Mira Enhance, Инструкция по установке и эксплуатации

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1.3.2. Fit check valve onto pump outlet after flow switch to prevent water
surging in the pipe work. This may increase the pressure required to
start the pump (Refer to Figure 3).
1.4. Flow starts adequately and drops after a short time
Check:
1.4.1. Sufficient stored cold water.
1.4.2. Pipe work that is prone to air-locking should be rerouted to be self
venting when not in use. Float type Automatic Air Vents are, in
general, NOT advisable for pump
inlet pipe work, as a negative pump
pressure will allow air to be sucked in through Automatic Air Vents.
The pressure at the desired vent position can approximately be
determined using the Mira green book ‘A Guide to Domestic Pumped
Shower Systems’, to check whether it remains positive under
dynamic conditions.
1.3.1. There are no air-locks in the pump outlet pipe work. These will cause
water movement through the pump by compression of the air. Reroute
the pipe work or fit float type automatic air vents at air collection points.
(Refer to Figure 3).