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Maintenance (Continued)
PRE-CHARGED TANKS
If a pre-charged tank becomes water-
logged, the bladder is probably leaking
or broken.
1. Test the tank by depressing the air
valve. The valve will discharge water
if the bladder is broken.
2. If bladder is broken, replace tank.
Once a tank bladder is ruptured, the
tank should be replaced. Repairing
the bladder is not recommended, and
may cause further problems such as:
repeated water-logging, debris in pipes
and clogged discharge in tank.
AIR PRESSURE CHECK FOR PRE-
CHARGED TANKS
Small amounts of air loss is normal
in any tank. To prevent failure and
properly maintain a pre-charged water
tank, check the pressure on a yearly
basis.
1. Disconnect power to pump.
2. Open a faucet nearest the tank and
allow all water to drain from the
tank.
3. Measure the tank pre-charge at the
valve stem using a tire gauge.
4. If necessary, adjust the pre-charge
with an air pump: Precharged
pressure for the this pump is 28-30
psi.
5. Prime the pump.
6. Reconnect power.
7. Close faucet.
Operating Instructions & Parts Manual
JSU50
FRICTION LOSS CHART
Feet Friction Loss in 100 Feet of Plastic Pipe
Gallons Per Minute
Pipe Size 20 25 30 40 50 60 80 100 120
1-1⁄4” 5.6 8.5 11.9 20.2 30.5
1-1⁄2” 2.6 4.0 5.5 9.4 14.3 19.9 34.2
2“ 1.2 1.6 2.8 4.2 5.8 9.9 15.0 21.2
2-1⁄2“ 1.2 1.8 2.5 4.2 6.3 8.8
RECOMMENDED FUSING & WIRING DATA - 60 HZ MOTORS
HP VOLT
Dual
Element
Fuse
250V
Distance in Feet
From Meter to Motor
0 51 101 201
to to to to
50 100 200 300
Wire Size
1/2
115 15 14 12 10 8
230 10 14 14 14 14