Storage And Drain/Fill Instructions - Pentair Pentek Series Electronic Manual

SECTION 7: Hitachi
7.2 Testing
5. Verify motor is filled with clean water before
installing. The warranty is void if this is not done.
Also check the tightness of all water filling and drain
plugs, mounting bolts and cable connections.
6. Do not hammer the shaft, coupling or slinger since
this may damage the thrust bearing. Check the
rotation of the motor by hand to insure that it turns
freely.
7. Do not drop the bottom end of the motor in the dirt or
mud since this may plug up the diaphragm opening.
8. If motor is to be installed horizontal, make sure that
the lead wires are at the 12 o'clock position when
facing the motor shaft (in horizontal position).
NOTE:
There are no bearings that need oil or grease. The motor,
being inaccessible, should be monitored through its
electrical connections.
• A) Measure and record operating current and voltage.
• B) Measure and record the motor insulation
resistance. Any resistance of less than 50 megohm
(5,000,000) for a new motor should be evaluated or
checked further by a qualified service shop.
• Lightning arrestors and/or surge capacitors will help
prevent damage to the control box, cables, and motor.
• Single-phase protection will help in preventing motor
failure due to adverse incoming primary power.
• Based on the values obtained in A and B above and
the output flow rates and pressures of the pump,
a complete picture of total performance can be
obtained. This can be used to determine any pump
and motor maintenance and overhauling which might
be required.
• If the motor is to be stored, protect the unit from
freezing by storing in an area with a temperature
higher than -30°C (-22° F).
Hitachi is a registered trademark of Hitachi Industrial Equipment Systems Co., Ltd.
®
6" and Larger Submersible Motors
®
7.3 Storage and Drain Fill Instructions
1. After energizing the motor, check the flow and
2. When starting the pump for the first time, inspect
3. During testing or checking rotation (such as
4. For automatic (pilot device) operation, the motor
5. Input voltage, current and insulation resistance
pressure of the pump to make sure that the motor
is rotating in the correct direction. To correct a
wrong rotation, switch any two of the three cable
connections. (Three-phase motor only)
the water for sand. If sand appears, then continue
to pump till the water clears up; otherwise, sand
will accumulate in the pump stages and will bind or
freeze the moving parts if water is allowed to flow
back down the well.
"humping" or "inching") the number of "starts"
should be limited to 3, followed by a full 15 minute
cooling-off period before any additional "starts''
are attempted. Depending on the depth of the well
and/or method of checking, these rotational checks
or ''starts'' may actually be full-fledged starts. If
this is the case, then a full cooling-off period of 15
minutes is required between this type of start.
should be allowed to cool for 15 minutes between
starts.
values should be recorded throughout the life of
the installation and should be used as a from of
preventive maintenance.
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