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KJM MANDÍK Installation, Commissioning, Maintenance
sufficient quantity of water. Quick and complete drainage shall be watched and
documented. This ensures initial filling of the drain traps with sealing water.
• during lifting operations, sealing joints in the unit casing are subject to mechanical
stresses. They shall be checked for tightness.
• it is recommended to equip the system with new, clean air filters after
commissioning and prior to handing the system over to the customer
4 OPERATION AND MAINTENANCE
First, all commissioning instructions according to the general AHU installation manual
must be observed!
AHU shall be operated in such a manner to avoid microbial growth on surfaces of air-
handling components, especially air filters, and on surfaces which are wet for technical
reasons. Access to the system components for periodic maintenance shall be ensured!
• in case of short standstills of AHU, as, e.g., when switched off during night times or
for maintenance purposes, the installed dampers (outdoor air, exhaust air and, as
the case may be, supply air) shall close automatically to prevent air from flowing
through the system due to wind or buoyant forces
• additionally, in case of extended standstills of AHU (more than two days), it has
to be ensured that any wet surfaces shall be blown dry! (inner casings, coolers,
evaporators, recovery heat exchangers, condensate tray, humidifiers, ...)
The respective switching commands required for automatic dry-blowing shall be
entered in the building automation system.
•
The AHU must be regularly inspected at short intervals by trained specialist
personnel to ensure that the hygienic requirements for operation and
maintenance are observed at all times! Hygienic inspections beyond standard
procedures (general installation manual AHU MANDÍK) are summarized in the
following table:
IZU 1.0 01/2021
MANDÍK, a.s., www.mandik.cz
R
7
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