STA-RITE 5P6R Series User manual

50 HZ. MAX-E-PROTM CENTRIFUGAL PUMPS
WITH INTEGRAL TRAP
O W N E R’ S M A N U A L
INSTALLATION, OPERATION & PARTS
5P6R Series MODELS
HP 1 Phase 3 Phase
3/4 5P6R6D-209 5P6R6D3-209
15P6R6E-210 5P6R6E3-210
1-1/2 5P6R6F-211 5P6R6F3-211
25P6R6G-212 5P6R6G3-212
35P6R6H-213 5P6R6H3-213
This manual should be furnished to
the end user of this pump; its use will
reduce service calls and chance of
injury and will lengthen pump life.
Sta-Rite Industries, Export Sales & Marketing Group
293 Wright Street, Delavan, WI 53115 U.S.A.
TELEPHONE: [phone], TELEFAX: [phone], CABLE: STAREX TELEX: ITT 4970245
Printed in U.S.A. S764 (8/13/04)

2
‘5P6R’ SERIES II PUMP
WITH TRAP
To avoid unneeded service calls, prevent possible in-
juries, and get the most out of your pump, READ THIS
MANUAL CAREFULLY!
The Sta-Rite ‘5P6R’ Max-E-Pro Self-priming Centrifugal
pumps:
• Are designed for use with swimming pools or as
centrifugal pumps.
• Are excellent performers; durable, reliable.
Table of Contents
Safety Instructions .........................................................2
Installation..................................................................3-4
Electrical ....................................................................5-6
Operation ......................................................................7
Storage/Winterizing .......................................................8
Pump Service .............................................................8-9
Troubleshooting Guide ................................................10
Repair Parts List ......................................................11-14
READ AND FOLLOW
SAFETY INSTRUCTIONS!
This is the safety alert symbol. When you see this
symbol on your system or in this manual, look for
one of the following signal words and be alert to the po-
tential for personal injury.
warns about hazards that will cause death,
serious personal
injury, or major property damage if ignored.
warns about hazards that can cause death,
serious personal
injury, or major property damage if ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
NOTICE indicates special instructions not related to hazards.
Carefully read and follow all safety instructions in this
manual and on equipment. Keep safety labels in good
condition; replace if missing or damaged.
Incorrectly installed or tested equipment
may fail, causing
severe injury or property damage.
Read and follow instructions in owner's manual when in-
stalling and operating equipment. Have a trained pool
professional perform all pressure tests.
1. Do not connect system to a high pressure or city water
system.
2. Use equipment only in a pool or spa installation.
3. Install pump with at least 2 hydraulically balanced
main drains equipped with correctly installed, screw-
fastened, anti-entrapment certified covers. See Page 4.
4. Trapped air in system can cause explosion. BE SURE all
air is out of system before operating or testing equipment.
Before pressure testing, make the following safety checks:
•Check all clamps, bolts, lids, and system accessories
before testing.
•Release all air in system before testing.
•Water pressure for test must be less than 25 PSI
(7.5 kg/cm2).
•Water Temperature for test must be less than 100oF
(38oC).
•Limit test to 24 hours. After test, visually check system
to be sure it is ready for operation. Remove trap lid and
retighten hand tight only.
NOTICE: These parameters apply to Sta-Rite equipment
only. For non-Sta-Rite equipment, consult manufacturer.
IMPORTANT SAFETY
INSTRUCTIONS
Always follow basic safety precautions with this
equipment, including the following.
To reduce the risk of injury, do not per-
mit children to use this product unless they are closely
supervised at all times.
This pump is for use with permanently
installed pools and may also be used with hot tubs and
spas if so marked. Do not use with storable pools. A
permanently installed pool is constructed in or on the
ground or in a building such that it cannot be readily
disassembled for storage. A storable pool is con-
structed so that it may be readily disassembled for stor-
age and reassembled to its original integrity.
SAVE THESE INSTRUCTIONS

3
INSTALLATION
Only qualified, licensed personnel should install pump
and wiring.
Pump mount must:
Be located away from corrosive or flammable chemicals.
