We reserve the right to change designs and technical specifications of our products
.
Rev 2.1 Oct-15 Page
14
/
28
Commissioning
Commissioning must be carried out by a trained and competent person.
Close the system connection valve. (isolation valve)
Turn on the unit, the current pump pressure is shown on the mounted gauge.
Adjust the pressure (Cold fill pressure) using the pressure switch (black screw)
When the pressure shown on the mounted gauge is to the desired cold fill pressure open the system
connection valve.
Once open to the system minor further adjustment may be required.
If possible, bleed any residual air from the pumps. Caution do not attempt this operation unless you are
trained to do so.
Note - The cold pressure of the system should be set to at least 0.2 bar(g) above the static height of the
system, with a minimum permissible set pressure of 0.7 bar(g).
Note - The high and low pressure switches are pre-set for systems with an anticipated cold fill pressure of
1.0 bar(g), for other system pressures adjustment of the high and low switches may be required.
Pressure Switch Settings (Pressurisation control)
The Pressure switch has two settings:
Range setting
The pressure range within which the unit will give a signal
(contact changeover).
Differential
The difference between contact changeover on rising and
falling pressure.
The differential is a condition for stable automatic plant
operation.