Master 123340 User Manual

Operation 9
For parts or assistance, call Master Plumber Customer Service at 1-800-628-9439
* (Note: Stop pump;
then check prime
before looking
for other causes.
Unscrew priming plug
and see if water is in
priming hole).
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Motor will not run Disconnect switch is off Be sure switch is on.
Fuse is blown or circuit breaker tripped Replace fuse or reset circuit breaker.
Starting switch is defective DISCONNECT POWER; Replace starting switch.
Wires at motor are loose, Refer to instructions on wiring (Page 7). DISCONNECT POWER; check and
disconnected, or wired incorrectly tighten all wiring.
Motor runs hot and Motor is wired incorrectly Refer to instructions on wiring.
overload kicks off or
Voltage is too low Check voltage being supplied to motor. Install heavier wiring if wire size is
motor does not run
too small (See Electrical / Wiring Chart).
and only hums
Motor runs but no Pump in new installation did In new installation:
water is delivered* not pick up prime through:
1. Improper priming 1. Re-prime according to instructions.
2. Air leaks 2. Check all connections on suction line, with soapy water or
shaving cream.
3. Leaking foot valve or check valve 3. Replace foot valve or check valve.
4. Pipe size too small 4. Re-pipe using size of suction and discharge ports on pump.
Pump has lost prime through: In installation already in use:
1. Air leaks 1. Check all connections on suction line and shaft seal with soapy water.
2. Water level below suction pipe inlet 2. Lower suction line into water and re-prime. If receding water level
in well exceeds 25’ (7.6M), a deep well pump is needed.
Impeller is plugged Clean impeller.
Check valve or foot valve is stuck shut Replace check valve or foot valve.
Pipes are frozen Thaw pipes. Bury pipes below frost line. Heat pit or pump house.
Foot valve and/or strainer are Raise foot valve and/or strainer above bottom of water source.
buried in sand or mud Clean foot valve and strainer.
*Pump does not Water level in well is lower than A deep well jet will be needed if your well is more than 25’ (7.6M)
deliver water to full estimated depth to water.
capacity
Steel piping (if used) is corroded or Replace with plastic pipe where possible, otherwise with new steel pipe.
limed, causing excess friction
Piping is too small in size Re-pipe using size of suction and discharge ports on pump.
Pump not being supplied with Add additional well points.
enough water
Pump leaks Clamp loose STOP PUMP, tighten clamp nut 1-2 turns. Alternately tighten and tap on
around clamp clamp with mallet to seat O-Ring. Do not overtighten.
Troubleshooting
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.
Performance Chart / GPM(LPM)
Discharge
123340 – 1 HP 123341 – 1-1/2 HP 123342 – 2 HP
Pressure
Height Of Pump Above Water / Feet (Meter)
PSI (kPa) 5’ (1.5) 10’ (3) 15’ (4.6) 20’ (6.1) 5’ (1.5) 10’ (3) 15’ (4.6) 20’ (6.1) 5’ (1.5) 10’ (3) 15’ (4.6) 20’ (6.1)
10 (69) 55 (208) 49 (185) 48 (181) 45 (170) 67 (254) 61 (231) 56 (212) 46 (174) 69 (261) 64 (242) 65 (246) 62 (235)
15 (103) 51 (193) 46 (174) 45 (170) 44 (166) 66 (250) 58 (220) 55 (208) 45 (170) 65 (246) 62 (235) 60 (227) 57 (215)
20 (138) 45 (170) 42 (159) 39 (148) 37 (140) 61 (231) 56 (212) 54 (204) 44 (166) 59 (223) 56 (212) 54 (204) 52 (197)
25 (172) 38 (144) 35 (132) 32 (121) 29 (110) 55 (208) 52 (197) 51 (193) 43 (163) 52 (197) 50 (189) 48 (181) 46 (174)
30 (207) 31 (117) 28 (106) 24 (90) 20 (76) 48 (181) 45 (170) 44 (166) 37 (140) 47 (178) 45 (170) 42 (159) 40 (151)
35 (241) 23 (87) 19 (72) 16 (60) 11 (42) 39 (147) 37 (140) 34 (129) 28 (106) 42 (159) 38 (144) 35 (132) 32 (121)
40 (276) 17 (64) 13 (49) 8 (30) 33 (125) 27 (102) 20 (76) 11 (42) 34 (129) 30 (113) 27 (102) 23 (87)
45 (310) 18 (68) 14 (53) 8 (30) 25 (95) 18 (68) 13 (49) 10 (38)
50 (345) 14 (53) 7 (26)
All models except 123340 have discharge and suction size of 1-1/2 " NPT. 123340 has 2 " NPT suction and discharge.

Master 123340 Specifications

General

Brand	Master
Model	123340
Category	Water Pump
Language	English