Application Limits - Pentair PENTEK Serie Manual Del Propietário

Safety

APPLICATION LIMITS

Maximum Immersion Depth: 985 ft. (300 m)
Maximum Water Temperature: 95°F (35°C)
pH content of the water: 6.5–8
Minimum Cooling Flow Rate: 0.5 feet per second (fps)
(0.15meters per second (mps)).
Required line voltage at the motor under operating
conditions (±10%).
NOTICE When calculating voltage at the motor, be sure to
allow for voltage drop in the cable.
The sum of the absolute values of the voltage and frequency
must not vary from the sum of the nominal values by more
than ±10%.
Operating with current unbalanced on the three legs of the
circuit can overheat and damage the motor and will void the
warranty. Current imbalance must not exceed 5% maximum.
Maximum Sand Content: 50ppm (max. size 0.1–0.25mm)
Maximum Chlorine Ion Content: 500ppm
Problem
Motor does not start, but does not blow fuses
or trip circuit breaker
Motor starts, but fuses blow or circuit breakers
trip
Motor starts and runs, then blows fuse or trips
circuit breaker
Motor does not start, but fuse blows or circuit
breaker trips
Possible Causes
Defective fuses or circuit breakers
Loose or corroded terminals
Damaged or defective connections
No incoming power
Wrong voltage
Incorrect fuses or relay
Incorrect connections
Locked rotor or pump
Insufficient insulation on motor cables
Incoming voltage more than 10% high or low
Sand in well
locked rotor or pump
Solution
Replace fuses or circuit breakers. Clean and
tighten connections and motor lead terminals.
Repair or replace connections.
Contact power company.
Make sure that nameplate rated voltage
matches nominal power supply, and that
actual supply voltage is within ±10% of
nameplate voltage.
Install correct fuses or relay.
Re-connect motor wires correctly.
Make sure that motor is at least 10ft above
bottom of well, check well for sand.
Install new motor cables; recheck resistance
with Megohmeter.
Confirm high or low voltage in motor cable,
consult power company.
Pull the pump and clean the well.
Check for sand in well.
Make sure that motor is at least 10ft above
the bottom of the well.
Pull pump and check for mechanical obstruc-
tion in the pump and for free rotation of the
motor.
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