![background image](http://html2.mh-extra.com/html/zero-gravity/phoenix/phoenix_operating-and-maintenance-manual_3467857013.webp)
13
b.
Backwash Interval Timer (marked
TIME) -This timer is used to set the
maximum time between each
backwash. There are six set-points
ranging from 1 minute to 24 hours,
please refer to Section 2.3.
c.
Terminal connectors labeled as follows:
DPSW LOW:
To connect from the DP’s ‘Normally Closed’ and ‘Common’ contacts to terminals
1 and 2 on the circuit board.
PWR 24V
For connecting the power supply: Note the (+) and (–) must be connected
correctly. Failure to do so, will result in malfunction of the filter.
WASH N.O.
Volt free contacts providing remote indication when the filter is in backwash mode.
The contacts are normally open and have a maximum load of
½
Amp.
FAULT N.O.
Volt free contacts providing remote indication when the filter is in a fault condition.
The contacts are normally open and have a maximum load of
½
Amp.
DPSW HIGH
For connecting an optional second set of DP contacts for indication of high DP
across the filter. Connect from the second set of ‘Normally Closed’ and ‘Common’
contacts on the DP switch to terminals 9 and 10 on the circuit board.
BACK WASH
Provides 24 VDC power to the pneumatic actuator fitted to the backwash valve.
d.
Motor Connector – This connection is made between the circuit board and the motor.
e.
Display Board Connector – This connection is made between the circuit board and
the top circuit board located on the control cover, refer to Section 1.8.1.
1.9 Differential Pressure (DP) Switch
A (DP) switch is provided and is mounted to the bracket on the filter (see ‘Installation
Guide’). The DP switch is connected hydraulically to the common inlet and discharge of the
filter, and electrically to terminals on the control circuit board.
2.0 Operating Guidelines
Before operating the filter, ensure that it has been installed per the INSTALLATION GUIDE
provided. Failure to do so could affect the filter’s performance and void the filter’s warranty.
2.1 Filter Operation