Sears HYDRO-GLASS 390.262452 User manual

OWNER’S
MANUAL
MODEL NO.
390.262452
390.262552
390.262652
CAUTION:
Read and Follow
All Safety Rules and
Operating Instructions
Before First Use of
This Product.
Save This Manual For
Future Reference.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
• Safety Instructions
• Installation
• Electrical
• Maintenance
• Repair Parts
PRINTED IN U.S.A.
HYDRO-GLASS®
HIGH PRESSURE
SPRINKLER PUMP
Form No. F642-9610 (10/1/96)
FOR POSITION ONLY
50%

2
CONTENTS
INTRODUCTION/WARRANTY..........................................2
SAFETY ...............................................................................2
PREPARATION....................................................................3
INSTALLATION................................................................4-5
ELECTRICAL .......................................................................6
OPERATION........................................................................7
MAINTENANCE........................................................8, 9, 12
TROUBLESHOOTING/PUMP PERFORMANCE.................10
REPAIR PARTS..................................................................11
INTRODUCTION
Pleasetakea fewminutesto readourinstructions beforeyou
install and use your pump. This will help you obtain the full
benefitsfromthis pump.Itwill alsohelpyou avoidanyneed-
less service costs that result from causes we cannot control
and cannot cover in our warranty.
Carefully read and follow all safety instructions in this
manual or on pump.
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one of the
following signal words and be alert to the potential for per-
sonal injury!
DANGER warns about hazards that will cause
serious personal injury, death or major property damage if
ignored.
WARNING warns about hazards that can
cause serious personal injury, death or major property dam-
age if ignored.
CAUTION warns about hazards that will or
can cause minor personal injury or property damage if ig-
nored.
The word NOTICE indicates special instructions which are
important but not related to hazards.
1.To avoid risk of serious bodily injury and property dam-
age, read safety instructions carefully before installing
pump.
2.Follow local and/or national plumbing and electrical
codes when installing pump.
3.Keep the well covered while installing pump to prevent
leaves and other debris from falling into well, contami-
nating well and possibly damaging pump.
4.Protect pump and piping system from freezing. Allowing
pump or water system to freeze could severely damage
pump and voids warranty.
Hazardous Voltage. Can shock, burn,
cause death, or start fires.
5.Disconnect electrical power source before installing or
working on pump.
6.Groundpumpwithagroundwirerun from groundinglug
on motor to a grounded lead in the service panel.
7.Line voltage and frequency of electrical power supply
must agree with motor nameplate.
8.Use of fuses or wire smaller than size recommended in
owner’smanualcancauseoverheating,possiblefires,and
will void warranty.
9.Pump water only with this pump.
10.Do not run pump dry. To do so will damage seals and can
cause leaking and property damage.
FULL ONE YEAR WARRANTY ON PUMPS
For one year from the date of purchase, Sears will repair or replace this pump, free of charge, if defective in material or work-
manship. LIMITED WARRANTY ON SEARS HYDRO-GLASS®PUMPS
After one year and through two years from the date of purchase, Sears will furnish, free of charge, a replacement part for any
defective part. You pay for labor.
This warranty does not cover repairs or replacement parts necessary because of abuse or negligence including failure to in-
stall, adjust and operate this pump according to the instructions in the owner’s manual.
LIMITATION OF WARRANTY
SEARS WILL NOT BE LIABLE FOR LOSS OR DAMAGE TO PROPERTY OR ANY INCIDENTAL OR CONSEQUENTIAL
LOSS OR EXPENSE FROM PROPERTY DAMAGE DUE DIRECTLY OR INDIRECTLY FROM THE USE OF
THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclu-
sion may not apply to you.
WARRANTY SERVICE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS SERVICE CENTER/DEPART-
MENT IN THE UNITED STATES. This warranty applies only while the product is in use in the United States.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Dept. 817 WA, Hoffman Estates, IL 60179
RULES FOR SAFE INSTALLATION AND OPERATION!

