MINIPACK
X:/Aquatech-Pressmain Instruction manuals/current/MINIPACK
16
2.3.4 ENHANCED “-E” CONTROLLER OPERATION
The control is by AquaTech-Pressmain “2020Plus” Microprocessor, with a 2-line by 20 or 24 character display on the
control panel, showing the current system pressure and status.
When switched on the display shows,
then self-checks, flashing all LED lights on keypad,
and identifies configuration for pump operation
(e.g. “MP” pressurisation unit)
followed by the system status and pressure
For “normal” operation, all Hand/Off/Auto switches should be left in “Auto”, all isolating valves should be left open, all
hydraulic accumulator/expansion vessel isolating valves should be left open, and drain cock/valves should be left
closed. Should it be necessary to have a situation that is not “normal” operation, then we would strongly recommend
attendance to site by our trained/authorised service personnel. Please contact AquaTech-Pressmain for more details.
Pump Operation
Sealed system pressurisation unit; All Models:
The pressurisation unit automatically maintains a minimum set pressure, the “Cold Fill” pressure, in a heating or chilled
system by transferring make-up liquid from a breaktank, into the system. When the system pressure falls below the
required level the Duty pump automatically refills the system until the pressure is restored. If the Duty Pump fails to
maintain the required pressure the Support pump (where fitted) will operate in addition to the Duty Pump.
Duty Pump Rotation.
To spread the wear evenly across both pumps (where fitted), their sequence is
automatically rotated either by starting the pump that has been idle the longest and/or by timed operation (dependent
upon unit type).
Indicator lights (where fitted) on the fascia show which pump is running.
Automatic Restart (when “manual restart” is set to “not enabled” on 2020 Plus controller)
If there is an interruption to the electrical supply the unit will automatically restart on restoration of the supply.
Pumps will restart at timed intervals.
Manual Restart (when set to “enabled” on 2020 Plus controller)
If there is an interruption to the electrical supply, or there is a low water level condition, the unit will need to be
manually reset on restoration of the supply, or low water level condition, by pressing the “Reset Alarm” key. Pumps
will then restart at timed intervals.
Pressure setting.
The pumpset is set at the default 'duty/cold fill' pressure at the factory. If necessary, the
pressure will be adjusted at commissioning to suit local conditions.
To view the parameters (Enhanced controller only)
Press <SET/VIEW> on the keypad. Then, press the same key
4
more times.
Press the <UP> (7) key, to view the next parameter.
Page through the parameters by using the <UP> (7) and <DOWN> (8) keys to view:
Various parameters will be displayed dependent upon unit type. The main parameters that customers are interested in
are shown on the following page.
Date and Time (24 hour clock)
not password protected to allow
on site adjustment.
Fault Log (last 30 faults)
press <view> to see log followed
by <up> (7) or <down> (8) to view
log.
press <enter> to return
Manual Restart upon power failure
not password protected to
AQUATECH 2020Plus V5.01
PRESSMAIN
MP
Time
14/01/15…….22:40:15
Fault Log
PRESSURE SYSTEM IS O.K.
Pressure ………… bar
Manual Restart
Not enabled
