Grundfos Fire RS Installation And Operating Instructions Manual Download Page 6

English (GB)  

Note  

 .  

4.3.4 Inputs and outputs 
Inputs 

The controller has six digital inputs. See table below. The table  

also states terminal designations and the status when activated.  

Designation Digital input 

Terminal  

DI1  

DI2  

DI3  

DI4  

DI5  

DI6  

Pressure switch 1 for  

main pump  
Pressure switch 2 for  

main pump  
Priming tank level switch  

(for starting the pump)  
Additional pressure  

switch for “Pump  

running” indication  

(pressure in the  

discharge line)  
Pressure switch for  

jockey pump  
Dry run switch for jockey  

pump  

Upon  

activation  

6 + 7 

Open  

8 + 9 

Open  

10 + 11 

Closed  

12 + 13 

Closed  

2 + 52 

Closed  

53 + 54 

Open  

The digital inputs are not short-circuit proof. 

Outputs 

The controller has five digital outputs which are potential-free  

changeover contacts. The signals from the digital outputs can be  

passed on to a building management system.  

Designation Digital output 

Terminal  

AR1  

AR2  

Alarm, power supply to  

controller  
Automatic pump  

requirement  

Upon  

activation  

31 + 32 

Open  

33 + 34 

Closed  

AR3 

Main pump running 

35 + 36 

Closed  

AR4  

Alarm, power supply to  

motor  

37 + 38 

Closed  

AR5 

Failure to start 

39 + 40 

Closed  

6  

4.4 Functions 

4.4.1 Operating functions 
Automatic operation of the main pump  

Automatic operation is the normal operating  

mode. For this mode, the selector switch for the  

system must be set to “AUT”.  

When the extinguishing water booster set is in automatic mode,  

only the green “POWER SUPPLY” indicator light in the control  

panel is on. All other alarm and status indicator lights should be  

off. 
As soon as the sprinklers are activated and water is consumed,  the 

pressure in the discharge pipe is reduced. If the pressure falls  be-

low the cut-in pressure set on the corresponding pressure  switch, 

the main pump will start automatically. The “PUMP  RUNNING” indi-

cator light will light up, and the AR3 digital output  will be activated. 

Furthermore, the “PUMP ON DEMAND”  indicator light will light up, 

and the AR2 digital output will be  activated. 
If the main pump set cannot start due to a fault, the yellow  “START 

FAILURE” indicator light will light up, and the AR5 digital  output will 

be activated. The alarm indication will be reset  automatically, when 

the fault has disappeared. 
It is only possible to stop the main pump manually by setting the  

selector switch to “0” and pressing [Stop]. 
For safety reasons, a redundant pressure switch should always  

be connected in addition to the primary pressure switch.  
See also section 

12.1 Automatic operation

Manual operation of the main pump 

During start-up and for test purposes, the main pump can be  

started manually by turning the selector switch for the main pump  

to “TEST” and pressing [Start]. When [Start] is pressed, the start  

relay is activated by bypassing the pressure switch in the  discharge 

line. The red “PUMP RUNNING” indicator light will light  up, and the 

AR3 digital output will be activated. In manual mode,  the “PUMP 

ON DEMAND” indicator light does not light up, and  the AR2 digital 

output will be deactivated. To switch off the pump press the [Stop] 

