amiad 4" Sigma Pro, Руководство по установке и эксплуатации

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11 Installation & Operation Manual | Sigma Pro
Caution
Caution
Initial Operation
At the beginning/end of the growing season, or, in case of malfunction:
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Carefully read this Installation & Operation manual prior to any attempt to operate the filter.
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In order to achieve maximum performance and smooth operation of the filter, it is crucial to
perform the start-up and first operation procedures exactly as described in this manual.
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An authorized technician should commission the filter. Do not attempt to commission the filter
unaccompanied as it will affect your warranty coverage.
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Open the inlet valve while the outlet valve remains closed.
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If flow increases and pressure drops dramatically for a long period of time during network filling-
up, it is recommended that a pressure sustaining valve be installed downstream of the filter. The
pressure sustaining valve ensures a controlled filling-up of the line.
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If continual water flow is essential even during maintenance period, it is recommended that a
manual or automatic bypass valve be installed together with the isolating valves that can be used
to isolate each filter unit.
Before any maintenance operation, please read the following:
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Installation, operation and maintenance should be done by technicians acting strictly in accordance
with Amiad's instructions and in accordance with this manual. Other service should only be done
by technicians authorized by Amiad.
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Disconnect the filter from the water system by closing and securing the manual inlet valve. In cases
where the downstream piping network is pressurized, close and secure the manual outlet valve.
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Release the residual water pressure by opening the pressure release / drainage valve.
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Empty the filter by opening the drainage valve.
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Place warning signs around the work area as required by the local standards and procedures.
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Please note the requirements on filter’s safety stickers, if any.
Before disconnecting the filter from the water supply and before releasing the filter’s residual
pressure,
DO NOT:
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Loosen or unscrew bolts
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Remove any protection cover
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Open any service port flange