Have enough ventilation to maintain air temperature at less
than the maximum ambient temperature rating (Max. Amb.)
listed on the motor model plate. If this pump is installed in
an enclosure/pump house, the enclosure must have ade-
quate ventilation and air circulation to keep the tempera-
ture in the enclosure at or below the motor’s rated ambient
temperature whenever the pump is running.
Be solid - Level - Rigid - Vibration free. (To reduce vibra-
tion and pipe stress, bolt pump to mount.)
Allow pump suction inlet height to be as close to water
level as possible.
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.
NOTICE: Use Teflon tape or Plasto-Joint Stik1for making
all threaded connections to the pump. Do not use pipe
dope; pipe dope will cause stress cracking in the pump.
NOTICE: Pump suction and discharge connections have
molded in thread stops. DO NOT try to screw pipe in be-
yond these stops.
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.
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!
1Lake Chemical Co., Chicago, Illinois
Piping:
Use at least 2" IPS PVC (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.
Never use a suction pipe smaller than pump suction con-
nection.
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.
Fittings:
Fittings restrict flow; for best efficiency use fewest possi-
ble fittings.
Avoid fittings which could cause an air trap.
Pool fittings must conform to International Association of
Plumbing and Mechanical Officials (IAPMO) standards.
Use only non-entrapping suction fitting or double suction.
Suction
Port
from
pool or
vacuum
filters
Strainer Basket
cover
Discharge Port
to filter
or pool
Clamp
Knob
Bonding Lug
Pump may be bolted to level
foundation or mounting bracket
4284 1102
Figure 1

4
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 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
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 below for outlet cover certification requirements.
All suction outlets must have correctly installed, screw-
fastened covers in place.
Testing and Certification
Suction outlet covers must have been tested by a nation-
ally recognized testing laboratory and found to comply
with the lastest ASME/ANSI Specification for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
Outlets Per Pump
Provide at least two hydraulically balanced main drains,
with covers (see below), for each swimming pool pump
suction line. The centers of the main drains (suction fit-
tings) 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 2).
However, if two main drains run into a single suction
line, the single suction line may be equipped with a valve
which will shutoff both main drains from the pump (see
Figure 2).
More than one pump can be connected to a single suc-
tion line as long as the requirements above are met.
Water Velocity
The maximum water velocity through any suction outlet
must be 1.5 feet (46cm) per second unless the outlet
complies with the latest ASME/SNSI Specification for
Suction Fittings For Use in Swimming Pools, Spas, Hot
Tubs, and Whirlpool Bathtub Applications. In any case,
do not exceed the suction fittings maximum designed
flow rate.
If 100% of the pump’s flow comes from the main drain
system, the maximum water velocity in the pump suction
hydraulic system must be 6 feet (183cm) per second or
less even if one main drain (suction fitting) is completely
blocked. The flow through the remaining main drain(s)
must comply with the latest ASME/ANSI Specification for
Suction Fittings For Use in Swimming Pools, Spas, Hot
Tubs, and Whirlpool Bathtub Applications.
At Least
3 Feet
Suction Outlet
(Main Drain)
Suction Outlet
(Main Drain)
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Pump
Valves OK between
pump and Tee
No valves between
Tee and Main Drains
2762 0197
Figure 2 – Recommended pump suction layout.

5
ELECTRICAL
Ground motor before
connecting to electrical
power supply. Failure to
ground motor can cause se-
vere or fatal electrical shock
hazard.
Do not ground to a gas
supply line.
To avoid dangerous or
fatal electrical shock,
turn OFF power to motor be-
fore working on electrical
connections.
Ground Fault Circuit
Interrupter (GFCI) trip-
ping indicates an electrical
problem. If GFCI trips and
will not reset, have a qualified electrician inspect and
repair electrical system.
Exactly match supply voltage to nameplate voltage.
Incorrect voltage can cause fire or seriously dam-
age motor and voids warranty. If in doubt consult a li-
censed electrician.
Voltage
Voltage at motor must be not more than 10% above or
below motor nameplate rated voltage or motor may over-
heat, causing overload tripping and reduced component
life. If voltage is less than 90% or more than 110% of
rated voltage when motor is running at full load, consult
power company.