button. 
To restore automatic mode, the selector switch for the main pump  

must be turned back to “AUT” position. 
See also section 

12.2.2 Main pump

Pressure switch test 

The pressure switch function for the main pump can be tested 

by  means of [P1] and [P2]. To do this, turn the selector switch to  

“TEST” position. During the testing procedure, the corresponding  

indicator light will light up alongside the respective button. See  also 

section 

12.3 Test run

Indicator light test  

It is possible to carry out an indicator light test. To test the  function 

of the indicator lights of the control panel, press   

See also section 

14.2 Control cabinet

Auto-

matic operation of the jockey pump 

If there are some small leakages in the pipework or as soon as  the 

sprinklers are activated and water is consumed, the pressure  in the 

discharge pipe is decreasing. If the pressure falls below the  cut-in 

pressure set on the corresponding pressure switch, the  jockey 

pump will start automatically and the green “JOCKEY  RUN” indica-

tor light will light up. The jockey pump should always  start before 

the main pump. 
If the jockey pump set cannot start due to a fault, the red  

“JOCKEY ALARM” indicator light will light up. The alarm  

indication will be reset automatically, when the fault has  

disappeared. 
If the pressure in the discharge pipe reaches the cut-out pressure  

again, the jockey pump stops. However, it is also possible to stop  

the jockey pump manually by turning the selector switch for the  

jockey pump to “0” position. 
See also section 

12.1 Automatic operation  

Pos. Designation

F1 

Main fuse

FA2 Fuse for 24 V control circuit
FA3 Fuse for 230 V control circuit

FV 

Fuse for transformer

K1L Mains contactor
K1D Delta contactor
K1Y Star contactor
KA1 Relay for monitoring of control voltage
KT0 Time relay (optional)
KT1 Time relay

KSFL Phase-monitoring relay

KSFM Phase-monitoring relay for motor terminals

PE 

Protective conductor bar

Q1 

Main switch

TA 

Current transformer for measuring the motor current

TR 

Transformer (400/24 V) for control voltage

TR1 Transformer (400/230 V) for control voltage

English 

(G

B)

6

4.3.4 Inputs and outputs
Inputs
The controller has six digital inputs. See table below. The table 

also states terminal designations and the status when activated.

The digital inputs are not short-circuit proof.
Outputs
The controller has five digital outputs which are potential-free 

changeover contacts. The signals from the digital outputs can be 

passed on to a building management system.

4.4 Functions

4.4.1 Operating functions
Automatic operation of the main pump

When the extinguishing water booster set is in automatic mode, 

only the green "POWER SUPPLY" indicator light in the control 

panel is on. All other alarm and status indicator lights should be 

off.
As soon as the sprinklers are activated and water is consumed, 

the pressure in the discharge pipe is reduced. If the pressure falls 

below the cut-in pressure set on the corresponding pressure 

switch, the main pump will start automatically. The "PUMP 

RUNNING" indicator light will light up, and the AR3 digital output 

will be activated. Furthermore, the "PUMP ON DEMAND" 

indicator light will light up, and the AR2 digital output will be 

activated.
If the main pump set cannot start due to a fault, the yellow 

"START FAILURE" indicator light will light up, and the AR5 digital 

output will be activated. The alarm indication will be reset 

automatically, when the fault has disappeared.
It is only possible to stop the main pump manually by setting the 

selector switch to "0" and pressing [Stop].
For safety reasons, a redundant pressure switch should always 

be connected in addition to the primary pressure switch. 
See also section 

12.1 Automatic operation

.

Manual operation of the main pump
During start-up and for test purposes, the main pump can be 

started manually by turning the selector switch for the main pump 

to "TEST" and pressing [Start]. When [Start] is pressed, the start 

relay is activated by bypassing the pressure switch in the 

discharge line. The red "PUMP RUNNING" indicator light will light 

up, and the AR3 digital output will be activated. In manual mode, 

the "PUMP ON DEMAND" indicator light does not light up, and 

the AR2 digital output will be deactivated.
To switch off the pump press the [Stop] button.
To restore automatic mode, the selector switch for the main pump 

must be turned back to "AUT" position.
See also section 

12.2.2 Main pump

.

Pressure switch test
The pressure switch function for the main pump can be tested by 

means of [P1] and [P2]. To do this, turn the selector switch to 

"TEST" position. During the testing procedure, the corresponding 

indicator light will light up alongside the respective button. See 

also section 

12.3 Test run

.

Indicator light test
It is possible to carry out an indicator light test. To test the 

function of the indicator lights of the control panel, press 

.

