Intended Use - Dometic PS250 Manual De Instalacion Y Uso

Submersible Pump

WARNING: IMPACT HAZARD.
This pump has components that rotate while
in operation. Follow local safety standards for
locking out the motor from the power supply
during maintenance or service. Failure to obey this
warning could result in death or serious injury.

WARNING: BURN HAZARD.
Do not touch the surface of the pump during
operation or before cool down. This pump
can handle liquids up to 130
a maximum allowable surface temperature of
180 °F (82 °C). The pump may become hot and
could cause burns. Failure to obey this warning
could result in death or serious injury.

WARNING: CHEMICAL HAZARD. Failure to
obey the following warnings could result in
death or serious injury.
• Always wear protective clothing and eye protection
when handling chemicals that may be used to
operate or maintain this pump.
• Follow standard safety procedures when handling
corrosive or personally harmful materials that may be
used with this pump.
• Follow proper procedures for draining and
decontaminating the pump before performing
maintenance on it.
NOTICE: Failure to obey the following instructions
could result in damage to the pump or components, and
cause property damage.
• Keep the drive magnet and impeller assembly
away from metal chips or particles, and items with
magnetic stripes like credit cards and magnetic
computer media such as floppy discs and hard drives.
• Do not continue to operate the pump when unusual
noise or vibration occurs.
• Do not run the pump at less than the minimum flow.
This could lead to a pump failure.
• Do not continue to operate the pumping system
when a known leak exists.
• Do not operate the pump without liquid in the
casing. The exact length of time the pump can
operate dry without damage varies with operating
conditions and the environment.
EN
F (54 C) and has
º º
• Do not start or operate the pump with a closed
suction valve.
• Do not operate the pump with a closed discharge
valve. This could lead to pump failure.
• Always provide adequate NPSHa (net positive
suction head available). It is recommended to
provide at least 24 in. (61 cm) above the NPSHr (net
positive suction head required).
• Ground the pump to prevent static discharge. Before
operating the pump, ensure the electrical continuity
throughout the pumping system and earth ground is
1 Ohm or less.
• Check the pump for leaks on a regular basis. If leaks
are noticed, immediately repair or replace the pump.

2 Intended Use

The submersible pump (hereinafter referred to as pump)
is a marine-grade, magnetic-drive, centrifugal pump
designed to circulate seawater or fresh water through
your marine air conditioning system. This pump is only
suitable for the intended purpose and application in
accordance with these instructions.
Pumps are designed to encompass a wide range of
applications and configurations. The installer determines
various installation factors to fit the application, such as:
• Pump head orientation (horizontal or vertical)
• Mounting location (directly to floor plates, rails with
vibration isolators to reduce noise, platforms, etc.)
• Suitable mounting hardware for desired installation
or use
• Suitable piping for desired installation or use (for
example: Schedule 80 PVC, CPVC, flexible hose, etc.)
This manual provides information that is necessary for
the proper installation and operation of the pump. Poor
installation and/or improper operating or maintenance
will result in unsatisfactory performance and a possible
failure.
• Incorrect assembly or connection, including excess
voltage
Intended Use
7