PREPARATION
BASIC TOOLS AND MATERIALS NEEDED
Pipe Wrenches Screwdriver
Hacksaw Check Valve
Adjustable Wrench Teflon Tape
Knife
NOTICE: Depth to water must not be more than 20’.
1. Long runs and many fittings increase friction and reduce
flow. Locate pump as close to water source as possible:
use as few elbows and fittings as possible.
2. Be sure water is clear of sand. Sand will plug the pump
and void the warranty.
3. Protect pump and all piping from freezing. Freezing will
split pipe, damage pump and void the warranty. Check
locally for frost protection requirements (usually pipe
must be 12” below frost line and pump must be insu-
lated).
4. Be sure all pipes and foot valve are clean and in good
shape.
5. No air pockets in suction pipe.
6. No leaks in suction pipe. Use Teflon tape or Plasto-Joint
Stik1to seal pipe joints.
7. Unions installed near pump and water source will aid in
servicing. Leave room to use wrenches.
8. Pump body may explode if used as a
booster pump. DO NOT use in a booster applica-
tion.
1Lake Chemical Co., Chicago, Illinois.
3
Figure 2 – Foot Valve Must Work Freely
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741 0993
Figure 1 – No Dirt Or Scale In Suction Pipe
Figure 4 – Suction Pipe Must Not Leak
Figure 3 – No Air Pockets In Suction

INSTALLATION
NOTICE: Usethe installation methodbelow whichmatches
your well type.
CASED WELL INSTALLATION
1. Inspect foot valve to be sure it works freely. Inspect
strainer to be sure it is clean.
2. Connect foot valve and strainer to the first length of suc-
tion pipe and lower pipe into well. Add sections of pipe
asneeded,usingTeflontapeonmalethreads. Be surethat
all suction pipe is leakproof or pump will lose prime and
failtopump.Installfootvalve10to 20 feetbelowthelow-
est level to which water will drop while pump is operat-
ing (pumping water level). Your well driller can furnish
this information.
3. To prevent sand and sediment from entering the pump-
ingsystem,thefootvalve/strainer shouldbeatleast5 feet
above the bottom of the well.
4. When the proper depth is reached, install a sanitary well
sealoverthepipeandinthewell casing. Tightenthebolts
to seal the casing.
5. Whenusing a foot valve, apriming tee andplug as shown
in Figure 5 are recommended.
DUG WELL OR OPEN WATER
INSTALLATION
1. Follow cased well installation, steps 1, 2, 3 and 5.
DRIVEN POINT INSTALLATION
1. Connect the suction pipe to the drive point as illustrated
in Figure 6. Keep horizontal pipe run as short as possible.
Use Teflon tape on male pipe threads. Multiple well
points may be necessary to provide sufficient water to
pump.
2. Install a check valve in piping as shown in Figure 6. Flow
arrow on check valve must point toward pump.
HORIZONTAL PIPING FROM WELL TO
PUMP
1. Never install a suction pipe that is smaller than the suc-
tion tapping of the pump.
2. To aid priming on driven point installations, install a line
check valve as shown in Figure 6. Be sure check valve
flow arrow points toward pump.
DISCHARGE PIPE SIZES
1. If increasing discharge pipe size, install reducer in pump
discharge tapping. Do not increase pipe size by stages.
2. When the pump is set away from the points of water use,
the discharge pipe size should be increased to reduce
pressure losses caused by friction.
• Up to 100’ run: Same size as pump discharge tapping.
• 100’ to 300’ run: Increase one pipe size.
• 300’ to 600’ run: Increase two pipe sizes.
4
Drive
Coupling
Drive
Point
Check
Valve
Drive point
below water
level
Suction Pipe
to Pump
2589 0996
Well
Casing
Foot
Valve
Sanitary
Well Seal
Suction Pipe
10'
Min.
5–10'
Strainer
2590 0996
Priming Tee
and Plug
Figure 5 – Cased/Dug Well Installation
Figure 6 – Driven Point Installation

INSTALLATION (Continued)
5
LAWN SPRINKLING APPLICATION
This pump is designed for lawn sprinkling. It is designed to
deliverplentyof wateratfull sprinklerpressure.It canpump
from a pond, cistern or well points.
