Flint & Walling Commander Pro 75 - Manual (Page 5)

5
95 North Oak Street • Kendallville, IN 46755
Copyright 2012. All Rights Reserved.
IL0098
IL0099
Figure 4
2. Zero the ohmmeter by clipping the leads together and
adjusting the zero ohm knob until the needle indicates
zero. Zero the ohmmeter before each use or every
time selector switch is changed.
3. Clip one ohmmeter lead to bare cable end.
4. Clip the other lead to edge of steel tank in which
pump and cable are submerged. If pump is already in
the well, clip lead to discharge pipe metal well casing
or bare ground wire.
5. A reading of less that 1,000,000 ohms indicates that
cable or splice is grounded. Slowly raise cable from
the water at the ohmmeter end. When trouble spot
moves clear of the water, needle will move toward
infinity reading. In an old installation with the pump in
the well, a reading of 20,000 ohms or less indicates
a breakdown in the insulation; in this case pull the
pump.
PUMP INSTALLATION
1. The following pump installation instructions use
Schedule 80 PVC pipe or galvanized pipe. If either
of these two types are used, a foot clamp or vise will
be required to hold the PVC or galvanized pipe when
connecting the next pipe length.
2. Install the pump in a well which is sand-free, straight,
and has sufficient flow of water to supply the pump.
Clear well of sand and any other foreign matter with a
test pump before installing the submersible pump.
NOTE: Using the submersible pump to clean the well will
void the warranty. When drilling a new well in an area
where sand is a problem, a sand screen must be installed
to protect the pump and motor.
3. Chlorinate the well first. Drop 24 to 48 HTH (chlorine)
tablets into the well before lowering the pump into the
well. This will prevent contamination and the growth
of iron bacteria which could later plug the well and the
pump. The chlorinated water will be pumped out of
the system when testing the pump flow.
4. BE SURE the top edge of the well casing is perfectly
smooth; sharp or jagged edges can cut or scrape the
cable and cause a short.
5. Install a line check valve within 25 feet of the pump
and below the draw down level of the water supply.
The check valve should be the same size as the
discharge outlet of the pump or larger.
NOTE: Use of pipe smaller than the discharge tapping of
the pump will restrict the capacity of the pump and lower
its operating performance.
6. When connecting the first length of pipe and
placing the pump in the well casing, care should be
maintained to center the pump in the well. It is easier
to handle the pump if a short piece of pipe is installed
first, rather than a long piece. Install the check valve
at the end of the first piece of pipe prior to lowering
the pump into the well. Maintain alignment as the
pump is placed and lowered into the well, a torque
arrester is recommended to keep the pump centered
in well. Wrap the pipe with enough tape at top and
bottom of torque arrestor to keep it from sliding up the
pipe while the pump is being lowered into the well.
7. If not already done, splice the electrical cable to the
motor leads. The cable and ground wire should be
taped to the discharge pipe. Tape the cable about 5
feet above the discharge and every 20 feet thereafter.
Install cable guards if required to eliminate rubbing
against the well casing. Do not let the cable drag over
the edge of the well casing. Never allow the weight of
the pump to hang on the cable alone.
8. Lower the pump into the well slowly without forcing.
Use a vise or foot clamp to hold the pipe while
connecting the next length. A boom, tripod or
pump setting rig is recommended. Lower pump to
approximately 10 feet below maximum draw down of
the water if possible and keep approximately 10 feet
from the bottom. DO NOT set pump on bottom of
well. Before each new length of pipe is added, attach
the coupling to the top of the pipe length. This will
provide a stop for the foot clamp to hold while the next
section of pipe is being installed.
WELL SEAL/PITLESS ADAPTER INSTALLATION
1. All installations should have a well seal. Make sure
the seal is seated and tighten the bolts evenly.
NOTE: Be sure to assemble the tee to the pipe above
the well seal to prevent dropping the pipe and pump down
the well as you lower it.