See also section 

14.2 Control cabinet

.

Automatic operation of the jockey pump
If there are some small leakages in the pipework or as soon as 

the sprinklers are activated and water is consumed, the pressure 

in the discharge pipe is decreasing. If the pressure falls below the 

cut-in pressure set on the corresponding pressure switch, the 

jockey pump will start automatically and the green "JOCKEY 

RUN" indicator light will light up. The jockey pump should always 

start before the main pump.
If the jockey pump set cannot start due to a fault, the red 

"JOCKEY ALARM" indicator light will light up. The alarm 

indication will be reset automatically, when the fault has 

disappeared.
If the pressure in the discharge pipe reaches the cut-out pressure 

again, the jockey pump stops. However, it is also possible to stop 

the jockey pump manually by turning the selector switch for the 

jockey pump to "0" position.
See also section 

12.1 Automatic operation

Pos.

Designation

F1

Main fuse

FA2

Fuse for 24 V control circuit

FA3

Fuse for 230 V control circuit

FV

Fuse for transformer

K1L

Mains contactor

K1D

Delta contactor

K1Y

Star contactor

KA1

Relay for monitoring of control voltage

KT0

Time relay (optional)

KT1

Time relay

KSFL Phase-monitoring relay

KSFM Phase-monitoring relay for motor terminals

PE

Protective conductor bar

Q1

Main switch

TA

Current transformer for measuring the motor current

TR

Transformer (400/24 V) for control voltage

TR1

Transformer (400/230 V) for control voltage

Designation Digital input

Terminal

Upon

activation

DI1

Pressure switch 1 for 

main pump

6 + 7

Open

DI2

Pressure switch 2 for 

main pump

8 + 9

Open

DI3

Priming tank level switch 

(for starting the pump)

10 + 11

Closed

DI4

Additional pressure 

switch for "Pump 

running" indication 

(pressure in the 

discharge line)

12 + 13

Closed

DI5

Pressure switch for 

jockey pump

2 + 52

Closed

DI6

Dry run switch for jockey 

pump

53 + 54

Open

Designation Digital output

Terminal

Upon

activation

AR1

Alarm, power supply to 

controller

31 + 32

Open

AR2

Automatic pump 

requirement

33 + 34

Closed

AR3

Main pump running

35 + 36

Closed

AR4

Alarm, power supply to 

motor

37 + 38

Closed

AR5

Failure to start

39 + 40

Closed

Note

Automatic operation is the normal operating 

mode. For this mode, the selector switch for the 

system must be set to "AUT".

Summary of Contents for Fire RS

Page 1: ...Fire CONTROLLER Installation and operating instructions GRUNDFOS INSTRUCTIONS SS EN12845 SS 883001 INSTA 900...

Page 2: ...Person authorised to compile technical file and empowered to sign the EC declaration of conformity Declaration of conformity 2 Declaration of conformity GB EC declaration of conformity We Grundfos de...

Page 3: ...tomatic water supply and pressure boosting of fire protection appliances in small residential buildings The extinguishing water booster set is designed for the direct connection to the water supply ne...

Page 4: ...English GB 4...

Page 5: ...meter S1 Selector switch TEST 0 AUT main pump SA1 Selector switch MAN 0 AUT jockey pump Q1 Main switch English GB 5 4 3 Controller 4 3 1 General description The Fire RS extinguishing water booster set...

Page 6: ...tor current TR Transformer 400 24 V for control voltage TR1 Transformer 400 230 V for control voltage English GB 6 4 3 4 Inputs and outputs Inputs The controller has six digital inputs See table below...

Page 7: ...7 Rated voltage 8 Nominal frequency 9 Max current 10 Rated short circuit current 11 Protection class English GB 7 Manual operation of the jockey pump During start up and for test purposes the jockey p...

Page 8: ...ining additives 7 2 Maximum operating pressure The maximum operating pressure of the extinguishing water booster set is limited to 12 bar by a safety valve However some of the CR pumps are designed fo...

