Sears 390.262451 Owner's Manual page 10

Troubleshooting Chart
SYMPTOM
Motor will not run
POSSIBLE CAUSE(S)
1. Disconnect switch is off
2, Fuse is blown
3, Starting switch is defective
4. Wires at motor are loose,
disconnected, or wired incorrectly
Motor runs hot and 1, Motor is wired incorrectly
overload kicks off Z Voltage is too low
Motor runs but no "1. Pump in new installation did 1, In new installation:
water is delivered
*(Note: Check
prime before i'2
looking for other
causes Unscrew
priming plug and
see if there is water 3.
in priming hole) 4
CORRECTIVE ACTION
I Be sure switch is on
2 Replace fuse
3, Replace starting switch
4 Refer to instructions on wiring Check and tighten all wiring.
[ _WARNiNG [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
electriclano
1. Refer to instructions on wiring
2 Check with power company, Install heavier wiring if wire
size is too small (See Electrical, Page 6)
not pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
Pump has lost prime through:
a Air leaks
b Water level below suction
of pump
impeller is plugged
Check valve or foot valve is stuck
in closed position
a, Re-prime according to instructions
b Check all connections on suction line
c Replace foot valve
2. In installation already in use:
a. Check all connections on suction line and shaft seal
b Lower suction line into water and re-prime If receding water level
in welt exceeds suction lift, a deep wel! pump is needed
3. CIean impeller; see Maintenance
4 Rep]ace check valve or foot valve
5 Pipes are frozen 5, Thaw pipes. Bury pipes below frost line, Heat pit or pump house
6 Foot vatve and/or strainer are 6, Raise foot valve and/or strainer above wel! bottom
bu!!ed in sand or mu d
Pump does not full 1 Water level in well is Iower than 1 A deep well jet pump may be needed (over 20 ft to water)
deiiver water to estimated
capacity (Also 2 Steel piping (if used) is corroded or 2. Replace with plastic pipe where possible, otherwise with new steel pipe
check point 3 llmed, causing excess friction
immediately above _, 3. Offset piping is too small in size 3. Use larger offset piping
DISCHARGE
PRESSURE
PS!
10
15
20
30
35
40
45
50
DISCHARGE
PIPE
TAPPING
SUCTION
PIPE
TAPPING
TABLE II
PERFORMANCE CHART (IN GALLONS PER MINUTE)
5' 10' 15'
55 49 48
51 46 45
390.262451 390.262551 390.262651
1 H.P. 1-t/2 H,P. 2 H_P.
DISTANCE ABOVE TO WATER
20' 5' 10' 15' 20'
45 67 6] 56 46
44 66 58 55 45
5' 10' 15' 20'
69 67 65 62
65 63 60 58
4s 42 " 37 I I so I 1 44 " so So s4 s2
38 35 32 29 55 52 . 51 . 43 . 52 . 50 . 48 _ 45
31 28 24 20 48 45 44 37 47 45 42 40
23 19 ]6 11 39 37 34 28 42 38 35 32
t7 13 8 33 27 20 11 34 30 27 23
- - 18 14 8 . - . 25 . 18 . 13 10
m
1-1/2" NPT
m
I-1/2" NPT
14
7 u
2" NPT
1-1/2" NPT 1-1/2" NPT 2" NPT
]o