SPX S2045, Инструкция по эксплуатации

Страница: 25 / 78

Waukesha Cherry-Burrell Installation
12/2010 95-03080 Page 25
12. This pump is not self priming. If the pump is installed above
the supply liquid level, install a foot valve or other system
check valve to keep the system flooded for priming. (Figure
18, item A).
13. A throttling valve may be required to control the pump flow
rate to prevent motor overload. Always install a throttling
valve (Figure 18, item B) in the discharge piping, at least 10
pipe diameters from the pump outlet.
CAUTION: Never install throttling valve in the supply pip-
ing. (Figure 18, item C).
Installations That May
Cause Operation Problems
1. Any system throttling valves or similar devices to control flow
rate must be installed in the discharge line.
CAUTION: Do not install any system throttling valves or
similar devices to control flow rate in the supply line.
Restriction in the supply line may cause cavitation and
pump damage.
2. "Water hammer" in the system can damage the pump and
other system components. Water hammer often occurs when
valves in the system are suddenly closed, causing lines to
move violently with a loud noise. When this condition is pres-
ent, find and eliminate the source of the water hammer. One
way to eliminate water hammer is to slow down the actuation
speed of the valve.
3. Do not expose the pump to freezing temperatures with liquid
in the casing. Frozen liquid in the casing will damage the
pump. Drain the casing before exposing the pump to freezing
temperatures.
Electrical Connections
DANGER: To avoid electrocution, ALL electrical installa-
tion should be done by a registered Electrician, following
Industry Safety Standards. All power must be OFF and
LOCKED OUT during installation.
1. Read the motor manufacturer's instructions before installing.
Follow manufacturer's lubrication schedules.
2. Check the motor nameplate to be sure that the motor is com-
patible with the electrical supply and all wiring, switches, and
starters. Make sure all overload protections are correctly
sized. See Figure 19.
3. Check the pump rotation following the electrical installation.
Correct rotation is counter-clockwise when facing the pump
inlet connection. See Figure 15 and Figure 19.
Figure 18 - Valve Piping Installation
Figure 19 - Replaceable Label Location