SystemAir KA HSI-2-2-S-R-50F-TB2-L2 User Manual

systemair 53
Maintenance
In order to ensure smooth performance of heat exchangers, the following operations should be carried out regularly:
• Checkthatthesteamandwaterconnectionsareleakage-freeandthatairjointsarermlymountedandleakage-
free.
• Checktheventingfanoperation.Intheeventofdisturbancesinthemediumowthroughtheheatexchangeror
the formation of air cushions, vent the piping system.
• Checktheoperationoftheheatexchangerautomaticanti-frostprotection.
• Periodicallychecktheoperationoftheautomaticshut-offofthesupplyofsteamintotheheatexchangerwiththe
unit stopped.
• Checkthecontinuedoperationofthefan(for3to5min)aftertheunitisstoppedtoprotecttheelectricmotor
against overheating.
• Regularlychecktheheatingcoilbladesfordustbuild-up.Dustorscalebuild-uponbladesreducestheheat
exchanger capacity. Clean the blades at regular time intervals – approx. every 500 hours of operation. To clean the
blades,blowthemwithcompressedairinthedirectionoppositetotheairowdirection.Ifsuchcleaningproves
insufcient,disconnecttheheatingcoil,slideitoutandwashwithlow-pressurewaterorsteam.Donotusehigh-
pressure water or steam in order to avoid deforming the aluminium blades. If washing with water, the pressure
thereof must not exceed 15 bar and the jet must be directed strictly perpendicular to the blades. Exposure to a
water jet at an angle will damage the blades. This applies even more so to the blades at the edge, since these are
even more fragile. Under no circumstances should you attempt to clean with a hard object.
• Periodicallychecktheproperoperationoftheautomaticcondensatedischargepot.
• Regularly clean the condensate discharge lines.
3.7.7 Electric air heater
Caution
See also section 3.1 General instructions.
The connection of the electric air heater must be carried out
byaqualiedprofessionalinaccordancewiththeapplicable
regulations.
Connection, commissioning and maintenance to be carried out
according to the manufacturer‘s instructions.
Connection
• Any functional section containing temperature-sensitive materials should be separated from the electric air heater
section by an empty section at least 300 mm in length.
• Theairvelocitythroughtheelectricairheatermustnotbelessthan1,5m/s;theairinowmustbeevenlydistributed
across the entire cross section.
• The maximum operating air temperature is 50 °C.
• Connection terminals in the electric air heater connection box are accessible from the section service side.
• Leadtheelectriccablesintotheconnectionboxthroughthecableglandsandmakesurethecablerundoesnot
obstruct the servicing of the adjacent functional sections.
• The electric heating elements are connected to the mains voltage of 3 x 230 V or 3 x 400 V, and achieve surface
temperatures depending on air velocity from 200 up to 500 °C during operation.
• Anairhandlingunitthatincludesanelectricairheatersectionmustbettedwithanairowcontrolfunction.
• Theelectricairheatermayonlybeswitchedonafterthefanhasstartedandbuiltupanadequateairow.
• After the electric air heater has been switched off, the fan must continue to run for 3 to 5 minutes to cool down the
electric heating elements.
• The safety temperature limiter and safety thermostat sensors must always be installed in the upper part of the
electric air heater section – above the electric heating elements, where the temperature reaches the highest levels in
theeventofairowinterruption.
• The electric air heater is not waterproof, therefore, the electric air heater section must not be installed in a location
exposed to water or water steam.

SystemAir KA HSI-2-2-S-R-50F-TB2-L2 Specifications

General

Brand	SystemAir
Model	KA HSI-2-2-S-R-50F-TB2-L2
Category	Fan
Language	English