Pump discharge can be divided to supply two (2) or more
sprinkler systems. A suggested multiple discharge to service
is shown in Figure 7.
Do not use in a pressure tank or booster pump appli-
cation.
Pump/Piping Installation
PUMP INSTALLATION
NOTICE: Use Teflon tape supplied with the pump for mak-
ing all threaded connections to the pump itself. Do not use
pipe joint compounds on the pump: theycanreact with
the plastic in the pump components.
1. Bolt pump to solid, level foundation.
2. Support all piping connected to the pump.
3. Wrap1-1/2 totwo layersof Teflon tape clockwise (as you
face end of pipe) on all male threads being attached to
pump.
4. Tighten joints hand tight plus 1-1/2 turns. Do not over-
tighten.
NOTICE: Install pump as close to water source as possible.
Long piping runs and many fittings create friction and re-
duce flow.
Useschedule80 orironpipe. See“WellPipe Installation”for
more information.
P
846 0494
Gate
Valve
Check
Valve
To
Service
Priming
Plug
Figure 7 – Multiple Discharge
P
843 0494
P
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Figure 8 – Bolt Pump Down
Figure 9 – Independently Support All Piping
Attached To Pump
TABLE II – PERFORMANCE CHART (IN GALLONS PER MINUTE)
390.262452 390.262552 390.262652
DISCHARGE 1 H.P. 1-1/2 H.P. 2 H.P.
PRESSURE DISTANCE ABOVE TO WATER
PSI 5’ 10’ 15’ 20’ 5’ 10’ 15’ 20’ 5’ 10’ 15’ 20’
10 55 49 48 45 67 61 56 46 69 67 65 62
15 51 46 45 44 66 58 55 45 65 63 60 58
20 45 42 39 37 61 56 54 44 59 56 54 52
25 38 35 32 29 55 52 51 43 52 50 48 45
30 31 28 24 20 48 45 44 37 47 45 42 40
35 23 19 16 11 39 37 34 28 42 38 35 32
40 17 13 8 – 33 27 20 11 34 30 27 23
45 – – – – 18 14 8 – 25 18 13 10
50 ––––––––147––
DISCHARGE
PIPE TAPPING 1-1/2” NPT 1-1/2” NPT 2” NPT
SUCTION
PIPE TAPPING 1-1/2” NPT 1-1/2” NPT 2” NPT

ELECTRICAL
Figure 10 – 115/230 volt motor wiring
connections.
Dual voltage motors come factory wired for 230 volt
operation. Inset shows 115 Volt conversion.
Do not alter wiring on single voltage motors.
Match motor voltage to power supply voltage.
Risk of serious or fatal
electrical shock.
Connect motor ground wire
before connecting power
supply wires.
Do not ground to a gas sup-
ply line.
Turn off power before work-
ing on pump or motor.
Match motor voltage and power supply voltage. Supply
voltage must be within ±10% of motor nameplate voltage.
Incorrect voltage can cause fire or seriously damage motor
and voids warranty. If in doubt, consult a licensed electri-
cian.
Use wire size specified in wiring chart. If possible, con-
nect pump to a separate branch circuit with no other appli-
ances on it.
1. Install, ground, wire and maintain pump in accordance
with your local electrical code and all other codes/ordi-
nances that apply. Consult your local building inspector
for code information.
2. Connect ground wire first as shown at left. Ground wire
mustbe asolid copperwire atleast aslarge aspower sup-
ply wires.
•Connectgroundwiretogrounded lead inservicepanel,
metal underground water pipe, well casing at least 10’
(3M) long, or to ground electrode provided by power
company.
3. Connect power supply wires as shown at left.
6
A
B
L2
L1
A
B
L2
L1
To convert dual-voltage motors
from 230 to 115 Volts:
Move white wire w/black
tracer from B to A.
Move black wire
from A to L1.
