Grundfos Fire RS Installation And Operating Instructions Manual Download Page 5

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English (GB)

SA1

H12

H13

The control elements and signal lamps have the following

functions:

Control panel (A1)

The control panel contains the buttons required for control and

various indicator lights. The control panel is described in section

Control panel

Signal lamp “Jockey pump is running” (H12)

The green indicator light is on when the pump is running.

Signal lamp “Alarm jockey pump” (H13)

The red indicator light is on when there is a fault preventing the

jockey pump to start.

Ammeter (PA)

The ammeter shows the actual current consumption of the

electric motor.

Selector switch for main pump (S1)

The switch is used to stop the main pump after a manual or auto-

matic start (position “0”) and to select the operating mode. In

“AUT” position the main pump is in automatic mode and in
“TEST” position in manual mode to start the main pump for a test

run or during commissioning. The selector switch should be locked

to prevent unauthorised activation. When the main switch is set to

“I”, the power supply to the electric motor is provided via the selec-

tor switch.

Selector switch for jockey pump (SA1)

The switch is used to stop the jockey pump after a manual or auto-

matic start (position “0”) and to select the operating mode. In

“AUT” position the jockey pump is in automatic mode and in
“MAN” position in manual mode to start the jockey pump for a test

run or during commissioning.

Main switch

The main switch is used to switch on the power supply to the

control cabinet.

4.3.3 Main components in control cabinet

The main components in the control cabinet are shown in fig.

Fig. 3

Main components in control cabinet

TM05 0742 151

4.3 Controller

4.3.1 General description

The Fire RS extinguishing water booster set is operated via a

controller especially designed for this purpose. The controller is

for monitoring and for switching on both pumps automatically. The

controller is placed in a control cabinet being delivered separately

for wall mounting.
In case of small leakages the jockey pump starts automatically

when the pressure is lower than the pressure set on the pressure

switch for the jockey pump. If the stop pressure is reached the

jockey pump stops again.
As soon as the sprinklers are activated and water is consumed, the

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

lower than the starting pressure set on the pressure switches, the

jockey pump will start automatically first and then the main pump

via the corresponding pressure switches. The pressure switch for

the main pump must be set to a higher start pressure than the pres-

sure switch for the jockey pump. Both pumps are stopped manually

via the controller. For safety reasons, a redundant pressure switch

is connected in addition to the pressure switch for the main pump.
Manual pump operation is provided via a manual switch for com-

missioning, servicing and testing for both pumps. In case of dry

running the jockey pump will be stopped by the pressure switch

mounted at the suction manifold. A dry running for the main pump

is not possible, as the main pump should not stop for any reason

in case of fire.
The controller is operated by means of the control panel and the

manual switches in the cabinet door.

4.3.2 Control elements and indicating instruments

All controls and indicating instruments are placed in the cabi-

net door. See fig.

. The control panel is described in section

Control panel

Fig. 2

Control elements and indicating instruments in the

control cabinet door

TM05 8925 2913

Pos. Description

Control panel

H12

Signal lamp”Jockey pump is running”

H13

Signal lamp “Alarm jockey pump”

PA Ammeter
S1

Selector switch (TEST-0-AUT), main pump

SA1

Selector switch (MAN-0-AUT), jockey pump

Main switch

English

(GB)

4.3 Controller

4.3.1 General description
The Fire RS extinguishing water booster set is operated via a

controller especially designed for this purpose. The controller is

for monitoring and for switching on both pumps automatically.
The controller is placed in a control cabinet being delivered

separately for wall mounting.
In case of small leakages the jockey pump starts automatically

when the pressure is lower than the pressure set on the pressure

switch for the jockey pump. If the stop pressure is reached the

jockey pump stops again.
As soon as the sprinklers are activated and water is consumed,

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

becomes lower than the starting pressure set on the pressure

switches, the jockey pump will start automatically first and then

the main pump via the corresponding pressure switches. The

pressure switch for the main pump must be set to a higher start

pressure than the pressure switch for the jockey pump.
Both pumps are stopped manually via the controller. For safety

reasons, a redundant pressure switch is connected in addition to

the pressure switch for the main pump.
Manual pump operation is provided via a manual switch for

commissioning, servicing and testing for both pumps.
In case of dry running the jockey pump will be stopped by the

pressure switch mounted at the suction manifold. A dry running

for the main pump is not possible, as the main pump should not

stop for any reason in case of fire.
The controller is operated by means of the control panel and the

manual switches in the cabinet door.
4.3.2 Control elements and indicating instruments
All controls and indicating instruments are placed in the cabinet

door. See fig.

. The control panel is described in section

8. Control panel

Fig. 2 Control elements and indicating instruments in the

control cabinet door

The control elements and signal lamps have the following

functions:
Control panel (A1)
The control panel contains the buttons required for control and

various indicator lights. The control panel is described in section

8. Control panel

Signal lamp "Jockey pump is running" (H12)
The green indicator light is on when the pump is running.
Signal lamp "Alarm jockey pump" (H13)
The red indicator light is on when there is a fault preventing the

jockey pump to start.
Ammeter (PA)
The ammeter shows the actual current consumption of the

electric motor.
Selector switch for main pump (S1)
The switch is used to stop the main pump after a manual or

automatic start (position "0") and to select the operating mode. In

"AUT" position the main pump is in automatic mode and in

"TEST" position in manual mode to start the main pump for a test

run or during commissioning. The selector switch should be

locked to prevent unauthorised activation. When the main switch

is set to "I", the power supply to the electric motor is provided via

the selector switch.
Selector switch for jockey pump (SA1)
The switch is used to stop the jockey pump after a manual or

automatic start (position "0") and to select the operating mode. In

"AUT" position the jockey pump is in automatic mode and in

"MAN" position in manual mode to start the jockey pump for a test