Connecting The Electrical; Operation; Priming The Pump; Starting The Pump - Dometic PS250 Manual De Instalacion Y Uso

Submersible Pump
I Never operate the pump unless the discharge
and suction valves are completely open, if
installed.
• If flexible hose is preferred, use a reinforced hose
rated for the proper temperature, pressure, and
chemical resistance against the fluid being pumped.
• Use an appropriate pipe sealant or tape on the
threads and other piping connections.
• Verify the suction valve is completely open to avoid
restricting the suction flow.
• A flush system can be installed in the piping to allow
the pump to be flushed before it is removed from
service or for winterization of the seawater system.

6.3 Connecting the Electrical

NOTICE: Do not use or install the pump if the voltage
on the label is different than the supply voltage.
When installing the pump, follow these important
considerations regarding the electrical connections.
• Prior to connecting to the power line, check the
nameplate voltage and rotation connection, and
ensure proper grounding.
• Protect the motor with a fuse or circuit breaker rated
for the pump model and usage.
• Use the proper minimum wire sizes.
• Match the pump voltage, frequency, and phase to
the installation power source.

7 Operation


WARNING: FLOOD AND/OR LEAK HAZARD.
Failure to obey the following warnings could
result in death or serious injury:
• Do not operate the pump beyond the pressure or
temperature limits.
• Do not allow severe temperature changes to occur in
a short time period within the pumping system.
• Do not continue to operate the pumping system
when a known leak exists.
EN
NOTICE: Do not continue to operate the pump if an
unusual noise or vibration occurs.
This section describes the steps to prime, start, and stop
the pump.

7.1 Priming the Pump

This pump is not self priming. Mounting the pump
below the water line helps prime the pump head. The
pump should be primed for optimal performance and to
lubricate the impeller and cool the motor. The pump will
not cool the air conditioner system if it is running dry. The
pump can run continuously, when needed.
1. Connect the external water source to the pump.
2. Open the inlet (suction) and discharge valves
completely.
3. Allow the pump to fill with water.

7.2 Starting the Pump

The pump requires positive suction at the pump
I
head to prevent cavitation.
1. Ensure all valves are open and the pump connections
are secure.
2. Turn the pump on.
I Do not attempt to adjust the flow with the
suction valve.
Operation
11