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Installation; Pool Pump Suction Requirements - STA-RITE MPE Owner's Manual

Mpra, mpea, and mpe series centrifugal pumps with integral trap
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Allow pump suction inlet height to be as close to water
level as possible. Pump will not lift water more than
10' (3m).
Allow use of short, direct suction pipe (To reduce friction
losses).
Allow for gate valves in suction and discharge piping.
Have adequate floor drainage to prevent flooding.
Be protected from excess moisture.
Allow adequate access for servicing pump and piping.
Fire and burn hazard. Modern motors run at
high temperatures. To reduce the risk of fire, do not allow
leaves, debris, or foreign matter to collect around the
pump motor. To avoid burns when handling the motor, let
it cool for 20 minutes before trying to work on it.
NOTICE: When connecting threaded pipe directly to pump,
use Teflon® tape or Plasto-Joint Stik® to seal connections. Do
not use pipe dope; pipe dope causes cracking in some plas-
tics and may damage components in piping system.
When connecting pipe to pump with union half, use
Teflon® tape or Plasto-Joint Stik® between pipe and union
adapter. Union collar to pump should be assembled dry
and hand-tight.
NOTICE: Pump suction and discharge connections have
molded in thread stops. DO NOT try to screw pipe in be-
yond these stops.
Teflon® Taping Instructions:
Use only new or clean PVC pipe fittings.
Wrap male pipe threads with one to two layers of Teflon®
tape. Cover entire threaded portion of pipe.
Do not overtighten or tighten past thread stop in pump port!
If leaks occur, remove pipe, clean off old tape, rewrap
with one to two additional layers of tape and remake the
connection.
NOTICE: Support all piping connected with pump!
Piping:
Use at least 2" (51mm) pipe. Increase size if a long run is
needed.
To avoid strains on the pump, support both suction and
discharge pipes independently. Place these supports near
the pump.
To avoid a strain left by a gap at the last connection, start
all piping at the pump and run pipe away from the pump.
To avoid airlocking, slope suction pipe slightly upward
toward the pump.
NOTICE: To prevent flooding when removing pump for
service, all flooded suction systems must have gate valves
in suction and discharge pipes.
POOL PUMP SUCTION
REQUIREMENTS
Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.
Do not block
suction.
suction entrapment or hair entrapment/entanglement.
Suction Outlet Covers
All suction outlet covers must be maintained. They must
be replaced if cracked, broken, or missing.
See Page 6 for outlet cover certification requirements.
All suction outlets must have correctly installed, screw-fas-
tened covers in place.
Suction Outlets Per Pump (Figure 3, Page 6)
Provide at least two hydraulically balanced main drains,
with covers, as suction outlets for each circulating pump
suction line. The centers of the main drains (suction outlets)
on any one suction line must be at least three feet apart.
The system must be built so that it cannot operate with
the pump drawing water from only one main drain (that
is, there must be at least two main drains connected to
the pump whenever it is running – see Figure 3, Page 6).
However, if two main drains run into a single suction
line, the single suction line may be equipped with a valve
which will shut off both main drains from the pump (see
Figure 3).
More than one pump can be connected to a single suc-
tion line as long as the requirements above are met.
5
Pump suction is haz-
ardous and can trap and
drown or disembowel
bathers. Do not use or oper-
ate swimming pools, spas, or
hot tubs if a suction outlet
cover is missing, broken, or
loose. Follow the guidelines
below for a pump installation
which minimizes risk to users
of pools, spas, and hot tubs.
Entrapment Protection
The pump suction system
must provide protection
against the hazard of

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