Grounding/Bonding
Install, ground, bond and wire motor according to local
or National Electrical Code requirements.
Permanently ground motor. Use green ground terminal
provided under motor canopy or access plate (See Figure
3); use size and type wire required by code. Connect
motor ground terminal to electrical service ground.
Bond motor to pool structure. Use a solid copper con-
ductor, size No. 8 AWG (8.4 sq.mm) or larger. Run wire
from external bonding lug (see Figure 3) to reinforcing
rod or mesh.
Connect a No. 8 AWG (8.4 sq.mm) solid copper bonding
wire to the pressure wire connector provided on the
motor housing and to all metal parts of the swimming
pool, spa, or hot tub and to all electrical equipment,
metal piping or conduit within 5 feet (1.5 m) of the inside
walls of swimming pool, spa, or hot tub.
Wiring
Pump must be permanently connected to circuit. Match
wire and circuit breaker sizes to Table I (Page 6). If other
lights or appliances are also on the same circuit, be sure to
add their amp loads to pump amp load. (If unsure how to
do this or if this is confusing, consult a licensed electrician.)
Use the load circuit breaker as the master on-off switch.
Install a Ground Fault Circuit Interrupter (GFCI) in circuit;
it will sense a short-circuit to ground and disconnect
power before it becomes dangerous to pool users. For
size of GFCI required and test procedures for GFCI, see
manufacturer’s instructions.
In case of power outage, check GFCI for tripping (which
will prevent normal water circulation). Reset if necessary.
NOTICE: If you do not use conduit when wiring motor,
be sure to seal wire opening on end of motor to prevent
dirt, bugs, etc., from entering motor.
Risk of dangerous or fatal electrical shock.
Be sure that power to the motor circuit is off before
working on wiring, wiring connections, or motor. Re-in-
stall the motor end cover and all other wiring covers be-
fore turning on the power.
1. Turn off power.
2. Remove the motor end cover.
Bonding
Lug
Motor Nameplate
Green
Ground
Screw
Motor
Canopy
Through
Bolts
349 0893
Figure 3: Typical ground screw and bonding lug locations.
Figure 4: Single phase, single voltage wiring connection dia-
gram. For 3-phase connections, refer to motor nameplate.
A
B
L2
L1
White
230
Volt
Lines
Blue
469 0194A
Hazardous voltage.
Can shock, burn,
or cause death.
Ground pump before
connecting to
power supply.

6
To Wire a Single Speed, Single Voltage Motor
Remove the motor end cover.
There are two terminals labeled L1 and L2. Attach the
power leads to these terminals. Either wire may attach to
either terminal.
To Wire a Dual-Voltage Motor
Dual voltage motors have a plug to change from 230 volts
(factory setting) to 115 volts.
1. If you have 230 volts motor supply voltage, confirm
that the plug is set for 230 volts. The arrow on the plug
will point to the 230 volt position. Note that plug only
connects with one prong in this position.
2. If you have 115 volt supply, pull the plug straight up
and place it on the two brass prongs as shown.
NOTE: Arrow is highlighted for clarity.
Figure 5B Voltage Change
Plug Set for 115 Volts
Figure 5A -Voltage Change
Plug Set for 230 Volts
TABLE I - RECOMMENDED FUSING AND WIRING DATA
Serv. to Motor - Dist. Meters
Motor Branch Fuse Max Load Voltage/
HP Rating Amps* Amps Hz/Phase 0-30 M 31-61 M 62-91 M
3/4 20 12.2 115/50/1 3.0 5.5 8.4
120 15.4 115/50/1 3.0 8.4 14.0
1-1/2 30 19.4 115/50/1 5.5 8.4 14.0
3/4 15 6.1 230/50/1 2.0 2.0 2.0
115 7.7 230/50/1 2.0 2.0 2.0
1-1/2 15 9.7 230/50/1 2.0 2.0 3.0
220 10.5 230/50/1 2.0 2.0 3.0
320 13.9 230/50/1 3.0 3.0 5.5
3/4 15 3.6 220/50/3 2.0 2.0 2.0
115 4.0 220/50/3 2.0 2.0 2.0
1-1/2 15 5.15 220/50/3 2.0 2.0 2.0
215 6.6 220/50/3 2.0 2.0 2.0
315 8.0 220/50/3 2.0 2.0 2.0
3/4 15 2.1 380/50/3 2.0 2.0 2.0
115 2.3 380/50/3 2.0 2.0 2.0
1-1/2 15 3.0 380/50/3 2.0 2.0 2.0
215 3.8 380/50/3 2.0 2.0 2.0
315 4.7 380/50/3 2.0 2.0 2.0
* Time delay fuses are recommended instead of standard fuses in any motor circuit.
