7
PN524 (08-01-20)
Check Valve at surface
To Service
Riser Pipe
1st. Check Valve
not more than
25 Ft. above pump
OR
1st. Check Valve
mounted directly
on pump
Submersible
Pump
200' Max
Top Check
To Surface
25' Max
Not
to
Scale
To avoid water hammer and
pipe or pump damage,
DO NOT
install a check valve
half-way between the pump
and ground level.
Install Check
Valves Every 200'
For Full Length
of Riser Pipe
5022 0505
Figure 2: Check Valve Location
Figure 4: Load Current Test
INSTALLATION
riser pipe should be not more than 200’ below the surface. Finally,
install a check valve near the well head in the horizontal pipe at
the surface (see Figure 2).
NOTICE:
To avoid water hammer and pipe breakage,
do not
put a
check valve exactly half-way up the riser pipe (that is, with equal
distance down to the pump and up to the surface), especially if it
is the only check valve in the riser pipe after the pump discharge
check. The ‘equal distance’ in both legs of the pipe can allow
resonations from water hammer which can blow the pump off the
riser pipe.
WELL AND PUMP TEST
Check and record static water level of well before starting tests.
Before making final piping connections, test flow rate, capacity,
and condition of well.
NOTICE:
Do not operate pump with discharge valve closed.
Operate pump only within pressure and flow limits of operating
range established by performance curve.
NOTICE:
If sand is present in discharge, allow pump to run with
discharge completely open until water is clear. If loud rattling
noises develop, pump is probably cavitating. Gradually close
discharge valve until rattling stops.
INSTALLATION - ELECTRICAL TESTS
Risk of high voltage electrical shock when
testing. Can stun, burn, or kill.
Only qualified electricians should perform these tests. When
testing, use all normal precautions for the voltages involved.
ELECTRICAL TEST OF MOTOR, CABLE, CONNECTIONS
The cable and splices can be damaged as the pump is lowered into
the well. To electrically test them, attach one lead of ohmmeter
to pipe. Attach other lead to each cable lead in turn. See motor
owner’s manual for required resistance in a good motor. A low
reading indicates that cable or splice has developed a leak to
ground. Remove pump from well and correct problem before
proceeding with installation.