drive-end flange should be open. See section 6.5 Drain holes.

8.5 Motor cooling

To ensure cooling of motor and electronics, the following must be observed:

• Position the motor in such a way that adequate cooling is

ensured. See section 6.3 Ensuring motor cooling.

• The temperature of the cooling air must not exceed 122 °F.

• Keep cooling fins and fan blades clean.

9. Operating and control modes

Grundfos E-pumps are set and controlled according to operating and control modes.

9.1 Overview

Operating modes

Normal

Stop

Min.

Max.

Manual

Control modes

Constant pressure

Constant differential pressure

Constant temperature

9.2 Operating mode

When the operating mode is set to "Normal", the control mode can be set to constant curve or any other control mode.

See section 9.3 Control mode. Other operating modes:

•Stop The pump has been stopped.

•Min. The pump is operating at its minimum speed.

•Max. The pump is operating at its maximum speed.

• Manual The pump is operating at a manually set speed.

Figure 16 illustrates the min. and max. curves.

Fig. 16 Min. and max. curves

The max. curve can for instance be used in connection with the venting procedure during installation.

The min. curve can be used in periods in which a minimum flow is required.

If the power supply to the pump is disconnected, the setting of operating mode will be stored.

English (US)

TM00 5547 0995

Constant differential temperature

Constant flow rate

Constant level

Constant curve

Constant other value

Example

If the pump is fitted with a pressure sensor, the control mode must be set to constant pressure. If the pump is for instance fitted with a temperature sensor, the control mode should be constant temperature. See section 9.3 Control mode for further information.

English (US)

set

Stop

9.3 Control mode

9.3.1 Pumps without factory-fitted sensor

The pumps have been factory-set to constant-curve control mode.

In this control mode, the pump will operate according to the constant curve set. See fig. 17.

Fig. 17 Pump in constant-curve control mode

Factory setting

Pumps supplied without sensor have been factory-set to constant-curve control mode.

The setpoint value corresponds to 100 % of the maximum pump performance. See data booklet or WebCAPS.

9.3.2 Pumps with factory-fitted pressure sensor

The pressure sensor is fitted on the pump discharge side, and the pump is set to constant pressure.

In this control mode, the pump will adjust its performance, i.e. pump discharge pressure, to the desired setpoint (H

18.

). See fig.

set

10. User interfaces

Warnin g The product may be so hot that only the buttons

should be touched to avoid burns.

Pump settings can be made by means of the following user interfaces:

Control panel

• Standard control panel. See section 10.1 Standard control panel.

Remote controls

• Grundfos R100 remote control. See section 10.3 R100 remote control.

• Grundfos GO Remote. See section 10.4 Grundfos GO Remote.

If the power supply to the pump is switched off, the settings will be stored.

TM05 6403 4712TM05 6398 4712

10.1 Standard control panel

TM05 4848 3512

Fig. 19 Standard control panel

Pos. Symbol Description

Grundfos Eye

Shows the operating status of the pump. See section 14. Grundfos Eye for further information.

2 - Light fields for indication of setpoint.

Fig. 18 Pump in constant-pressure control mode

Factory setting

Pumps supplied with pressure sensor have been factory-set to constant-pressure control mode.

The setpoint value corresponds to 50 % of the sensor measuring range. See sensor nameplate.

3 Changes the setpoint.

Enables radio communication with the

Grundfos GO Remote and other products of the same type.

Makes the pump ready for operation/starts and stops the pump.

Start:

If the button is pressed when the pump is stopped, the pump will only start if no other functions with higher priority have been

enabled. See section 13. Priority of

settings.

Stop:

If the button is pressed when the pump is running, the pump will always be stopped. When the pump is stopped via this button, the "Stop" text next to the button will illuminate.

+ 30 hidden pages

Grundfos CRE Series, CRIE Series, CRNE Series, SPKE Series, MTRE Series Installation And Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual