GRUNDFOS
INSTRUCTIONS
www.grundfos.co.uk
Page 7 of 35
6.6 Controller
The Controller has been specifically designed by Grundfos to conform with BS 9251:2014,
integrate key system signals, monitor condition and to operate automatically.
The following are features of the
FireSAFE
controller:
Modes of operation:
o
Pressure maintenance
o
Fire
o
Service
Integration of digital signals:
o
Low water level
o
Flow switch
Mains power monitoring / Controller internal fuse monitoring
Semi-automatic learning of the pump condition
Automatic weekly pump health test, including:
o
Pump fault monitoring
o
Pump health monitoring
Manual pump health test
Setting of the Automatic weekly pump test time
Annual service reminder (12 months from system verification)
Excessive pump operation / Leak detection (> 10 operations in a 7 day period)
7.0 Description of Controller features
7.1 Modes of operation
The
FireSAFE
unit can operate in one of three modes:
Mode 1 – System Pressure Maintenance (or “Jockey Pump”)
Mode 2 – Fire
Mode 3 – Service
Mode 1 – System pressure maintenance (or Jockey Pump) mode
If the system pressure decays enough to activate the integral primary pressure switch, the
FireSAFE
unit will run the pump for 20 seconds. This will be sufficient to re-pressurise the
system.
The maximum number of maintenance cycles within a 7 day period before the system registers
this as a fault is ten. This excludes the automatic weekly pump self-tests.
On exceeding this the Fault LED on the Control panel and Fault Digital output (D01) are
activated requiring attendance to reset.