Wire
Size
mm2
}
Wire
Size
mm2
}
Wire
Size
mm2
}
Wire
Size
mm2
}

7
OPERATION
NEVER run pump dry. Running pump dry may
damage seals, causing leakage and flooding. Fill
pump with water before starting motor.
Before removing trap cover:
1. STOP PUMP before proceeding.
2. CLOSE GATE VALVES in suction and discharge pipes.
3. RELEASE ALL PRESSURE from pump and piping
system.
4. NEVER tighten or loosen clamp while pump is
operating!
If pump is being pressure tested, be sure pressure
has been released before removing trap cover.
Do not block pump suc-
tion. To do so with
body may cause severe or
fatal injury. Small children
using pool must ALWAYS
have close adult supervision.
Fire and burn
hazard. Modern motors run at
high temperatures. To reduce
the risk of fire, do not allow
leaves, debris, or foreign mat-
ter 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. An automatic in-
ternal cutoff switch protects the motor from heat damage
during operation.
NOTICE: Maximum ambient temperature for motor oper-
ation must not exceed maximum ambient temperature
rating on motor model plate.
Priming Pump
Release all pressure from filter, pump, and piping system;
see the filter owner’s manual.
In a flooded suction system (water source higher than
pump), pump will prime itself when suction and dis-
charge valves are opened.
If pump is not in a flooded suction system, remove trap
cover handle ring and trap cover; fill trap and pump with
water.
Do not lubricate the trap cover O-Ring. The original
equipment O-Ring contains a permanent internal
lubricant.
NOTICE: If you replace the O-Ring with a non-internally
lubricated O-Ring, you may need to apply a silicone
based lubricant.
Clean and inspect O-Ring; reinstall on trap.
Replace trap cover and handle ring on trap; turn handle
ring clockwise to tighten cover.
NOTICE: Tighten trap cover handle ring by hand only
(no wrenches)!
Pump should prime now. Priming time will depend on
vertical length of suction lift and horizontal length of suc-
tion piping.
If pump does not prime, make sure that all valves are
open, suction pipe end is under water, and that there are
no leaks in suction pipe.
See Troubleshooting Guide, Page 10.
Routine Maintenance
The only routine maintenance needed is
inspection/cleaning of trap basket. Debris or trash that
collects in basket will choke off water flow through the
pump. Follow instructions below to clean trap:
1. Stop pump, close valves in suction and discharge, and
release all pressure from system before proceeding.
2. Remove trap cover handle ring (turn counterclock-
wise). If necessary, tap handles gently with a rubber
mallet.
3. Remove strainer basket and clean. Be sure all holes in
basket are clear, flush basket with water and replace in
trap with large opening at pipe connection port (be-
tween ribs provided). If basket is replaced backwards
cover will not fit on trap body.
4. Clean and inspect lid O-Ring; reinstall on trap.
5. Clean O-Ring groove on trap body and replace cover
and handle ring. To help keep cover from sticking,
tighten hand tight only.
6. Prime pump (see priming instructions).
Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.
Do not block
suction.

8
Draining Pump
1. Pump down water level below all inlets to the pool.
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before draining pump.
2. Remove trap cover and use
low pressure air to blow
accumulated water from
the piping system. Lugs
have been provided on the
trap lid to use a rubber
mallet if needed.
3. Cap inlet piping after drain-
ing to keep water out of the
pipes.
