Pentair MYERS Quick Prime Series, MYERS QP50B, MYERS QP50B3 Installation And Service Manual

QUICK PRIME

INSTALLATION AND SERVICE MANUAL

NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible
party who maintains the system.

Part # 23833A400 | © 2014 Pentair Ltd. | 03/17/14

WARNING! IMPORTANT SAFETY INSTRUCTIONS!
READ CAREFULLY BEFORE INSTALLATION

6) The voltage and phase of the power supply must

match the voltage and phase of the pump.

CALIFORNIA PROPOSITION 65 WARNING:

This product and related
accessories contain chemicals known to the
State of California to cause cancer, birth defects
or other reproductive harm.

SAFE DRINKING WATER ACT:

EXCLUSIVELY for non-potable water services.
This product is not anticipated to be used for
human consumption so is not designed for the low
lead levels stated in the Safe Drinking Water Act.
It is illegal to use this product for potable water
applications for human consumption, such as
drinking water, oral hygiene, hand washing, food
preparation and dishwashing.

FAILURE TO FOLLOW THESE INSTRUCTIONS AND
COMPLY WITH ALL CODES MAY CAUSE SERIOUS
BODILY INJURY AND/OR PROPERTY DAMAGE.

1) Before installing or servicing your pump, BE
CERTAIN THE PUMP POWER SOURCE IS TURNED
OFF AND DISCONNECTED.

2) All installation and electrical wiring must adhere
to state and local codes. Check with appropriate
community agencies or contact your local electrical
and pump professionals for help.

3) CALL AN ELECTRICIAN WHEN IN DOUBT.
Pump must be connected to a separate electrical
circuit directly from the entrance box. There must
be an appropriately sized fuse or circuit breaker in
this line. Tying into existing circuits may cause circuit
overloading, blown fuses, tripped circuit breakers or a
burned-up motor.

4) Do not connect pump to a power supply until
the pump is grounded. For maximum safety, a ground
fault interrupter should be used. CAUTION: FAILURE

TO GROUND THIS UNIT PROPERLY MAY RESULT
IN SEVERE ELECTRICAL SHOCK.

5) WARNING: Reduced risk of electric shock
during operation of this pump requires the provision
of acceptable grounding. If the means of connection
to the supply-connection box is other than grounded
metal conduit, ground the pump back to the service
by connecting a copper conductor, at least the
size of the circuit conductors supplying the pump,
to the grounding screw provided within the wiring
compartment.

This pump is provided with a means for grounding.
To reduce the risk of electric shock from contact
with adjacent metal parts, bond supply box to the
pump-motor-grounding means and to all metal parts
accessible including metal discharge pipes and the
like, by means of a clamp, a weld or both if necessary,
secured to the equipment-grounding terminal.

This product is to be used

7) Do not use an extension cord. Above ground

joints must be made in an approved junction box.

8) Do not work on this pump or switch while the

power is on.

9) Never operate a pump with a frayed or brittle
power cord, and always protect it from sharp objects,
hot surfaces, oil and chemicals. Avoid kinking
the cord.

10) Never service a motor or power cord with wet
hands or while standing in or near water or damp
ground.

11) The three phase units must be wired by a
qualified electrician, using an approved starter box
and switching device.

12)

Do not use this pump in or near a swimming pool.

13) Single phase motors are equipped with
automatic resetting thermal protectors. The motor
may restart unexpectedly, causing the leads to
energize or pump to turn on. Three phase motors
should be protected by proper thermal and amperage
protection. (Check local codes.)

14) Check for nicks in the wire and pump insulation
by using an ohmmeter and checking resistance to
ground before installing the pump and after installing
the pump. If in doubt on the proper procedure, check
with a qualified electrician.

15) Do not pump gasoline, chemicals, corrosives
or flammable liquids; they could ignite, explode
or damage the pump, causing injury and voiding
the warranty.

16) Do not run this pump with discharge completely
closed. This will create superheated water, which
could damage the seal and shorten the life of the
motor. This superheated water could also cause
severe burns. Always use a pressure relief valve, set
below the rating of the tank system.

17) Do not run the pump dry, fail to protect the
pump from below freezing temperatures, run the
pump with the discharge completely closed or pump
chemicals or corrosive liquids.

18) Never work on the pump or system without
relieving the internal pressure.

19) Do not pump water above 120° Fahrenheit.

