Monarch Industries NSPHE User manual

231253eR11 0503
OWNER'S
MANUAL
NSPHE
Lawn and Turf Pumps
Electric Motor Driven
PumpBiz.com
WARNING - RISK OF ELECTRICAL SHOCK
• Have an electrician provide electrical power to the motor.
• Motor must be grounded and terminal cover in place to reduce
electrical shock hazard.
• Keep motor operating area as dry as possible.
• A ground fault interrupter (GFI) protected circuit is recom-
mended for use with any electrical device operating near water.
• Always disconnect power before servicing.
• Not investigated for use in swimming pool areas.
SAFETY WARNINGS
BEFORE OPERATING OR
INSTALLING THIS PUMP, READ
THIS MANUAL AND FOLLOW
ALL SAFETY RULES AND
OPERATING INSTRUCTIONS.
WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must
comply with the National Electrical Code (NEC) and with any local
codes and ordinances. Employ a licensed electrician. For non-
thermally protected motors use with approved motor control that
matches motor input in full load amperes with overload element(s)
selected or adjusted in accordance with control instructions.
SAFETY
CAUTION
•DO NOT OPERATE THIS PUMP DRY!
• Review instructions before operating.
CAREFULLY READ THESE SAFETY
MESSAGES IN THIS MANUAL AND ON PUMP.
APPLICATION
This pump is suitable for installations where the vertical distance
from the pump to the water level does not exceed 25 ft. In all
installations, friction losses in the suction pipe must be taken into
consideration.
Flow in GPM Flow in L/min.
at total head (ft.) at total head (Meters)
HP 25 50 75 100 125 150 10 20 30 40 50
3/4 46 36 20 163 102
1 53 44 32 10 189 136 45
1-1/2 59 50 37 20 212 159 87
2 90 79 62 38 329 261 155
3 110 92 71 40 371 276 110
5 141 121 98 66 560 466 348 148
PERFORMANCE
INSTALLATION
PUMP LOCATION: The pump should be installed in a clean, dry
and ventilated location which provides adequate drainage and
room for servicing and protection from freezing temperatures. It
should be bolted down evenly on a good foundation, preferably
concrete, to prevent the development of unnecessary stress.
Locating the pump as close as possible to the source of water
supply reduces the friction losses in the suction pipe and provides
for maximum capacities.
SUCTION PIPE: It is recommended that only new clean pipe or
hose be used and the size be the same as that of the pump
suction tapping. If the pump is installed any appreciable distance
away from the source of water supply, the suction pipe should be
increased by one size. The suction pipe must always slope
upwards from the water source to the pump to avoid air pockets
in the line. In cases where the pump has to be reprimed often and
it is not necessary that a lot of water be delivered, it is advisable
to use a 90° or 45° elbow on the suction line. This enables the
pump to prime sooner and also prevents kinking of the hose. In
cases where a maximum volume of water is required over a pro-
FOR DUAL VOLTAGE MOTORS:
Voltage change instructions are located on motor label or on
wiring access cover.

2
To Check for Proper Rotation: Remove the motor end cover.
This exposes the motor shaft. If hookup is correct, the shaft will
rotate clockwise. If rotation is not clockwise, reverse any two leads
to the starter. The rotation will now be correct.
WARNING - RISK OF ELECTRICAL SHOCK
GROUNDING THE MOTOR: WIRING TO THIS PUMP MUST
BE INSTALLED AND MAINTAINED IN ACCORDANCE WITH
THE NATIONAL ELECTRICAL CODE OR YOUR LOCAL
ELECTRIC CODE. IF MORE INFORMATION IS NEEDED,
CALL YOUR LOCAL LICENSED ELECTRICIAN OR YOUR
POWER COMPANY.
It is recommended that a permanent ground connection be made to
the unit using a conductor of appropriate size from a metal under-
ground water pipe or a grounded lead in the service panel. Do not
ground to a gas supply line. Do not connect to electric power supply
until unit is permanently grounded. Connect the ground wire to the
approved ground and then connect to the terminal provided.
longed period of time, the suction line should be led almost horizon-
tally to the pump. Non-toxic thread compound should be used on all
pipe joints and connections should be thoroughly tightened. A
strainer should be connected to the bottom end of the suction pipe
and it should be well submerged at all times.
