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Frost protection measures
When unit is switched off: Drain all water-lled sections, blow out remaining water with
compressed air!
Steam heating coils being directly operated with fresh air have to be provided with
steam on total height.
Maintenance
Attention: Do not clean electric heaters with water!
For cleaning the heat exchanger from dust and dirt use vacuum cleaner or compressed
air. For higher dirt accumulation use additionally commercial washing agents and luke
warm water or compressed steam (not over 5 bar).
Pull out the lter element on the access side to clean or to renew it.
The lter element can be cleaned with the help of compressed air, batting or vacuum
cleaner.
All the remaining parts as motor, fan-impeller, mixing-box, adjustable ns and actuator
are maintenance-free.
Prior to nishing maintenance, check safe fastening of the LH-unit.
Before operation and after a longer rest period the pump has to be vented. For this
purpose, the LH-unit has to be switched off. To proceed accordingly, remove plug acc.
to sketch. When water is evacuated the plug is closed tightly again.
The direction of rotation of the pump is marked with arrows on the type-plate.
Pumps operating with AC always turn into the correct direction of rotation.
Pumps operating with three-phase current have to be checked by removing the plug
(threaded to the right) and by controlling the rotation of the shaft.
Pump
Maintenance / Frost Protection Measures
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