Installation; Selecting The Pump Location; Rotating The Pump Head (Optional) - Dometic P030 Installation And Operation Manual

Installation

5 Installation
NOTICE: Failure to obey the following instructions
could result in damage to the pump or components, and
cause property damage.
• The motor is splash-resistant, not submersible. It
should be located in a dry environment.
• The pump outlet must be above the inlet.
• Never install the pump vertically or with the motor
below the pump.
• If the pump was packaged with plastic shipping
shims, these shims must be used as additional
support under the motor feet.
• The Net Positive Suction Head available (NPSHa)
to the pump must be greater than the Net Positive
Suction Head required (NPSHr). NPSHa is the
pressure measured to the inlet of the pump. NPSHr
is a value that can be found on the pump spec sheet
curves. Filters, strainers and any other fittings in the
suction line will lower the NPSHa and should be
calculated into the application.
This section describes how to select the pump
location, how to rotate the pump head (if needed to
accommodate the discharge piping), mounting the
pump, connecting the piping, connecting a drain plug
or valve, and making the electrical connections.

5 .1 Selecting the Pump Location

When selecting the pump location, consider the
following items.
e
w
q
u
i
1 Pump Placement - Sea or Nonpotable Water Application
6
r
t
y
Water Line
q
Seawater Outlet
w
Outlet Flow
e
A/C Condenser Coil
r
Pump
t
• For optimum performance and to minimize suction
lift, place the pump as far below the water line as
possible.
• Place the pump in a location that will allow mounting
in a level, horizontal position, on a secure foundation.
• Ensure adequate ventilation around the pump for
proper operation and cooling of the motor.
5 .2 Rotating the Pump Head
(Optional)
The pump is preconfigured with a vertical discharge
orientation, which is applicable to most installations.
When preparing the pump installation, it may be
necessary to rotate the pump head to improve the ease
of installing the pump and associated piping. Rotating
the pump head is optional, and should be done before
mounting the pump.
Make sure the o-ring is properly seated in the
I
groove after rotating. The o-ring is lubricated, and
should not need additional lubrication.
I When the pump discharge is in a horizontal
configuration, the motor must be shimmed to raise
the front of the pump to avoid interference.
Magnetic-Drive Centrifugal Pump
Strainer
y
Inlet Flow
u
Seacock (ball valve)
i
and Scoop-type,
Through-hull Inlet
EN