Demolition; Technical Documentation Supplied - EBARA EVM3 Manuel D'utilisation Et D'entretien

TROUBLE
ENCOUNTERED
When the switch
closes, the pump Motor
does not manage short-circuited
to complete
even one turn or
struggles to turn
the odd half turn Short-circuit
before the circuit
due to incor-
breaker trips or
rect connec-
GB
fuses blow tion
Leakage
current owing
Residual current to damaged
circuit breaker insulation of
trips as soon as motor, cables
switch closes or other
electric com-
ponents
Foot valve
Pump performs
leaking
a few turns in op-
posite direction
Suction pipe
when stopping
leaking
Motor bearin-
gs worn
Foreign matter
between fi xed
and rotating
parts
Pump vibrates
and is unusually
noisy
Pump opera-
tion affected
by cavitation

11. DEMOLITION

See sect. 11 in part 1 of the manual.
12. TECHNICAL DOCUMENTATION SUPPLIED (DIAGRAMS,
TABLES, DRAWINGS, TECHNICAL NOTES)
12.1. MOTOR OUTPUT REDUCTION FACTORS
When the motor-driven pump is installed in a site where
the ambient temperature is higher than 40°C and/or its al-
titude is over 1000 m above sea level, the motor's output
decreases.
The table attached features the reduction factors based
on temperature and altitude. To prevent overheating, you
must replace the motor with a different version whose rated
output multiplied by the factor corresponding to the tem-
perature and altitude is greater than or equal to that of the
standard motor.
The standard motor can only be used if the relevant applica-
tion can accept a reduction in fl ow rate, achieved by throt-
tling the delivery line so as to reduce the current absorbed
by an amount equal to the correction factor.
12
CAUSE REMEDY
Check and
replace
Check and
reconnect
Call a
correctly
specialized
electrician
Check and re-
place electric
component
with ground
fault
Check, clean or replace
Check and repair
Replace bearings
Call our nea-
Disassemble
rest Servicing
and clean
Department
pump
to do the job
Reduce fl ow rate by throttling
delivery line. If cavitation persi-
sts, check:
- Suction height
- Pressure loss along suction
line (diameter of pipe, elbows
etc.)
- Liquid temperature
- Delivery line backpressure
Temperature °C
Altitude
(m)
0 10 20 30
0
500
1000
1500 0.97 0.97 0.97 0.97 0.97 0.92 0.87 0.82 0.78
2000 0.95 0.95 0.95 0.95 0.95 0.90 0.85 0.80 0.76
12.2. POSITIONING OF HOLES FOR FASTENING DOWN
Hole Hole centre-to-centre
Pump
diameter distance side in line
model
mm
EVM3
EVM5
12
EVM10
EVM18
EVM32
EVM45 14
EVM64
12.3. EVM PUMP MAXIMUM WORKING PRESSURE CHART
Maximum
EVM3
working
pressure
50 60 50
1.6
2-15 2-9 2-16 2-10 2-14
2.5
18-26 11-18 18-24 11-19 15-22 10-16 7-16 7-12
Maximum
EVM32
working
pressure
50 60
1.6
1-7 1-5
2.5
8-12 6-8
3.0
12-14 8-10
12.4. MOTOR-DRIVEN PUMP ID CODE
EVM 10 2 N 5 1,5w
40 45 50 55
0.95 0.90 0.85 0.80
0.95 0.90 0.85 0.80
0.95 0.90 0.85 0.80
Hole centre-to-centre
distance side
with ports crosswise to ports
mm mm
100 180
130 215
170 240
190 266
Pump model
EVM5 EVM10 EVM18
Hz
60 50 60 50
2-8 2-6
Pump model
EVM45 EVM64
Hz
50 60 50 60
1-6 1-4 1-6 1-4
7-9 5-6 6-7
10 – –
Motor output in kW
5=50Hz / 6=60 Hz
N = Oval fl anges, Round fl anges
Number of impellers (from 2 to 26)
Flow rate m /h at max. effi ciency
3
(3, 5, 10, 18, 32, 45, 64)
Type of pump
EVM = standard version AISI304
EVML = AISI316 version,
EVMG = cast iron version,
EVMW = WRAS version
60
60
1-6
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