Troubleshooting Chart; Performance Chart - Sears HYDRO-GLASS 390.262501 Owner's Manual

Troubleshooting Chart
SYMPTOM
Motor wile not
run
Motor runs hot
and overload
kicks off
Motor runs but
no water is
is delivered
*(Note: Check
prime before
looking for
other causes.
Unscrew prim-
ing plug and see
if there is water
in priming hole.)
Pump does not
deliver water
to full capacity
(Also check
point 3 imme-
diately above)
POSSIBLE CAUSE(S)
1. Disconnect switch is off
2. Fuse is blown
3. Starting switch is defective
4. Wires at motor are loose, dis-
connected, or wired incorrectly
1. Motor is wired incorrectly
2. Voltage is too low
"1. Pump in a new installation did
not pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
*2. Pump has lost its prime
through:
a. Air leaks
b. Water level below suction
of pump
3. Impeller is plugged
4. Check valve or foot valve is
stuck in closed position
5. Pipes are frozen
6. Foot valve and/or strainer are
buried in sand or mud
1. Water level in well is lower than
estimated
2. Steel piping (if used) is
corroded or limed, causing
excess friction
3. Offset piping is too small in size
CORRECTIVE ACTION
1. Be sure switch is on
2. Replace fuse
3. Replace starting switch
4. Refer to instructions on wiring. Check and tighten
all wiring.
1. Refer to instructions on wiring
2. Check with power company. Install heavier
wiring if wire size is too small. See Electrical, P. 7.
1. In new installation:
2.
3.
4.
5.
6.
a. Re-prime according to instructions
b. Check all connections on suction line.
c. Replace foot valve
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 well exceeds suction
lift, a deep well pump is needed.
Clean impeller; see Maintenance
Replace check valve or foot valve
Thaw pipes. Bury pipes below frost line. Heat pit
or pump house.
Raise foot valve and/or strainer above well
bottom
1. A deep well jet pump may be needed (over 20 ft. to
water)
2. Replace with plastic pipe where possible, other-
wise with new steel pipe
3. Use larger offset piping
DISCHARGE
PRESSURE
P.S.I.
10
15
20
25
30
35
DISCHARGE
PIPE
TAPPING
SUCTION
PIPE
TAPPING
TABLE II
PERFORMANCE CHART (IN GALLONS PER MINUTE)
390.262401 390.262501 390.262601
1 H.P. 11/zH.P. 2 H.P.
5' 10' 15' 20'
65 59 56 48
58 55 50 45
51 47 44 39
42 37 34 29
31 26 22 --
18 4 -- --
11/2 '' NPT
11/2"NPT
DISTANCE ABOVE WATER
5' 10' 15' 20'
80 71 68 56
77 68 66 55
69 63 60 54
59 55 50 46
49 44 36 33
36 27 12 --
5' 10' 15' 20'
83 78 68 57
81 77 67 56
78 76 66 55
72 69 62 54
61 56 50 45
46 41 22 7
1!/2" NPT
11/2"NPT
11/2"NPT
11/2 '' NPT
11