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Maintenance of VISCOTHERM drives
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Periodic checks
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Cooling
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Works revision of pump unit ROTODIFF
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General Maintenance for ROTODIFF's
Cooling
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Recommended working hydraulic oil temperature: 40 - 45 °C. |
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Where input cooling water temperature is over 20 °C, consult
VISCOTHERM. |
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Compare inlet and outlet water temperatures of
recommended working oil temperature can not be maintained. In
this case cooler cleaning might be necessary. |
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If the pump unit is exposed to ambient temperatures below
0 °C ensure that the cooling water does not freeze (empty
cooler or add anti-freeze, ensure continuous circulation). |
Cooler cleaning:
With hard cooling water:
Flush with 5% diluted formic acid. (Caution: after cleaning
the cooler with diluted formic acid flush cooler thoroughly).
With water contaminated with organic substances:
Flush with clean water or if the contamination is persistent
use steam. (Cleaning flush always serval times in the opposite direction
of the normal cooling water flow direction thoroughly).
Caution:
The level- and temperature switch (see our service information
SI-11) exists for emergency situations only. Pump units and ROTODIFF's
witch run above the maximum recommended temperature due to inefficient
cooling will experience high rate of wear, and therefore a short
life-time.
In the case of very dusty, humid or high ambient temperatures in
the operational area, it is advisable to shorten the service interval.
VISCOTHERM will advise.
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These are general maintenance advises, various
pump units have additional maintenance instructions.
Please consult the corresponding maintenance manual.
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