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IMPORTANT FACTS: READ BEFORE COMMENCING PUMP INSTALLATION
A Water storage capacity.
•
The cold water storage capacity (must be a minimum of 230 litres) and sufficient to
meet the flow rates required by the pumped equipment and any other water using
fittings and appliances, which may be operated simultaneously.
•
Ensure the pump is primed as described in the priming section before starting,
damage to the shaft seal will result otherwise. See Section 5 - Commissioning.
B Water temperature
•
The water entering the pump must be controlled as follows:
•
The minimum allowable water temperature is 4°C.
•
The maximum allowable water temperature is 60°C.
C Pipework - General
•
Secure pipework: Ensure pipework to and from pump is independently supported &
clipped to prevent forces being transferred to inlet and outlet branches of pump.
•
Flux: Solder joints must be completed, and flux residues removed prior to pump
installation (flux damage will void any warranty).
•
Pipework design: Care should be taken in the design of pipework runs to minimize
the risk of air locks e.g. use drawn bends rather than 90° bends.
•
DO NOT introduce solder flux to flexible hoses, pumps or pump parts manufactured
from plastic.
•
DO NOT allow contact with oil or cellulose based paints, paint thinners or strippers,
acid based descalents or aggressive cleaning agents.
•
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.
•
DO NOT bend the flexible hoses beyond 30°. They must be installed as straight as
possible.
•
DO NOT connect this pump to the mains water supply.
D Plumbing Installation Regulations
•
The plumbing installation must comply with the current water and building
regulations.
•
The plumbing installation must be installed by a qualified person.
- 6 -
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Do you have a question about the MAINSBOOST VariQ and is the answer not in the manual?
Questions and answers
The pump is making a loud humming noise probably best described as vibration noise. The water pressure in the house is still normal. I tried resetting the pump but the noise came straight back instantly.
A loud humming or vibration noise in a Stuart Turner MAINSBOOST VariQ pump could be caused by the pump being mounted in a way that amplifies noise through loose panels or pipework. Care must be taken during installation to ensure secure mounting to avoid such noise issues.
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is it normal that variq pump in my home goes off frequently if no taps are on please
No, it is not normal. If the Stuart Turner MAINSBOOST VariQ pump turns off frequently when no taps are on, it may indicate a leak in the system, debris under the non-return valve sealing face, or improper pipework installation. Running the pump at full flow to flush debris or checking and replacing the non-return valve may help resolve the issue.
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Pump keeps making knocking noise approx every 30 sec when not in use.