be constructed of solid concrete, how ever, adequate beams or timbers may be used. A common founda-
tion consists of the following concrete mixture:
1.
One part cement
2.
Two parts sand
3.
Four parts gravel with sufficient water to make a stiff mix
5.3 Preparation for Installation
•
Lay out of the column pipe and bowl/motor assembly on suitable timbers keeping all material out of
the dirt. Pipe coupling ends should be located towards the well. Clean all threads thoroughly and
coat with joint compound as installed. All other parts should be laid out in the order in which they
will be used.
5.4 Checking Resistance
Before removing shipping skids, resistance of motor and cables should be checked with a proper instru-
ment such as a megger. Make cable splice, if not already done at the factory, as follows:
1.
Tape cable splice
a) Snip outer jacket in two or three places and remove jacket, with Sta-Kon or other similar pliers,
peeling jacket back approximately one foot. Remove any cotton or other tape from individual
conductors in order to expose the insulation of each wire. Strip the insulation of each conductor
back far enough to allow the conductor to extend half way through a sleeve type connector.
Crimp connector to the conductor. Strip motor lead insulation back far enough to fit into connec-
tor and butt against cable end. Crimp connector as before. Pull on wire to make sure connector
is firmly crimped to both the motor lead and cable. Scrape the insulation to remove any loose
bits of tape or thread and roughen surfaces. Thoroughly clean surfaces with a solvent (Naph-
tha, lacquer thinner, etc.). This will insure a watertight splice.
b) Using a self-bonding polyethylene based tape, start a the center of the connector and tape one
inch past end of connector, stretching tape about 10% while taping. Overlap tape about one
half of tape width. Continue taping back past connector one inch on the other side. This com-
pletes the first layer of tape. Upon completing each layer, coat tape with Scotch-Kate electrical
coating 31KBB or a similar material. Tape next layer back past connector one inch farther than
the first wrap so that the conductor is now taped two inches from the end of the connector. This
completes the second layer. Tape back past the center again to opposite end, this time one
inch farther than the second layer of tape, completing the third layer.
c)
Tape back to the center and cut off the tape. Connector has now been taped at center with four
layers of half lapped tape. Using vinyl plastic electrical tape, start at the center of the splice and
tape one inch past the end of the insulating tape. Stretch the tape about 25% while taping and
overlap about one-half tape width. Wrap to the other end, past the center of the splice and one
inch past the end of the polyethylene based tape, thus completing the fifth layer. Tape sixth and
seventh layers, extending each layer one inch past the previous one.
d) To finish the taped splice, tape back to the center and cut the tape off. The overall length of the
taped splice should be approximately 12" long and have eight layers of tape, four insulating
and four jacketing.
2.
Cast Cable Splice
a) To prepare the 3-conductor power cable for splicing, insert a sharp knife blade between the ca-
ble jacket and the lead insulation and strip the jacket back 2½" from the end, taking care not to
cut the lead insulation. Strip the cambric wrapping (if any) off of the conductors and strip back
rubber insulation 5/e" from the end. Assemble the cable connectors and crimp them in place
using a crimping tool. If cables are too large for the connectors, cut off enough strands to re-
duce them to the size of the connectors.
5.3 Preparation for Installation
VIS Installation, Operation and Maintenance Instructions
17
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