Barmesa Pumps 62070007 Manuale di installazione, funzionamento e manutenzione - Pagina 14
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Risk of electric shock. Always disconnect the pump from the power source before handling inspections or repairs.
A) The pump does not prime,
the vacuum gauge indicates a
lower reading than normal.
B) The pump does not prime,
the vacuum gauge reading
indicates higher than normal.
C) The pump priming good
vacuum gauge reading is
normal, the manometer
indicates a lower pressure than
normal.
D) The pump priming good
barmesa.com
vacuum gauge reading is
almost normal, reading the
manometer is greater.
E) The pump loses its priming
during operation, vacuum
gauge reading drops to zero.
F) The pump priming pumps
well and satisfactorily but noisy.
G) Motor overload.
NOTE: Barmesa Pumps assumes no responsibility for damage or injury due to disassembly in the field. Disassembly of the pumps or supplied accessories other
than at Barmesa Pumps or its authorized service centers, automatically voids warranty.
PROBLEM
PROBABLE CAUSE
1. Air leak in the suction
system.
2. Insufficient liquid in the
pump casing.
3. Low operating speed.
4. Bound pump.
5. Mechanical defect.
1. Pipe clogged suction.
1. The pump speed is very
low.
2. Mechanical defects.
1. Discharge obstructed.
1. suction dynamic level
too high.
2. The pump is sucking air.
1. Pump base is loose.
2. Cavitation.
3. Bearings.
4. Vibration.
1. Low Voltage.
2. Overload.
Troubleshooting Chart
CHECK
- Threaded joints in the suction tightness.
- Gaskets for no wear.
- The mechanical seal for leaks.
- The drain plug has leaks.
- The vacuum gauge may be leaking.
- That the pump´s body is lled with water.
- The motor speed (RPM).
- Impeller rotates freely.
- Internal parts are clean.
- That the internal parts are not worn.
- The suction line is clean.
- The voltage is correct.
- The internal parts for wear.
- The discharge is clear of obstructions.
- That the discharge valves operate correctly.
- When the pump is operating, never lacks
water in the suction.
- For leaks in suction piping, anges and
gaskets.
- That there is no vortex effect at the end of
the suction, this lack of water.
- That screws are tight at the base.
- There are no cracks in the base.
- The dynamic level is not too high
- That the pumping capacity is not too much.
- The pump is operating in the range of NPSHR
- If reducing ow makes the noise gone, then
the problem is in the point above; partially
close the discharge valve.
- The bearings for wear.
- That there is oil in the deposit.
- The impeller does not have any foreign
material.
- The pump is operating in the range.
- That the alignment is correct.
- The voltage is correct.
- The amperage of the plate is not exceeded.
- There is no foreign material that may force
the impeller.
- That the motor is suitable for the pump.
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