Maintenance And Service - EBARA FSA Instruction Manual

Maintenance and Service

Disconnect power cable from power source before servicing unit.
Normal maintenance should be done by qualified personnel.
Check pressure, output, voltage, current, vibration, and other specifications. Unusual readings may indicate a
problem
requiring immediate service. Contact your local EBARA INDONESIA representative as soon as possible.
Ensure that pump operation switch is off
before making inspections; the pump may
suddenly start if it is automatic operation type.
1. Daily inspection
(1 ) Pressure or current variations, abnormal
vibration or noise are signs of malfunction.
Refer to
necessary repairs as soon as possible. We
recommend that you keep a record of daily
operating conditions so that you will be able
to detect early signs of trouble.
(2) The maximum allowable bearing operating
temperature should not exceed 80° C.
(3) There should be no leakage if shaft sealing
mechanical seal is normal. Replace entire
seal if there is leakage. Gland packing
leakage should be kept down to a steady
drip or trickle (approx. 20 ml/min.) Do not
tighten excessively or unevenly, or when
pump is stopped.
(4) Fig. 4 indicates the normal level of vibration
when installation and piping are correct.
Excessive vibration may be due to conditions
such as *15 (incorrect centering.) defective
piping or loose foundation bolts. Inspect
carefully.
In the event that special vibration control
measures are necessary, EBARA has the
following available
EBARA vibration absorber) the EBARA Flex
(a flexible joint) and the EBARA pipe silencer
(pressure pulsation absorber).
2. Carefully observe the following points:
(1) Operating the pump for an extended period
of time with the discharge valve closed will
eventually cause pump components to be
damaged.
Care should, therefore, be taken.
(2) Too frequent starting and stopping of the
pump will eventually cause damage. Keep
pump-starting frequency to a minimum.
(3) Be sure to turn off operation switch in event
of power failure. It is dangerous to leave the
switch on as the pump
when power is restored.
Troubleshooting and
upon request:
suddenly start
will
WARNING
3. Carefully observe the following when the
pump is to be stored or remain idle for any
length of time.
make
(1) Water remaining inside an idle pump will
freeze in cold weather and cause the pump
casing to burst. Be sure to insulate pump or
drain water completely.
(2) Operate any auxiliary pumps occasionally to
maintain best usable condition.
(the
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Fig. 4