NOTICE: 2 HP motors
are 230 Volt only;
do not connect
to 115 volt power .
A
B
L2
L1
A
B
L2
L1
Clamp
power
cable
to prevent
strain on
terminal
screws.
White w/
Black Tracer
Black
Motor Ground
Screw
Connect ground wire
to motor ground screw
as shown.
Connect power supply wires
to the terminal board
as shown.
Ground
Wire
Blac
k
White
893 0494
WIRING CHART
Recommended Wire and Fuse Sizes
DISTANCE IN FEET FROM MOTOR TO METER
Branch 0’ 51’ 101’ 201’ 301’ 401’
Max. Fuse* Min. TO TO TO TO TO TO
Pump Load Rating* Wire 50’ 100’ 200’ 300’ 400’ 500’
Model HP Volt Amps Amps Size WIRE SIZE
115 14.8 20 12 12 12 8 6 6 4
390.262452 1230 7.4 15 14 14 14 14 14 12 10
115 19.2 25 10 10 10 8 6 4 4
390.262552 1-1/2 230 9.6 15 14 14 14 14 12 10 10
390.262652 2 230 12.0 15 14 14 14 14 12 10 10
*Dual element or Fusetron time delay fuses recommended for all motor circuits.

OPERATION
PRIMING THE PUMP
NOTICE: ‘Priming’refersto thepumpexpelling allairin the
systemandbeginning tomovewater fromitssource outinto
the system. It does not refer only to pouring water into the
pump (although pouring water in is usually the first step).
NOTICE: NEVER run pump dry. Running pump without
water in it will damage seals and can melt impeller and dif-
fuser. To prevent damage, fill pump with water before
starting.
1. Remove priming plug (Figure 11).
2. Make sure suction and discharge valves and any hoses on
discharge side of pump are open.
3. Fill pump and suction pipe with water.
4. Replace priming plug, using Teflon tape on thread;
tighten plug.
NOTICE: If a priming tee and plug have been provided
for a long horizontal run, be sure to fill suction pipe
through this tee and replace plug. (Don’t forget to Teflon
tape the plug.)
5. Start pump: water should be produced in 10 minutes or
less, the time depending on depth to water (not more
than 20’) and length of horizontal run (10’ of horizontal
suction pipe = 1’ of vertical lift due to friction losses in
the pipe).
If no water is produced within 10 minutes, stop pump,
release all pressure, remove priming plug, refill and try
again.
Hazardous pressure and risk of explo-
sion and scalding. If pump is run continuously at no
flow (that is, with discharge shut off or without prim-
ing), water may boil in pump and piping system.
Under steam pressure, pipes may rupture, blow off of
fittings or blow out of pump ports and scald anyone
near.
To prevent explosion, do the following:
A. Be sure discharge (valve, pistol grip hose nozzle, etc.) is
open whenever pump is running.
B. Ifpumpfailstoproducewaterwhenattempting to prime,
releaseallpressure, drain pumpandrefillwithcold water
after every two attempts.
C. Whenpriming,monitor pumpand piping temperature.If
pump or piping begin to feel warm to the touch, shut off
pump and allow system to cool off. Release all pressure
in system and refill pump and piping with cold water.
7
P
867 0494
P
858 0494
1117 0993
Figure 12 – Fill Pump Before Starting
Figure 14 – Do Not Run Pump With Discharge
Shut Off
Figure 11 – Remove Priming Plug
Figure 13 – Run Ten Minutes Or Less

MAINTENANCE
Pump and piping need not be disconnected to repair or re-
place motor or seal (see Figure 16). If motor is replaced, re-
place the shaft seal (Key No. 6, Page 11). Keep one on hand
for future use.
Be sure to prime pump before starting.
NOTICE: Check motor label for lubrication instructions.
The mechanical shaft seal in the pump is water lubricated
and self-adjusting.
NOTICE: Drain pump when disconnecting from service or
when it might freeze.
PUMP DISASSEMBLY
1. Disconnect power to motor.
NOTICE: Mark wires for correct assembly.