Page 9: ...g factors must be multiplied 0 89 x 0 89 0 79 9 1 0 37 0 55 2 0 75 22 3 30 E n g l is h G B 9 Relation between steam pressure scale and liquid temperature tm Fig 5 Steam pressure scale 7 4 Maximum per...

Page 10: ...or lights Fig 8 Control panel 8 1 Button functions Button Description 10 Indicator light test English GB 10 8 Control panel The control panel is divided into three areas operating buttons status indic...

Page 11: ...tus Text Potential free signal The jockey pump is running automatic or manual start On JOCKEY RUN 11 English GB 11 8 2 Status indications The operating status of the main pump and the controller is in...

Page 12: ...atus Text Potential free signalling The jockey pump does not start due to a fault On JOCKEY ALARM 12 English GB 12 8 3 Fault indications Faults of the main pump are indicated by means of the two indic...

Page 13: ...manifolds of the extinguishing wa ter booster set Use the end not closed by a screw cap or blanking flange Arrows on the pump base show the direction of flow of water through the pump Secure the pipes...

Page 14: ...he isolating valve on the suction side of the main pump Open both isolating valves of the bypass line English GB 14 10 2 Electrical connection Check that the supply voltage and frequency correspond to...

Page 15: ...rect direction of rotation is indicated by arrows on the fan cover of the motor Step Illustration 15 English GB 15 5 Turn the selector switch for the jockey pump to MAN position The jockey pump will s...

Page 16: ...ng the main switch to OFF position To restart the system the main switch must be set to I again English GB 16 12 Operation Status and alarm messages are indicated via indicator lights in the control p...

Page 17: ...valve on the discharge manifold After stopping the pump set returns to automatic mode 17 English GB 17 12 2 Manual operation Both pumps can also be started and stopped manually for a functional test a...

Page 18: ...ection 15 Fault finding 18 Stopping procedure After stopping the main pump is in automatic mode again English GB 18 12 2 2 Main pump Starting procedure Stopping procedure Step Illustration 1 Turn the...

Page 19: ...pump Step Illustration 6 Switch off the main pump again as described in section 12 2 2 Main pump 19 English GB 19 12 3 Test run In this section the testing of the function of the two pressure switches...

Page 20: ...e isolating valve on the discharge manifold 2 Close the isolating valve on the suction manifold English GB 20 13 Shut down If pumps are not used during periods of frost they must be drained to avoid d...

Page 21: ...essure switch for dry run protection or mount a bridge with a cable between the terminals 53 and 54 21 English GB 21 15 Fault finding Warning Only trained personnel are allowed to open the cabinet doo...

Page 22: ...rrectly Set the pressure switches correctly Close the ball valves for testing the pressure switches English GB 22 7 Jockey pump does not start in manual mode despite power supply a Selector switch for...

Page 23: ...ection service 2 If this is not possible contact the nearest Grundfos company or service workshop 23 English GB 23 16 Service accessories spare parts The installation and or use of such products may n...

Page 24: ...Appendix NPSH 24 TM02 7387 3403 TM01 9882 3801 TM01 9883 3300 TM01 9884 3801 TM02 7125 2703 TM02 7126 2703 TM02 7127 2703 TM01 1934 0899 TM01 1935 0899 Appendix 1...

Page 25: ...25 25...

Page 26: ...26 26...

Page 27: ...n 38a Oybek street Tashkent 998 71 150 3290 71 150 3291 998 71 150 3292 Addresses Revised 24 01 2014 Grundfos companies Argentina Bombas GRUNDFOS de Argentina S A Ruta Panamericana km 37 500 Centro In...

Page 28: ...os Holding A S or Grundfos A S Denmark All rights reserved worldwide Copyright Grundfos Holding A S XXXXXXX 98598034 1213 ECM XXXXXXX The name Grundfos the Grundfos logo and be think innovate are regi...

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