4. To prevent pump from freez-
ing, remove trap cover and
drain the tank body through
the drain plugs (Key No. 19,
Pages 11 - 13). Clean pump
and trap basket thoroughly; replace trap cover.
NOTICE: Tighten trap cover by hand only (no
wrenches)! Use a rubber mallet only if necessary to re-
move cover! If pump is not anchored, use caution not to
break attached piping!
5. Be sure motor is kept dry and covered.
Storage/Winterizing:
Explosion hazard. Purging the system with
compressed air can cause components to explode, with
risk of severe injury or death to anyone nearby. Use only a
low pressure (below 5 PSI, 35 kPa, or 0.34 Bar), high vol-
ume blower when air purging the pump, filter, or piping.
NOTICE: Allowing pump to freeze will damage pump
and void warranty!
NOTICE: Do not use anti-freeze solutions (except propy-
lene glycol) in your pool/spa system. Propylene glycol is
non-toxic and will not damage plastic system compo-
nents; other anti-freezes are highly toxic and may dam-
age plastic components in the system.
Drain all water from pump and piping when expecting
freezing temperatures or when storing pump for a long
time (see instructions below).
Keep motor dry and covered during storage.
To avoid condensation/corrosion problems, do not cover
pump with plastic.
For outdoor/unprotected installations:
1. Gravity drain system as far as possible.
2. Protect areas which retain water with non-toxic propy-
lene glycol antifreeze (“RV antifreeze”).
3. Enclose entire system in a weatherproof enclosure.
4. To avoid condensation/corrosion damage, allow venti-
lation; do not wrap system in plastic.
5. Use a 40% propylene glycol/60% water solution to
protect pump to -50°F (-46°C).
Startup For Winterized Equipment
1. Remove any temporary weather protection placed
around system.
2. Follow filter manufacturer’s instructions for reactiva-
tion of the filter.
3. Inspect all electrical wiring for damage or deterioration
over the shutdown period. Have a qualified service-
man repair wiring as needed.
4. Inspect and tighten all watertight connections.
5. Open all valves in suction and return piping.
6. Remove any winterizing plugs in piping system.
7. Drain all antifreeze from system.
8. Close all drain valves and replace all drain plugs in
piping system.
9. Prime pump according to instructions on Page 7.
PUMP SERVICE
Pump should only be serviced by qualified personnel.
Be sure to prime pump (Page 7) before starting.
Before removing clamp or trap cover:
1. STOP PUMP before proceeding.
2. CLOSE GATE VALVES in suction and discharge pipes.
3. RELEASE ALL PRESSURE from pump and piping system.
4. NEVER tighten or loosen clamp while pump is operating!
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before working on
pump or motor.
No lubrication or regular
maintenance is needed
beyond reasonable care and
periodic cleaning of strainer
basket.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.

9
If shaft seal is worn or damaged, repair as follows:
Pump Disassembly/Removing Old Seal
Disconnect power to pump motor.
Be sure gate valves on suction and return piping are
closed before starting work.
Release all pressure by opening all vents before starting work.
1. Drain pump by removing drain plugs on bottom of
pump body and trap body.
2. Be sure there is no pressure in trap body; remove
cover (unscrew by turning counterclockwise).
3. Remove clamp holding pump halves together. Motor
and seal plate assembly can now be pulled away
from pump body.
4. Remove five screws and washers holding diffuser to
seal plate. Remove diffuser.
5. Remove motor canopy. Being careful not to touch ca-
pacitor terminals, loosen capacitor clamp and move
capacitor to one side.
6. Hold shaft with 7/16" open-end wrench on motor
shaft flats.
7. Unscrew impeller from shaft (turn counterclockwise
when facing it).
NOTICE: On models with impeller screw: Remove
impeller screw (left hand thread - turn clockwise)
and gasket before removing impeller. Inspect gasket
for damage, cracks, etc. Replace if damaged.
8. Pull rotating member of seal off of impeller sleeve;
clean sleeve.
9. Remove four screws holding seal plate to motor.
10. Place seal plate face down on flat surface and tap out
ceramic seat.