2. Remove clamp (see Figure 16).
3. Remove pump base mounting bolts. Motor assembly and
back half of pump can now be pulled away from pump
front half (Figure 16). CAREFULLY remove O-Ring.
CLEANING/REPLACING IMPELLER
NOTICE: First, follow instructions under “Pump Disas-
sembly”.
1. Remove four screws fastening diffuser to seal plate; re-
move diffuser (see Figure 17). Exposed impeller can now
be cleaned.
2. If impeller must be replaced, loosen two machine screws
and remove motor canopy (see Figure 18).
3. Capacitor voltage may be hazardous.
To discharge capacitor, hold insulated handle screw-
driver BY THE HANDLE and short capacitor terminals
together (see Figure 18). Do not touch metal screwdriver
blade or capacitor terminals. If in doubt, consult a quali-
fied electrician.
4. Unscrew capacitor clamp and remove capacitor. Do not
disconnect capacitor wires to motor.
5. Slide 7/16” open end wrench in behind spring loaded
switch on motor end of shaft; hold motor shaft with
wrench on shaft flats and unscrew impeller by turning
counterclockwise when looking into eye of impeller.
6. To reinstall, reverse steps 1 through 5.
7. See directions under “Pump Reassembly,” Page 10.
REMOVING OLD SEAL
1. Follow instructions under “Pump Disassembly”.
2. Follow steps 2 through 5 under “Cleaning/Replacing
Impeller.
3. Unscrew four nuts holding pump back half to motor.
Remove rotating half of seal by placing two screwdrivers
under back half of pump body and carefully prying up
(Figure 19). Back half of pump body will slide off shaft,
bringing seal with it.
NOTICE: Be sure you do not scratch or mar shaft; if shaft is
marred, it must be dressed smooth with fine emery or cro-
cus cloth before installing new seal. DO NOT reduce shaft
diameter!
8
845 0494
844 0494
Figure 18 – Hold Shaft
To avoid electrical
shock hazard, use
insulated-handle
screwdriver to short
capacitor terminals
as shown.
Figure 16 – Slide Motor Back
Figure 15 – Disconnect Power
Figure 17 – Remove Diffuser
889 0494
Figure 19 – Remove Seal plate

MAINTENANCE (Continued)
4. Place pump body half face down on flat surface and tap
out stationary half of seal (see Figure 20).
INSTALLING NEW SEAL
1. Wet outer edge of Rubber Cup on ceramic seat with liq-
uid soap. Be sparing!
2. Put clean cardboard washer on seal face. With thumb
pressure, press ceramic seal half firmly and squarely into
seal cavity in seal plate (see Figure 21). Polished face of
ceramic seat is up. If seal will not seat correctly, remove,
placingsealface up onbench. Reclean cavity.Sealshould
now seat correctly.
3. Ifsealdoesnotseatcorrectlyafterrecleaning cavity, place
cardboard washer over polished seal face and carefully
press into place using a piece of standard 3/4” pipe as a
press.
NOTICE: Be sure you do not scratch seal face.
4. Dispose of cardboard washer and recheck seal face to be
sure it is free of dirt, foreign particles, scratches and
grease.
5. Inspect shaft to be sure it is free of nicks and scratches.
6. Reassemble pump body half to motor flange. BE SURE it
is right side up.
7. Apply liquid soap sparingly (one drop is sufficient) to in-
side diameter of rotating seal member.
8. Slide rotating seal member (carbon face first) onto shaft
until rubber drive ring hits shaft shoulder.
NOTICE: Be sure not to nick or scratch carbon face of seal
when passing it over threaded shaft end or shaft shoulder.
The carbon surface must remain clean or short seal life will
result.
9. Hold motor shaft with 7/16” open end wrench on shaft
flats(Figure18, Page8)and screwimpelleronto shaft.Be
sure you do not touch capacitor terminals with
body or any metal object. Tightening impeller will au-
tomatically locate seal in correct position.
10.Remount diffuser on pump body half with five screws.
