© STULZ Tecnivel – all rights reserved
EN/02.2021 Technical data subject to modifications
23
Activity
Action, if requiered
Maintenance Interval
COILS
Check for contamination, damage and
corrosion.
Clean / repair.
6 months
Check Drip tray (cooling and evaporator
coils).
Clean.
6 months
Check water inlet/outlet (water coils).
Clean.
6 months
Check Siphon function and water level of
siphon (Cooling and evaporator coils).
Clean / refill.
6 months
Check flow control valves (water coils).
Clean / repair / replace.
6 months
FANS
Check Blades and housing for contamina-
tion, damage and corrosion.
Clean / replace.
6 months
Check impeller for wear/deposits/corro-
sion and damage.
Clean / replace.
6 months
Check bearings for noise.
Replace.
6 months
Vibration test.
Clean/rebalance impeller/replace.
Recommended every 6 months
or in case of abnormal noise.
For more information, consult the specific fan manual, available on request
UNIT HOUSING
Check for contamination, damage and
corrosion.
Clean and repair
12 months
Check for water formation (condensation,
leaks).
Clean and determination of cause.
12 months
Check function of drains.
Clean.
12 months
Check flexible connections for leaks.
12 months
ELECTRICS
Retighten electrical connections.
12 months
6.3
Air filters
Filters are equipped with a pressure switch. When the maximum allowed differential pressure across
the filter is exceeded because of clogging, filters must be replaced.
Procedure for filters replacement
• Open the access panel to the fi lters.
• Loose the fixing screw on the filter holding parts (on lower and upper part of the filters)
• Pull the holding part to release the filters
• Remove the old filters and replace them by new ones (put a flat gasket between each filter)
• Push the holding parts back to closed position and tighten the fixing screw to secure them.