11. Clean seal cavity in seal plate and clean motor shaft.
Pump Reassembly/Installing New Seal
1. Ceramic seat must be
clean and free of dirt,
grease, dust, etc. Wet
outer edge of rubber cup
on ceramic seat with
small amount of liquid
detergent; press ceramic
seat into seal plate firmly
and squarely with finger
pressure (Figure 7).
2. If ceramic seat will not lo-
cate properly, remove it,
place face up on bench
and reclean cavity.
Ceramic seat should now
locate.
3. If seat still will not locate properly, place a cardboard
washer over the polished face and use a piece of 3/4"
(19mm) standard pipe for pressing purposes.
NOTICE: Be sure not to scratch or mar polished sur-
face or seal will leak.
4. Remount seal plate on motor. Tighten bolts to 60-80
inch-lbs. (69-92 kg/cm) torque.
5. Apply a small amount of liquid detergent to inside di-
ameter of rotating half of seal.
6. Slide rotating seal member, polished face last, over
impeller sleeve until rubber drive ring hits shoulder.
NOTICE: Be sure not to nick or scratch polished seal
face; seal will leak if face is damaged.
7. Screw impeller onto shaft (clockwise); this will auto-
matically locate seal in seal plate.
NOTICE: On models with impeller screw: Install im-
peller gasket and lock screw (left-hand thread - turn
counterclockwise). Torque lock screw to 50-55 inch-
lbs. (57.6-63 kg/cm).
8. Mount diffuser on seal plate; tighten screws to 10-14
inch-lbs. (11.2-16.1 kg/cm) torque.
9. Assemble motor and seal plate to volute; be sure
clamp is properly seated.
NOTICE: Clamp knob can be located in any position
around volute; if it is moved after assembly, tighten
knob while tapping around clamp to assist sealing.
Do not move clamp while pump is full of water.
Hazardous pressure. Release all pressure
from pump and piping system before working on pump
or attempting to adjust or remove clamp. Clamp may
blow off of pump if adjusted under pressure.
10. Prime pump according to instructions on Page 7.
Figure 7: Press seal into
heat sink in seal plate

10
TROUBLESHOOTING
GUIDE
Read and understand safety and operating instruc-
tions in this manual before doing any work on
pump!
Only qualified personnel should electrically test
pump motor!
FAILURE TO PUMP; REDUCED CAPACITY
OR DISCHARGE PRESSURE
Suction leaks/lost prime:
1. Pump must be primed; make sure that pump volute
and trap are full of water. See priming instructions,
Page 7.
2. Make sure there are no leaks in suction piping.
3. Make sure suction pipe inlet is well below the water
level to prevent pump from sucking air.
4. Suction lift of 10 to 20 feet (3-6 M) will reduce per-
formance. Suction lift of more than 20 feet (6 M) will
prevent pumping and cause pump to lose prime. In
either case, move pump closer (vertically) to water
source. Make sure suction pipe is large enough.
Clogged pipe/trap/impeller, worn impeller:
5. Make sure suction trap is not clogged; if it is, clean
trap and strainer.
6. Make sure impeller is not clogged (follow steps 1
through 7 under “Removing Old Seal”, Page 9; check
impeller for clogging; follow steps 7 through 10
under “Installing New Seal”, Page 9, for reassembly).
7. Impeller and diffuser may be worn. If so, order re-
placement parts from Repair Parts List, Pages 11-14.
8. Pump may be trying to push too high a column of
water. If so, a “higher head” pump is needed.
Electrical:
9. Pump may be running too
slowly; check voltage at
motor terminals and at
meter while pump is run-
ning. If low, see wiring in-
structions or consult
power company. Check
for loose connections.
10. Pump may be too hot.
A. Check line voltage; if
less than 90% or more
than 110% of rated
voltage consult a li-
censed electrician.
B. Increase ventilation.
C. Reduce ambient
temperature.
D. Tighten any loose
connections.
MECHANICAL TROUBLES AND NOISE
1. If suction and discharge piping are not adequately
supported, pump assembly will be strained. See
“Installation”, Page 3.
2. Do not mount pump on a wooden platform! Securely
mount on concrete platform for quietest performance.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.