6
En
gli
sh (US
)
If plastic discharge pipe and well casing are
used, a properly sized bare copper wire should
be connected to a stud on the motor and run to
the control panel.
Connect the grounding wire to the ground point
first and then to the terminal in the control box or
panel.
5.3.5 Wiring checks
Before making the final wiring connections of the
drop cable to the control box terminal, it is a
good practice to check the insulation resistance
to ensure that the cable is good.
Measurements for a new installation must be at
least 1,000,000 ohm. Do not start the pump if
the measurement is less than this. If it is higher,
finish wiring and verify that all electrical
connections are made in accordance with the
wiring diagram. Check to ensure the control box
and high voltage surge arrester have been
grounded.
6. Startup
After the pump has been set into the well and
the wiring connections have been made, the
following procedures should be performed:
1. Attach a temporary horizontal length of pipe
with installed gate valve to the riser pipe.
2. If required, make provisions to capture
discharged fluids for disposal.
3. Adjust the gate valve one-third open.
4. Start the pump and let it operate until the
water runs clear of sand and silt.
5. As the water clears, slowly open the gate
valve in small increments until the desired
flow rate of clear water is reached. The pump
should not be operated beyond its maximum
flow rating and should not be stopped until
the groundwater runs clear.
6. If the groundwater is clean and clear when
the pump is first started, the valve should still
be opened until the desired flow rate is
reached.
7. Disconnect the temporary piping
arrangements and complete the final piping
connections.
8. Under no circumstances should the pump
be operated for any prolonged period of
time with the discharge valve closed. This
can result in motor damage due to
overheating. A properly sized relief valve
should be installed at the well head to
prevent the pump from running against a
closed valve.
9. Start the pump and test the system. Check
and record the voltage and current draw on
each motor lead.
7. Operation
The pump and system should be periodically
checked for water quantity, pressure, drawdown,
periods of cycling, and operation of controls.
A properly sized relief valve should be installed
at the well head to prevent the pump from
running against a closed valve.
If the pump fails to operate, or there is a loss of
performance, refer to section
8. Troubleshooting.
For additional information, refer to the MP1,
SPE VFD (Variable Frequency Drive) Installation
and Operating Instructions manual.
Caution
Do not ground to a gas supply line.
Caution
Under no circumstances should be
the pump be operated for any
prolonged periods of time with the
discharge valve closed. This can
result in motor and pump damage
due to overheating.
SPE_ US.book Page 6 Thursday, May 5, 2011 8:18 PM
