Norton BBL547 Owner's Manual page 23

The electrical water pumps for all BBL Electric powered masonry saws are 115v.
The motors have an autotransformer to provide the required 115v with out any
changes to the electrical motor. The electrical powered water pumps must be
submerged in water when connected to an electrical supply to reduce over heating
of the pump. When cutting dry disconnect the electrical water pump from the
power source.
The mechanical driven pump of the gasoline powered masonry saw is designed to
run wet or dry, but for continued dry cutting, disconnect the pump.
For all water pumps:
1. Be sure to keep the pump clean - do not allow sediment to cake in the pump
and clog it.
2. Keep all lines clean and running free.
3. At the end of each work day it is recommended that the water pump be
cleaned by placing the pump in clear, clean water and running the pump for 2
to 5 minutes to remove any sediment from the pump and water hoses.
4. Do not allow the water pump to sit in any slurry or sediment as when the slurry
or sediment dries out it can damage the water pump impeller.
5. Do not allow the Flex-cable for the Mechanically Driven water pumps to be
pinched by the blade guard or anything else. Damage to the Flex cable by
pinching is not covered under any warranty. Do not pinch or cut the power
supply cable for the electrical water pumps as this can cause a dangerous
electrical short. Damage to the power supply cable is not covered under any
warranty.
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