Section 5: Xe Series 4" Submersible Motors; Motor Inspection; Testing; Storage And Transportation - Pentair Pentek Series Electronic Manual

SECTION 5: XE Series 4" Submersible Motors

5.1

Motor Inspection

Check the motor for damage in shipping.
Before installation, check the following.
• Check over all tools, especially the hoisting gear, for
wear or damage before hoisting unit.
• Inspect the motor cable for any nicks or cuts.
• Verify that motor nameplate data matches
registration card information exactly.
• Verify that motor nameplate voltage is correct for
available power supply voltage. Voltage must not vary
more than +/-10% from nameplate rated voltage.
• Verify that the well diameter is large enough to
accommodate the motor/pump unit all the way to the
pump setting depth.
• For installations with tight well casings, make sure
that riser pipe flanges are recessed to protect
the power and control cables from abrasion and
squeezing during installation.
Heavy object. Lifting equipment must be
capable of lifting motor and attached equipment.
• If the total length of the pump motor unit (without
any riser pipe) exceeds 10' (3m), the unit must be
supported with a girder while hoisting. Do not remove
supporting girder until unit is standing vertically in the
hoist. Check for damage.
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5.2

Testing

Insulation Resistance
To check for insulation resistance:
1. Disconnect power to the motor for this test.
2. Connect an Ohm meter (resistance in Ω) between the
power leads and the motor ground or well casing.
20KΩ Damaged motor, possible result of
lightning strike.
500KΩ Typical of older installed motor in well.
2 MΩ Newly installed motor
10 MΩ Used motor, measured outside of well
20 MΩ New motor without cable
5.3

Storage and Transportation

The motors are filled with a non-toxic, Propylene Glycol
and water solution to prevent damage from freezing
temperatures. The solution will prevent damage from
freezing temperatures to -40˚F (-40˚ C). Motors should
be stored in areas that do not go below this temperature.
The solution will become slushy between 0˚F (-17˚C) and
-40˚F (-40˚C) but no damage occurs. If this occurs, allow
the motor to sit in the well for several minutes before
operating.
Storage site should be clean, well vented, and cool.
Keep humidity at the storage site as low as possible.
Protect motor and cables from direct sunlight.
Protect power supply cables and control cables from
moisture by taping the cable ends with electrician's tape.
Do not kink power supply or control cables.
Take care when moving unit (packed or unpacked) with
crane or hoisting gear not to knock it against walls, steel
structure, floors, etc. Do not drop motor.
Do not lift motor or motor/pump unit by power supply or
control cables.