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Summary of Contents for Munters NA Series
- Page 1 Original instructions Operating manual NA series Air handling unit TEN-AHU-C1303 © Munters Europe AB 2013...
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Page 3: Table Of Contents
Table of contents Table of contents ......4.1.6 Stopping water flow to the Introduction ....... .. coils .. -
Page 4: Introduction
This manual does not describe in full all the maintenance work required to guarantee the longevity and reliability of this type of equipment. Always contact Munters for service and repairs, to ensure safe and long lasting operation of the unit. -
Page 5: Warranty
1.4 Warranty The warranty is based on the terms of sale and delivery of Munters. The warranty is not valid if repairs or modifications are carried out without the written agreement of Munters, or if the unit does not operate under the conditions agreed with Munters. -
Page 6: Safety
Safety 2.1 Intended use The unit delivered by Munters must only be used for the treatment of air. This includes filtering, heating, cooling, humidifying, dehumidifying and transporting air. Munters explicitly rules out any other use. The unit is designed to meet the safety requirements, directives and standards listed in the EC Declaration of Conformity. -
Page 7: Electrical Hazard
NA series AHU 2.2.1 Electrical hazard Figure 2.1 Electrical hazard Figure 2.2 Secure against reconnection WARNING! Installation, adjustments, maintenance and repairs must only be carried out by qualified personnel who are aware of the risks involved when working with equipment operating with high electrical voltage and high machine temperatures. -
Page 8: Physical Hazard
NA series AHU 2.2.2 Physical hazard WARNING! Rotating hazard. The unit contains rotating fans and other moving parts. To prevent personal injury, the unit must be run with all panel doors closed and all removable panels and protective grids properly in place. Never open the doors or panels before all fans and other moving parts have come to a complete stop, and the main power is switched off. -
Page 9: Property Hazard
NA series AHU 2.2.3 Property hazard CAUTION! The unit is not intended for use in classified areas, nor for treating air polluted with solvents, dust or other aggressive, corrosive or abrasive particles. CAUTION! Failure to correctly adjust the air flows can cause malfunction of the unit. -
Page 10: Residual Risks
NA series AHU 2.3 Residual risks In order to avoid the possible dangers in operating or maintaining the unit, necessary protections have been foreseen. However, there are still some residual risks that all personnel working with the unit must be aware The handling of fluids in refrigerating, heating or cooling circuits can be dangerous. -
Page 11: Warning Signs
NA series AHU 2.4 Warning signs The following warning signs can be present on the unit, to warn the users of residual risks which can cause serious injury or death. Please make sure that all personnel working with or near the unit are aware of the meaning of each sign. -
Page 12: System Design And Function
NA series AHU System design and function 3.1 System design The NA2000 series is an AHU (Air Handling Unit) system which can be configured with many different functions such as mixing, filtering, heating, cooling and humidifying of air. Figure 3.1 is only one example. -
Page 13: Main Components Description
NA series AHU Main components description NOTE! Some components are optional, and individual system specifications may differ. All component pictures are examples, and may not correspond to individual units. 4.1 Water coils 4.1.1 Cooling coils Cooling can be supplied by optional cold water coils installed in the pre- and or post-treatment sections. -
Page 14: Cleaning
NA series AHU A cooling section can be equipped with a droplet separator to remove droplet carry-over from the cooling coil. The droplet separator is built from a patented three-plane-fluted pad that is set at an angle to the flow of air. -
Page 15: Evaporative Coolers/Humidifiers
NA series AHU 4.2 Evaporative coolers/humidifiers Evaporative coolers/humidifiers are used as needed to achieve the process air quality specification. They can have either a direct water supply, or a recirculated system. The heart of the FA6 cooler/humidifier is a cassette made from inorganic evaporative media – GLASdek®. - Page 16 7. Check that the hoses and couplings do not leak. 8. Check the discharge pipe and water trap. Clean if necessary. NOTE! For more information on servicing of evaporative coolers/humidifiers, see the separate Munters FA6 manual. Main components description TEN-AHU-C1303...
