American Stainless Pumps, Inc.
www.aspumps.com
2
Safety Instructions (continued…)
1. Always disconnect and lockout the electrical power source before attempting any connection, maintenance or repairs.
Failure to do so can cause electrical shocks, burns and death.
2. Install ground and wire motors in accordance with all local and national electrical codes.
3. Install an all leg disconnect switch near the motor for quick access.
4. The electrical supply must match the motor nameplate specifications and the motor must be wired per the wiring
diagram on the motor to match the selected voltage.
Incorrect wiring can cause fire and motor damage and will
void the warranty.
5. Most single-phase motors and some three phase motors will have automatic thermal protection switches wired in the
motor. These switches will open and stop the motor if the motor overheats. As the motor cools, these switches will
close and start the motor automatically and unexpectedly.
6. Motors which do not have thermal overloads must have a properly sized contacts or magnetic starters and overload
switches (or fuses) in the starter panel. Three phase motors require all leg protection.
7. Use only stranded copper wire to motor and ground. Wire size must limit the maximum voltage drop to 10% of the
motor nameplate voltage at the motor terminals.
8. Three phase motors (and some single phase motors) can rotate in either direction. The pump will operate properly
only in one direction (clockwise when looking from the motor end, counterclockwise when viewed from the pump end).
Operating the pump in the reverse rotation may damage or destroy the pump and motor, and voids the
warranty
. See section below titled, Rotation.
Installation
Units may be installed horizontally, at an angle or vertically with the motor on top.
Do not mount the motor below
the pump as leakage from the pump will damage the motor and can cause a shock, burns or
death.
Locate the pump as near to the liquid source as possible. The pump must be primed with little or no air in the case to
begin operation. Ideally, the pump should be located below the liquid level when starting. This pump is not self-
priming.
Protect the pump and motor from freezing. The pump will sustain significant damage if allowed to freeze.
Allow adequate space around the unit for service and ventilation.
Units mounted horizontally should be located on a flat, rigid surface.
Unit may be free standing, but some vibrations may occur. If attached to a foundation, tighten hold down bolts before
connecting the piping.
Piping
All piping must be independently supported. No piping loads may be carried by the pump.
Piping should be the same size or larger than the pump connections.
Proper Piping to the suction is critical for proper pump operation. Suction pipe should be short and direct, with a
minimum of fittings and turns.
Suction pipe must be designed to avoid potential air pockets. All pipe connections must be airtight.
If suction pipe is larger than the pump’s suction port, an eccentric reducer should be used with the straight side on top
to avoid creating an air pocket.
If suction of pump is above the liquid level source, a foot valve or other isolation valve will be needed to maintain the
prime of the pump. A continuous stream of liquid must be made available for the pump suction to hold its prime.
Be sure that the source liquid level is sufficient to prevent vortices from drawing air into the pump.
Install suction and discharge valves for isolating the pump during maintenance and inspection.
Do not use any suction valve for throttling the pump. This may cause a loss of prime, and damage to the pump that is
not covered by warranty. Flow regulating using throttling valves should only be done on the discharge side of the
pump.