WARNING - RISK OF ELECTRICAL SHOCK
•WIRING: Make sure the voltage and frequency of the power
supply agrees with that stamped on the motor nameplate. If
in doubt, check with the power company.
WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must
comply with the National Electrical Code (NEC) and with any local
codes and ordinances. Employ a licensed electrician.
SINGLE PHASE: Determine incoming voltage to motor. Where
possible, use 230V. Connect wiring to terminal board located inside
motor end cover. Be sure voltage connections agree with wiring
diagram on motor nameplate.
THREE PHASE: Three Phase motors require magnetic starters,
and can run in either direction, depending on how they are con-
nected to the power supply.
WARNING: DO NOT RUN THE PUMP BEFORE PRIMING IT, SINCE THE SEAL AND IMPELLER COULD BE PERMANENTLY
DAMAGED.
OPERATION - PRIMING THE PUMP
PRIMING THE PUMP: A priming plug is provided in the top of the
casing to fill the pump with water. Once filled and the priming plug
replaced, the pump will prime. The priming time depends upon the
vertical and horizontal distance between the pump and the water
level. The pump should prime itself time after time as long as the
built-in check valve functions.
CAUTION: DO NOT run the pump before filling the pump
case with liquid, as it may damage the seal.
PRIMING UNDER PRESSURE: (Refer to Figure 1) Should it be
necessary to prime under pressure, place a check valve on the
discharge line of the pump and a pet cock or a ball type air bleeder
in place of the priming plug, or an air bleed line with a gate valve
connected to the discharge line. It will then be possible for the liquid
to remain in the discharge pipe and allow the pump to bleed off the
remaining air, thereby facilitating priming.
IMPELLER ROTATION: The impeller must rotate in a counter-
clockwise direction as seen facing the pump from the front of the
casing. In the event of wrong rotation for electric motor models,
refer to the instructions furnished with the motor. The rotation of
three phase motors can be changed by interchanging any two lead
wires.
STARTING THE PUMP: Never operate the pump dry as this may
damage the seal. If an exceptionally long suction line is used, the
water in the pump casing may become overheated or vapour
locked. Should this occur, replace the water in the casing with cold
water and continue priming.
DRAINING: Should the pump be subject to freezing temperatures,
it will be necessary to drain the pump completely. To drain, remove
the drain plug located at the bottom of the front face of the pump
casing and the priming plug and make sure that the drain
hole is not restricted. After all the water has been drained,
operating the pump for a few seconds will ensure that the impeller
is devoid of water (make sure that the suction line is also devoid
of water).
STORAGE OF PUMP: Drain liquid from pump to prevent freez-
ing. It is recommended that a good rust inhibitor be put in the
liquid end to prevent excessive corrosion. Be sure motor is kept
dry and covered. When restoring the use of the pump, replace all
plugs and make sure all connections are tightly sealed. After a
complete check is made, make the initial prime according to
directions under the section, Priming the Pump.
Figure 1
Gate Valve
(Min. 3/4")
Gate Valve
Pump
Air Bleed Line
Check Valve
Discharge
Strainer
Suction Line

3
MAINTENANCE
WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must
comply with the National Electrical Code (NEC) and with any local
codes and ordinances. Employ a licensed electrician.
WARNING - RISK OF ELECTRICAL SHOCK
• Have an electrician provide electrical power to the motor.
• Motor must be grounded and terminal cover in place to reduce
electrical shock hazard.
• Keep motor operating area as dry as possible.
• A ground fault interrupter (GFI) protected circuit is recom-
mended for use with any electrical device operating near water.
• Always disconnect power before servicing.
• Not investigated for use in swimming pool areas.
LUBRICATION:
a) The pump requires no lubrication.
b) For electric motor models, refer to instructions provided
by the motor manufacturer.
