Stuart Turner 3.2 bar PS - Manual (Page 4)

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STEP 3 SEQUENCE OF OPERATION
The pressure vessel is able to provide for small demands of water, limiting pump starts
to the larger demand requirements. The sequence of operation for the pump set is as
follows:-
1. A terminal fitting in down-stream boosted system is opened, causing water to flow
from fitting.
2. Pressure vessel satisfies initial demand by exhausting it’s pre-charged stored water
capacity.
3. As vessel is exhausted, system pressure falls to pressure switch cut in level.
4. Pump starts and takes over water flow requirements from pressure vessel.
5. Terminal fitting in down-stream boosted system is closed causing flow to stop.
6. Flow switch sensor detects loss of flow activity as flow falls to 1 l/min or less.
7. Pump will stop after the pressure vessel stored water charge is replenished.
8. Pump set is now ready for next demand requirement.
STEP 4 PIPEWORK CONNECTIONS (General)
WARNINGS:
 Ensure pipework to and from pump is independently supported to
prevent forces being transferred to inlet and outlet branches of pump.
 Do not introduce solder flux to pumps or pump parts manufactured
from plastic. All solder joints should be completed and flux residues
removed prior to pump connection.

Do not allow contact with oil or cellulose based paints, paint thinners
or strippers, acid based descalents or aggressive cleaning agents.

Always install isolating valves to both suction and delivery pipework.

Do not install a non-return valve, or devices
which contain non-return valves, in the
suction (inlet) pipework to the pump. The
pump must be free to vent to the supply
tank at all times.
It must be ensured that the water storage capacity is sufficient to meet the flow rates
required by the pump and any other water using fittings and appliances, which may be
operated simultaneously.
The pipework feeds to the storage tank should be of adequate size to ensure
replenishment rate of tank is sufficient to meet needs of pump.
The pump must be supplied with a dedicated feed direct from the water storage
tank.
To prevent loss of water pressure through pipework use 28 mm suction pipework to the
pump minimising 90° bends.
Isolating valves (not supplied) should be fitted on the suction and delivery pipework to
enable easy isolation and access to the pump.
The 1” inline strainer as supplied should be fitted in the suction line to the pump between
the isolating valve and the pump. This will eliminate the risk of debris or scale entering the
pump.