Maintenance Tasks; Draining And Cleaning - Wilo Atmos TERA-SCH Serie Einbau- Und Betriebsanleitung

9.3

Maintenance tasks

9.4

Draining and cleaning

Installation and operating instructions Wilo-Atmos TERA-SCH
Maintenance/repair
worn. The gasket must be replaced. The service life of a mechanical seal greatly de-
pends on the operating conditions (temperature, pressure, fluid properties).
ƒ
Wilo recommends checking the flexible coupling elements regularly and replacing
them at the first sign of wear.
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Wilo recommends briefly putting the standby pumps into operation at least once a
week to ensure they are always ready for operation.
Atmos TERA-SCH pumps require little routine maintenance. However, regular observa-
tion and analysis of various working parameters avoids serious troubles.
Keep daily logbook records of working parameters like suction and discharge pressure,
flow rate. It is recommended to record parameters twice a shift. Any sudden change
should be a signal for investigation.
Some of the routine maintenance checks for this purpose are as under:
Parts Action
Check for leakage
Mechanical Seal
Check for leakage
Gland Packing
Check for leakage
Gland Packing
Check temperature
Bearings
Check pressure
Suction Pressure
Check pressure
Discharge Pressure
Check for leakage
Flushing
Check vibration
Vibration
Check for the rated
Voltage and current
values
Check for wear
Rotating element
Check the clear-
ances between
Clearances
wear ring and im-
peller
Check on suction
Total Dynamic Head
and discharge
Check the align-
Alignment ment of pump with
motor
Table 12: Routine maintenance checks
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The rolling bearings of the motors are to be maintained according to the installation
and operating instructions of the motor manufacturer.
WARNING
Risk of injury and damage to property!
• Dispose off the pump contents and rinsing fluid by taking the legal regulations
into account.
• Always wear protective clothing, protective gloves and protective goggles when
working.
Period Remarks
Daily
Daily 10–120 drops/min
are normal
Half yearly If necessary replace
with new packings
Weekly Bearings are
greased for life and
are maintenance
free
Daily
Daily
Weekly Flow through the
Flushing pipes must
be clear and con-
tinuous
Weekly
Weekly
Yearly
Yearly If value of clearance
has increased, wear
ring should be re-
placed
Yearly
Half yearly For reference use
pump motor GA
Drawing
en
33