REPLACING MECHANICAL SEAL:
(Refer to Figure 2)
TO DISASSEMBLE:
For Models up to 2-1/2 HP (Square flange motors)
a) Remove the bolts (1) and remove the seal plate and motor
assembly from the casing (1).
b) Remove suction diffuser (2) by prying it off of seal plate.
c) Unscrew the impeller (5) counter clockwise.
d) Slip the seal off the shaft.
e) For models up to 1-1/2 HP, remove the seal plate from the
motor. For models 2 and 2-1/2 HP, remove the 4 hex nuts
and remove the motor from the seal plate. Take care not
to damage the ceramic seal.
f) If the seat (9) needs to be replaced, push it out of the seal
plate from the motor side.
TO REASSEMBLE:
a) Clean all parts.
b) Wet rubber part of the seal seat with liquid soap and press
it into its housing in the seal plate or adapter (smooth
ceramic surface facing upwards).
c) Assemble the seal plate or adapter to the motor.
d) Wet the rubber ring of the seal assembly with liquid soap
and slip it onto the motor shaft. Make sure the sealing face
is towards the ceramic seat.
e) Replace the impeller.
f) Reassemble to the casing and diffuser ring. It is recom-
mended to use a new gasket (3).
g) Reconnect the suction and discharge piping and recon-
nect the electrical wiring.
PRECAUTIONS
a) Whenever pump is dismantled and then reassembled,
always check to see that the impeller rotates freely within
the casing.
b) The NSPHE models have a flinger (10) on the shaft. This
flinger must not be removed.
Figure 2
Drain Plug
Priming
Plug
Discharge

TROUBLESHOOTINGGUIDE
LIMITED MONARCH INDUSTRIES WARRANTY
For one year from date of purchase, Monarch Industries will replace or repair for the original purchaser, free of charge, any
part or parts, found upon examination by any Monarch Industries Authorized Service Depot or by the Monarch factory, to be
defective in material or workmanship or both. Equipment and accessories not manufactured by Monarch Industries are
warranted only to the extent of the original manufacturer's warranty. All transportation charges on parts submitted for
replacement or repair under this warranty must be borne by the purchaser. For warranty service see your nearest Monarch
Industries Authorized Service Depot. THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES INCLUD-
ING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO ONE YEAR
FROM PURCHASE AND TO THE EXTENT PERMITTED BY LAW. LIABILITY FOR CONSEQUENTIAL DAMAGES
UNDER ANY AND ALL WARRANTIES ARE EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW.
This warranty is an addition to any statutory warranty.
TROUBLES AND CAUSE REMEDY
Failure to Pump:
1. Pump not properly primed. 1. Make sure pump casing and suction line are full of water.
See priming instructions.
2. Speed too low. 2. WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections and system grounding
must comply with the National Electrical Code (NEC) and
with any local codes and ordinances. Employ a licensed
electrician. Check voltage at motor terminals and at meter
when pump is operating. If low, refer to wiring instructions
or check with your power company. Check loose
connections.
3. Total head more than for which pump was intended. 3. A pump designed for higher head needed.
4. Suction lift is too great. 4. Locate pump closer to source of water. Make sure suction
piping is large enough.
Reduced Capacity and/or Head:
1. Air pockets or leaks in suction line. 1. Check suction piping.
2. Clogged impeller. 2. Remove and clean.
3. Strainer too small or clogged. 3. Use larger strainer or clean.
4. Insufficient submergence of suction line. 4. Add lengths of suction pipe to keep submerged end well
below the water surface.
5. Excessive suction lift. 5. If caused by suction pipe friction, enlarge piping.
Otherwise, move pump closer to water level.
6. Total head more than that for which the pump was 6. A pump designed for higher head is needed.
intended.
7. Excessively worn impeller. 7. Order replacement parts using Repair Parts List.
Pump Loses Prime:
1. Air leaks in suction line. 1. Check suction piping.
2. Excessive lift and operating too near shut-off point. 2. Move pump nearer water level.
3. Water level drops while pumping, uncovering suction 3. Check water supply. Add length of pipe to suction to
piping. keep submerged end under water.
Mechanical Troubles and Noise:
1. Bent shaft and/or damaged bearings. 1. Take motor to authorized motor repair shop.
2. Suction and/or discharge piping not properly 2. See that all piping is supported to relieve strain on pump
supported and anchored. assembly.
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