Astralpool A144C3 Kullanıcı El Kitabı - Sayfa 13

Su Pompası Astralpool A144C3 için çevrimiçi göz atın veya pdf Kullanıcı El Kitabı indirin. Astralpool A144C3 16 sayfaları. Self-priming commercial centrifugal pumps with trap for swimming pool use

Sayfayı Yazdır
SYMPTOM
PUMP RUNS, BUT NO
WATER DELIVERED
NOT ENOUGH WATER DELIVERED
NOT ENOUGH PRESSURE
EXCESSIVE VIBRATION
ABNORMAL NOISE
PUMP STOPS
OVERHEATING
CAUSE
_________________________________________________________________________________________________________________________________
I. ELECTRICAL
_________________________________________________________________________________________________________________________________
A. NO VOLTAGE IN POWER SYSTEM
_________________________________________________________________________________________________________________________________
B. NO VOLTAGE ON ONE PHASE
(THREE PHASE UNITS)
_________________________________________________________________________________________________________________________________
C. LOW VOLTAGE AT MOTOR
_________________________________________________________________________________________________________________________________
D. MOTOR LEADS IMPROPERLY GROUPED
FOR VOLTAGE
_________________________________________________________________________________________________________________________________
E. CONTROL FAILURE
_________________________________________________________________________________________________________________________________
F. THERMAL OVERLOAD SWITCH OPEN
_________________________________________________________________________________________________________________________________
G. INSULATION FAILURE
_________________________________________________________________________________________________________________________________
H. OPEN WINDINGS
_________________________________________________________________________________________________________________________________
I. FREQUENCY VARIATION
_________________________________________________________________________________________________________________________________
J. WRONG DIRECTION OF ROTATION
_________________________________________________________________________________________________________________________________
2. MECHANICAL
_________________________________________________________________________________________________________________________________
A. FLOW THROUGH PUMP COMPLETELY OR
PARTIALLY OBSTRUCTED
_________________________________________________________________________________________________________________________________
B. PUMP NOT PRIMED
_________________________________________________________________________________________________________________________________
C. INTERNAL LEAKAGE
_________________________________________________________________________________________________________________________________
D. LOOSE PARTS
_________________________________________________________________________________________________________________________________
3. SYSTEM
_________________________________________________________________________________________________________________________________
A. PRESSURE REQUIRED BY SYSTEM AT DESIGN
FLOW RATE EXCEEDS PRESSURE RATING OF
PUMP
_________________________________________________________________________________________________________________________________
B. OBSTRUCTION IN SUCTION PIPING
_________________________________________________________________________________________________________________________________
C. PRESSURE RATING OF PUMP EXCEEDS
PRESSURE REQUIREMENT OF SYSTEM AT
DESIGN FLOW RATE
_________________________________________________________________________________________________________________________________
D. SUCTION LIFT EXCEEDS 10' DESIGN
MAXIMUM.
TROUBLE SHOOTING
GROUP 1
ELECTRICAL
A
B
C
D
E
F
• •
• •
• • • • • • • •
• • •
CORRECTIVE ACTION
Check phase-to-phase on line side of starter contactor.
Check circuit breaker or fuses.
Check phase voltage on line side of starter contactor. Isolate open
circuit (circuit breaker, fuse, broken connections, etc.)
Running voltage across each leg of motor must be ± 10% of nominal
voltage shown on nameplate.
Refer to lead grouping diagram on motor nameplate.
Check control device, starter contactor, H-O-A selector switch, etc.,
for malfunction.
Check for drag or other overload.
Check motor or windings to ground with megohmmeter.
Check leg-to-leg with ohmmeter.
Check frequency of power system. Must be less than 5% variation from
motor nameplate rating.
Reverse rotation of three phase motor by interchanging any two leads.
See Manufacturer's Instructions for reversing single phase motor.
Locate and remove obstruction. Refer to Repair Instructions
for disassembly.
Reprime. Inspect suction system for air leaks.
Check impeller for wear of controlled clearances. (See Repair Instructions.)
Inspect, repair.
Compare pump pressure and flow rate against pump characteristic curve.
Check for closed or partially closed valve in discharge piping system.
Reduce system pressure requirement. Increase pressure capability of pump.
Locate and remove obstruction.
Compare pump pressure and flow rate against pump characteristic curve.
Inspect discharge piping system for breaks, leaks, open by-pass valves, etc.
If necessary, reduce flow rate by partially closing discharge valve.
Locate pump closer (vertically) to water source.
13
PROBABLE CAUSE
GROUP 2
MECHANICAL
G
H
I
J
A
B
• •
• • •
• • •
• • •
• • •
• •
GROUP 3
SYSTEM
C
D
A
B
C
D
• •
•
•
• •
•
• •
•
• •
•
• •
• •
•