Service Water Pump - IDEC FL1E-H12RCA User Manual

8.7 Service water pump

The use of rainwater as an addition to the drinking water
supply is gaining importance. This saves cost and helps to
protect the environment. For example, rainwater can be
used for:
• Washing clothes
• Irrigation system for gardens
• Watering indoor plants
• Car wash
• Toilet flushing installations
The sketch below illustrates how such a rainwater utilization
system is operated:
Rainwater 
supply line
Rainwater reservoir
The rainwater is collected in a reservoir. From the reservoir,
a pumping station supplies a respective line system. From
there it can be tapped in the same way as normal drinking
water. If the reservoir should run dry it can be topped up with
drinking water.
IDEC SmartRelay Manual
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Drinking water supply line
K4
S2
S3
S4
Pressure switch
S1
Pump
M1
Drinking water supply Off
Drinking water supply On
Dry-run protection Off
Dry-run protection On
Applications
Control in the
distribution box
Pressure tank
Service water 
connection
293