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Page 17: Fans
NA series AHU 4.3 Fans 4.3.1 Fan types Figure 4.3 Plug fan Figure 4.4 Scroll fan The unit can be equipped with plug fans or scroll fans. The fans are driven by electric motors that can be controlled by frequency converters, which enable adjustment of the air pressure and air flow from the operator panel. -
Page 18: Maintenance Of The Belts
NA series AHU Figure 1 - tension of the belts Figure 4.5 Tension of the belts 4.3.4 Maintenance of the belts Clean the belts and pulleys with a dry cloth. Oil, lubricant and dust must be removed from the belts. The use of a belt lubricant is not recommended. -
Page 19: Filters
NA series AHU 4.4 Filters 4.4.1 Filter types Figure 4.7 Bag filter Figure 4.8 Panel filters 4.4.2 Filter maintenance WARNING! There is a fire hazard, or risk of unit malfunction, if filters are maintained insufficiently or incorrectly. WARNING! When replacing the filters or working in a dusty area: To protect the user from dust, wear a suitable CE marked face mask selected and fitted in accordance with the applicable safety standards. -
Page 20: Dampers
Keep hands clear of the dampers when they are moving. Risk of personal injury. Openings with dampers should always be covered by ducts. Any unducted air dampers should be fitted with a protective grille (not included in Munters delivery) to prevent injury from the damper blade movement. -
Page 21: Flexible Connections
NA series AHU 4.6 Flexible connections Figure 4.10 Flexible duct connection Flexible duct connections are used in order to avoid any transmission of structure borne noise and vibrations. The length in operation is normally 120 mm (fully extended 200 mm). -
Page 22: Commissioning
NA series AHU Commissioning CAUTION! Commissioning and initial start-up of the unit should be carried out by Munters personnel only. 5.1 Checks before starting up Check that the fan motor transportation blocks are removed. It is always possible that during transport certain elements work loose due to vibrations. We advise you to check thoroughly that all screws and nuts, and in particular rotating parts such as turbines, pulleys, bearings, etc., are tight. -
Page 23: Starting Up
NA series AHU Figure 5.1 Checking the direction of rotation The items below concern recirculated systems: 5. Start the pump and check the direction of rotation by touching the rubber ring with a screwdriver. Viewed from above, the motor should rotate clockwise. If it rotates in the wrong direction, switch two of the phases. -
Page 24: Service And Maintenance
NA series AHU Service and maintenance 6.1 Safety Figure 6.1 Electrical hazard Figure 6.2 Secure against reconnection Electrical hazard WARNING! Installation, adjustments, maintenance and repairs must only be carried out by qualified personnel who are aware of the risks involved when working with equipment operating with high electrical voltage and high machine temperatures. - Page 25 NA series AHU Physical hazard WARNING! Remove hand wheels from water and steam supply valves, or otherwise lock off reopening on a component that is isolated to prevent inadvertent reopening. Alternatively, place a notice on the valve indicating that it is closed for a reason.
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Page 26: General
Munters products. All test equipment used by our personnel to ensure proper system balancing is certified for accuracy. Munters Service can offer a service plan adapted to suit the conditions of a specific installation. See contact addresses on the back page of this manual. -
Page 27: Service And Maintenance Schedule
NA series AHU 6.5 Service and maintenance schedule Service level Start Service work Operating time in hours 4000 8000 12000 16000 20000 24000 Calendar time in months Filter inspection, replace filter if necessary, function check Preventive inspection including safety check... - Page 28 NA series AHU Service level Service work Operating time in hours 28000 32000 36000 40000 44000 48000 Calendar time in months Filter inspection, replace filter if necessary, function check Preventive inspection including safety check Inspection and leakage check of system boxes and doors, adjust hinges...
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Page 29: Supplements
NA series AHU Supplements Additional information is available in supplements as applicable: Product specification data sheet ■ Control system ■ DX refrigeration ■ Installation ■ Steam heating ■ Humidification ■ Supplements TEN-AHU-C1303... - Page 32 Web: www.munters.at Web: http://www.munters.ch BELGIUM FRANCE POLAND UNITED KINGDOM Munters Belgium S.A. Munters France SAS Munters Sp. z o.o. Munters Ltd Air Treatment Air Treatment Oddzial w Polsce Air Treatment Rue du Progrès, 5 4821 106, Boulevard Héloise Air Treatment Pathfinder Place 10 Ramsay Court...
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