20) Never exceed the pressure rating of any
system component.

GENERAL INSTALLATION

The pump should be installed in a clean, dry and well
ventilated place allowing room to inspect and service
the unit. If located in a pit, the pit should be protected
against flooding.

The pump must be securely fastened to a solid
foundation. The pump should always be mounted in
a horizontal position on a level foundation. Failure to
properly secure the pump may result in failure of the
pump or piping and damage to the surrounding area.

SUCTION PIPING

Do not exceed 25' total suction lift. If on an installation,
excessive total suction lifts are encountered, do one or
more of the following to correct this condition:

1. Locate pump nearer to liquid source.

2. Increase pump suction pipe size.

3. Simplify suction piping by elimination of valves and
fittings where possible.

4. Decrease pump capacity.

DISCHARGE PIPING

The pump case is tapped for 1-1/2" pipe for 3hp and
under units. For 5hp units it is tapped for 2" pipe.
Larger or smaller pipe may be used depending upon
the installation. The discharge pressure is not to
exceed 100 psi for 3hp and under units. For 5hp units
the discharge pressure is not to exceed 150psi.

VOLTAGE DATA

Single phase motors as received will be wired for
230V operation. Note: The 2 and 3 hp single phase
motors are 230V only.

All three phase motors are 230/460V units. Ensure
that the motor connections are correct for the
voltage available.

The voltage available at the motor must be within
10% of the rated voltage. For offset installations
be sure that adequate wire size is used for the
motor involved.

MOTOR PROTECTION

Single phase 3/4 to 3 hp motors have built-in thermal
protection for all voltages.

Three phase and 5 hp single phase motors do
not have built-in thermal protection. It is highly
recommended that a properly sized magnetic starter
be used with all three phase motors.

All motors should be equipped with a correctly fused
disconnect switch to provide protection. Consult local
or national codes for proper fuse protection.

ROTATION DATA

The pump must run in the direction of the arrow
on the pump bracket. At the time of installation,
momentarily close the entrance switch to determine
rotation; if rotation is not correct, interchange any two
of the three motor leads, which will reverse
the rotation.

INITIAL PRIMING

Do Not Run Pump Dry

The pump must be filled with water for the initial
start. Failure to do so will result in damage to the
mechanical shaft seal.

Three horsepower and under units are designed to
automatically re-prime with or without a check or foot
valve in the suction line. Five horsepower units require
a check or foot valve for this operation.

For initial start-up, fill the pump with liquid through the
discharge opening in the top of the case. This can be
done before the discharge piping is installed. As an
alternative it is recommended to install a tee above
the pump and use the top of the tee for priming.
Pour in approximately one gallon of water for all units
except 5 hp which will need two gallons. Install the
discharge piping or pipe plug, if a tee is used.
The unit can now be started.

CHECK OR FOOT VALVE

It is recommended that either a check or foot valve
be used in the suction line on permanent installations.
This will result in quicker water delivery upon starting,
thereby eliminating the priming issues.

If the pump is to be used in conjunction with a
pressure tank, a check or foot valve must
be used.

FLUSHING

The unit can be back flushed periodically to remove
any sand or debris that may have been pulled into
the pump from the liquid source. It is not necessary
to remove any piping if a tee is installed above
the pump.

To back flush the unit, remove the plug in the tee and
the pipe plug from the lower front face of the case.
Pour water into the top opening until the liquid coming
from the lower front opening is clean. Reinstall all pipe
plugs or piping and reprime the pump.

DRAINING THE PUMP

To drain the pump, remove the plug from the
discharge tee and the pipe plug from the lower front
face of the case. If the unit is to be inoperative for an
extended period of time, it is suggested that the unit
be drained. Suction line should also be drained to
prevent freezing.

Remove the fuses from the entrance switch to ensure
that the unit is not inadvertently started while drained,
as damage to the shaft seal would occur.

SUCTION SCREEN

The liquid being pumped should be screened properly
to prevent debris from being taken into the system.

PUMP DISASSEMBLY INSTRUCTIONS

It is not necessary to remove the suction and
discharge piping as the pump case is designed so
that no wear would occur which would necessitate
replacing this part.

1. Drain the pump of its liquid charge and open the
power supply switch contacts and remove fuses.

2. Disconnect the electrical wiring from the motor
and remove the cap screws that secure the pump
bracket to the pump case.

32