Alarko ALD 400 Series, Руководство по эксплуатации

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WATERLESS RUNNING PROTECTION
There are different applications on "waterless running protection" for Alarko
water boosters.
ALD Water Boosters:
Protection is included in the standard delivery. Water float switch is used.
ALDF Water Boosters:
Minimum pressure and water float switch protection is available.
Figure 2: Placing the Water Float Switch in the Tank
The tank is empty.
The water booster
does not work.
The tank is full. The water
booster works.
DISASSEMBLY OF ONE OF THE PUMPS
If one of the pumps of the water boosters with twin or triple pumps is removed for
repair or maintenance, the remaining pump(s) may continue to run without having to
change the electrical connections. To run the system, the following procedure must be
followed.
• Switch off the main switch at the power input of the water booster.
• Close the fuse for the pump to be removed from the control panel.
• Disconnect the pump motor cable connections. Isolate exposed ends.
CAUTION: If the switch is opened accidentally, the terminals are energized.
Therefore, the cable terminals must be insulated in a way that they cannot be opened
to prevent possible hazards.
• Close the water inlet valve of the pump and disconnect the pump from the
flanges (The check valve on this line will prevent water from returning.) This
end does not need to be neutralized).
• Energize the system by opening the main switch.