Pool Pump Suction Requirements - Pentair MYERS MSP7 Owner's Manual

IMPORTANT INSTRUCTIONS BEFORE INSTALLATION
Failure to follow these instructions may cause serious bodily injury and/or property damage.
Warranty void if product modified, drilled, painted,
or altered in any way; if used to pump hot water, or
to pump liquids other than water (such as but not
limited to chemicals, fertilizers, flammable liquids, herbicides,
mud, tar, cement, wood chips); or otherwise abused.
Rules for Safe Installation and Operation
When installing and using this electrical equipment, basic safety
precautions should always be followed, including the following:
1. READ THESE RULES AND INSTRUCTIONS CAREFULLY.
Failure to follow them could cause serious bodily injury and/or
property damage.
2. WARNING. To reduce the risk of injury, do not permit children
to use or operate this product.
3. WARNING. Risk of electric shock. Connect only to a circuit
protected by a ground fault circuit interrupter (GFCI). Contact a
qualified electrician if you cannot verify that the receptacle is
protected by a GFCI.
4. Check National Electric Code and state and local codes before
installing. You must comply with these rules.
5. Before installing pump, have the electrical circuit checked by
an electrician to make sure it is properly grounded.
6. Before installing or servicing your pump, BE CERTAIN pump
power source is disconnected.
7. Match supply voltage to nameplate voltage. Wrong voltage can
cause fire or motor damage and voids warranty. If in doubt, consult
a licensed electrician.
8. Complete pump and piping system must be protected against
below-freezing temperatures. Failure to do so could cause severe
damage and will void the warranty.
9. WARNING. Do not pump chemicals or corrosive liquids with
this pump. To do so will shorten the life of pump seals and moving
parts, voiding the warranty.
10. After carefully removing your pump from the carton, make a
visual inspection for any apparent shipping damage.
11. Do not use extension cords.
12. Do not pump gasoline or other flammable liquids.
13. If you need to close the valve on the discharge side of the
pump, shut the valve slowly. Rapid closing of the valve could cause
a water hammer effect and damage the pump.
14. SAVE THESE INSTRUCTIONS.
Pump must be primed! Make sure pump is full of water before
running! Failure to do so will cause damage to mechanical seal,
leakage and flooding.
WARNING. Explosion hazard. Never run pump against closed
discharge valve! To do so can cause high temperatures, pump
damage, personal injury and property damage.
WARNING. Hazardous voltage! Can shock, burn or cause death.
Read instructions before installing. To avoid dangerous or fatal
shock hazard, turn off power and ground motor before connecting
motor to electrical power supply. Do not ground to a gas supply
line.
Pump may be HOT to touch. Use caution.

POOL PUMP SUCTION REQUIREMENTS

Pump suction is hazardous and can trap and drown or
disembowel bathers. Do not use or operate swimming
pools, spas, or hot tubs if a suction outlet cover is
missing, broken, or loose. Follow the guidelines below
for a minimimum risk installation.
Suction Outlet Covers
All suction outlet covers must be maintained, and replaced if
cracked, broken, or missing. See "Testing/Certification", below, for
outlet cover certification requirements.
All suction outlets must have correctly installed, screw-fastened
covers in place.
Suction Outlets Per Pump
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 has at least two main drains
connected to the pump whenever it is running (see "Typical
Installation Drawing", Page 4). However, if two main drains
run into a single suction line, that line may be equipped with a
valve to shut off both main drains from the pump (see "Typical
Installation Drawing").
More than one pump can be connected to a single suction line as
long as the requirements above are met.
Testing/Certification
Suction outlet covers must have been tested by a nationally
recognized testing laboratory and found to comply with the latest
ASME/ANSI A112.19.8 Standard Specification for Suction Fittings
For Use in Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Applications.
3
Hazardous Suction.
Can trap hair or body,
causing severe injury
or death.
• Do not block suction.
• Keep small children
under close adult
supervision at all times.
4078 1001 IG