MINIPACK
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15
2.2 COMMISSIONING
Whilst this set has been tested in the factory to the required settings (detailed in operating parameters at the back of
instruction manual), it is impossible to simulate the actual on-site conditions, especially if they are unusual. Also, the
settings may have been disturbed since leaving the factory.
Therefore we strongly recommend
the set is commissioned by our authorised agent
who will prepare the set, make
any necessary adjustments and leave the set in operational order.
Commissioning is a requirement to validate the Warranty (see Customer Assurance)
Prior to requesting an engineer to attend the site for commissioning, the client must ensure that;
the equipment has been correctly installed;
a written scheme of examination has been obtained where required under the Pressure Systems Safety
Regulations;
an adequate water supply and permanent electricity supply are available;
the equipment and pipework in the building being served by the pressurisation unit is capable of accepting
the generated pressures.
2.3
OPERATING INSTRUCTIONS
This unit is used for maintaining the pressure in pressurised heating or chilled systems with a volume up to 10,000
litres at 82ºC or boiler power up to 1000kW.
READ GENERAL SAFETY INFORMATION 0.0, WARNINGS 0.1 and CAUTIONS 0.2, 0.3 & 0.4
2.3.1 ADDITIONAL
CAUTIONS
2.3.1.1
Isolate the pressurisation unit from the system before draining or modifying the system.
If the unit is
drained it must be recommissioned.
2.3.2 NORMAL
OPERATION
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 or sealed vessel 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.
2.3.3 STANDARD/BASIC “-B” CONTROLLER OPERATION
The control is by AquaTech-Pressmain “MPC-Pu” Microprocessor, with a 2 character display on the control panel,
showing the current system pressure in Bar.
To spread the wear evenly between the pumps the Duty Pump alternates each time both pumps stop (where two
pumps are fitted).
If there is an interruption in the electrical supply the unit will restart on restoration of the supply.
The unit must be left switched ON with the system connection valve OPEN.
When switched on the display shows the controller type
Then self checks stating the firmware ref. eg.
Followed by the system pressure in bar
(Screens shown are examples only)
1 2
2.3
P u