INSTALLING COPPER INSERT -
2 HP ONLY
NOTE: If the copper insert moves or shifts during seal re-
moval, it should be removed and reinstalled.
1. Remove copper insert as shown in Figure 22. Do not de-
form.
2. Replace copper insert:
A.Clean off all surplus Permatex from around insert cav-
ity. Be careful not to scratch or mark the machined
bore. It is important that this area be clean so no old
Permatex lodges behind the new insert and causes im-
proper seating.
B.Place small amount of No. 2 non-hardening Permatex
on surface of insert as shown. Smooth out with finger.
See Figure 23.
C.Pull insert into cavity as shown in Figure 24.
D.Clean out any surplus Permatex from insert cavity
where new seal will be located. See Figure 25.
9
477 0194
Figure 21 – Press in New Seal
Figure 22
Figure 23
479 0194
Figure 20 – Tap Out Seal To Disassemble
Wipe on small amount of
non-hardening Permatex
on this surface
Remove
Surplus
Permatex
Properly
Seated
Figure 25
Figure 24
7/8" Socket
Bolt
1-3/8" O.D.
Washer 038 0893

TROUBLESHOOTING CHART
10
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Motor will not run 1. Disconnect switch is off 1. Be sure switch is on
2. Fuse is blown 2. Replace fuse
3. Starting switch is defective 3. Replace starting switch
4. Wires at motor are loose, 4. Refer to instructions on wiring. Check and tighten all wiring.
disconnected, or wired incorrectly Capacitor voltage may be hazardous. To discharge
capacitor, hold insulated handle screwdriver BY THE HANDLE
and short capacitor terminals together. Do not touch metal
screwdriver blade or capacitor terminals. If in doubt, consult a
qualified electrician.
Motor runs hot and 1. Motor is wired incorrectly 1. Refer to instructions on wiring
overload kicks off 2. Voltage is too low 2. Check with power company. Install heavier wiring if wire
size is too small (See Electrical, Page 6)
Motor runs but no *1. Pump in new installation did 1. In new installation:
water is delivered not pick up prime through:
a. Improper priming a. Re-prime according to instructions
b. Air leaks b. Check all connections on suction line
c. Leaking foot valve c. Replace foot valve
*2. Pump has lost prime through: 2. In installation already in use:
a. Air leaks a. Check all connections on suction line and shaft seal
b. Water level below suction b. Lower suction line into water and re-prime. If receding water level
of pump in well exceeds suction lift, a deep well pump is needed
3. Impeller is plugged 3. Clean impeller; see Maintenance
4. Check valve or foot valve is stuck 4. Replace check valve or foot valve
in closed position
5. Pipes are frozen 5. Thaw pipes. Bury pipes below frost line. Heat pit or pump house.
6. Foot valve and/or strainer are 6. Raise foot valve and/or strainer above well bottom
buried in sand or mud
Pump does not 1. Water level in well is lower than 1. A deep well jet pump may be needed (over 20 ft. to water)
deliver water to full estimated
capacity (Also 2. Steel piping (if used) is corroded or 2. Replace with plastic pipe where possible, otherwise with new
check point 3 limed, causing excess friction steel pipe
immediately above) 3. Offset piping is too small in size 3. Use larger offset piping
*(Note: Check
prime before look-
ing for other
causes. Unscrew
priming plug and
see if there is
water in priming
hole.)
PUMP REASSEMBLY
1. Clean O-Ring and O-Ring groove.
2. Put O-Ring in groove on face of flange; put pump halves
together (see Figure 26).
3. BE SURE inside of clamp is clean. Place clamp on pump
halves; snug up. Alternately tighten screw and tap clamp
with mallet to seat O-Ring (see Figure 27).
4. Replace base mounting bolts.
5. Replace motor wiring; close draincock.
6. Prime pump according to instructions. See “Operation.”
7. Check for leaks.
L
1
7
6
-
3
5
P
854 0494
Figure 26 – Assemble Pump
Figure 27 – Tap Clamp While Tightening
P
856 0494
MAINTENANCE (Continued)