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Maintenance instructions 

M-WRG-II P... / M-WRG-II E ventilation units

Meltem Wärmerückgewinnung GmbH & Co. KG

Am Hartholz 4 · D-82239 Alling

[email protected] · www.meltem.com

VENTILATION  THE  RIGHT WAY

V E N T I L A T I O N   &   H E A T   R E C O V E R Y

9.8 

Insert heat exchanger

 

► Apply a thin film of Vaseline to the sealing lips (item 1 in Fig. 25) of the 6 sealing 

profiles (item 4 in Fig. 24 on page 24).

 

►

Re-insert the heat exchanger (item 2 in Fig. 25) into the housing.

 

►

Carefully push the heat exchanger in as far as it will go. Note the following points:

 

— Do not tilt the heat exchanger as you push it in.

 

—

The sealing lips of the sealing profiles must point outwards (see arrows in Fig. 25).

Fig. 25:  Insert heat exchanger

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1

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Summary of Contents for M-WRG-II E Series

Page 1: ...m www meltem com VENTILATION THE RIGHT WAY V E N T I L A T I O N H E A T R E C O V E R Y MAINTENANCE INSTRUCTIONS HOME VENTILATION WITH HEAT RECOVERY Ventilation units M WRG II P M WRG II E Maintenance by the user Maintenance by a specialist company Part no 744015EN Week 52 2020 EN ...

Page 2: ...ng filters 8 5 1 4 Important notes on the filter change 9 5 2 Cleaning the ventilation unit 9 6 Maintenance schedules 10 6 1 Device number 10 6 2 Maintenance schedule A annual maintenance user 10 6 3 Maintenance schedule B maintenance every 5 years specialists only 11 7 Spare parts and equipment required 11 7 1 Maintenance schedule A annual maintenance 11 7 2 Maintenance schedule B maintenance eve...

Page 3: ...lter 18 8 12 Switch on ventilation unit and check functions 19 8 13 Attach unit cover to ventilation unit 19 8 14 Reset filter change indicator 20 8 15 Enter completed maintenance in maintenance schedule A 20 9 Maintenance schedule B carry out every 5 years specialists only 21 9 1 Switch off power to the ventilation unit 21 9 2 Remove cover from ventilation unit and clean 22 9 3 Remove extract air...

Page 4: ...s describe the maintenance of ventilation units from the M WRG II series and refer to the DIN 1946 6 standard Maintenance and cleaning significantly affect how the ventilation units work and their effectiveness Correct maintenance prevents hygiene problems preserves the building structure and has a positive effect on the ventilation unit s power consumption 1 3 Target group These maintenance instr...

Page 5: ...1 4 Nameplate with device number You will find the nameplate with the device number on the intermediate plate inside the housing see item 1 in Fig 2 1 5 Revision index Edition Manual Date 1st edition Maintenance instructions M WRG II P M WRG II E ventilation units Week 52 2020 EN 1 6 Explanation of the symbols used This symbol indicates an action to be taken This symbol indicates a list Fig 1 Name...

Page 6: ...ry CAUTION The signal word designates a hazard with a low degree of risk which if it is not avoided could result in minor or moderate injury NOTICE A note as used in this manual contains important information about the product or about a part of the manual to which particular attention should be paid 2 2 Starting and using the ventilation unit Do not start up the ventilation unit until it is fully...

Page 7: ...ion unit On the left of the ventilation unit there is a membrane touch pad with 5 buttons items 1 to 5 in Fig 3 These buttons are used to set the ventilation levels programs The 5 LEDs LEDs 1 to 5 in Fig 3 indicate the status of the ventilation unit They also display any fault messages or whether an air filter needs to be changed LED 1 lights up continu ously The mains switch item 1 in Fig 4 is lo...

Page 8: ... filter The following air filters may be used or are available for selection for the M WRG II venti lation units Part no Type Filter type Filter class Application 750010 M WRG II FA Outdoor air filter ISO ePM1 60 F7 Effectively filters out respirable particulates such as pollen soot and bacteria from dust class PM1 750020 M WRG II FK Activated charcoal filter optional for outdoor air ISO ePM2 5 55...

Page 9: ...rs every six months Always replace air filters in pairs The permeability of both air filters affects the effi ciency and power consumption of the ventilation unit Observe the filter change indicator LED 1 lights up continuously see Fig 3 on page 7 and replace the air filters as necessary NOTICE An outdoor air filter from filter class ISO ePM1 50 F7 is needed to fulfil the hygiene requirements defi...

Page 10: ...mber on the line below You will find the device number on the nameplate see item 1 in Fig 2 on page 5 Device number ____________________ 6 2 Maintenance schedule A annual maintenance user Date Component Activity Unit cover Clean Filter cover Filter ring Outdoor air pipe Filter base Air grilles duct adapters Intermediate plate Heat exchanger Visual inspection Outdoor air filter Replace Extract air ...

Page 11: ...e B maintenance every 5 years 7 Spare parts and equipment required 7 1 Maintenance schedule A annual maintenance 2x replacement filters see section 5 1 2 on page 8 Lint free cloth for cleaning the surfaces of the ventilation unit Lint free cloth for covering the heat exchanger Mild soapy water Vacuum cleaner with attachment for scratch prone surfaces e g brush attachment with natural hair bristles...

Page 12: ...ion unit The unit cover item 2 in Fig 5 will come away At the same time push your index fingers into the gap between the unit cover and housing and lift the unit cover up and away from the housing Clean the unit cover on all sides with a damp cloth and mild soapy water 8 3 Remove extract air filter clean filter ring Turn the filter ring item 1 in Fig 6 using the hand grip item 2 in Fig 6 anti cloc...

Page 13: ... out of the ventilation unit Detach the outdoor air filter from the filter cover Clean the filter cover with a damp cloth and mild soapy water Dispose of the used air filter in the non recyclable waste or as required by your country s disposal regula tions 8 5 Check outdoor air pipe for soiling and clean if necessary Check the outdoor air pipe item 1 in Fig 8 for soiling Clean the outdoor air pipe...

Page 14: ...vacuum cleaner see section 7 1 on page 11 NOTICE When cleaning be careful not to damage the optional humidity sensor item 3 in Fig 9 or optional CO2 sensor item 4 in Fig 9 8 7 Clean air grilles or duct adapters 8 7 1 Clean air grilles for surface mount or flush mount ventilation units without ductwork connection Clean the air grilles item 1 in Fig 10 with a damp cloth and mild soapy water You can ...

Page 15: ...cleaning 8 7 3 Clean duct adapters for flush mount ventilation units with ductwork connection Clean the extract air and supply air openings item 1 in Fig 12 on the duct adapter with a damp cloth and mild soapy water 8 7 4 Clean duct adapters for U2 integrated into wall ventilation units Clean the duct adapters item 1 in Fig 13 with a damp cloth and mild soapy water You can take out the duct adapte...

Page 16: ... item 1 in Fig 15 for soiling Use a soft brush attachment on the vacuum cleaner to clean the heat exchanger NOTICE If significant soiling of the heat ex changer is identified during the annual visual inspection the ventilation unit must be opened and cleaned by a specialist see section 9 Maintenance schedule B carry out every 5 years specialists only on page 21 Con tact Meltem or an authorised spe...

Page 17: ...ate plate item 4 in Fig 16 Turn the filter ring clockwise until the arrow on the filter ring item 5 in Fig 16 lines up with the arrow for the locking position item 6 in Fig 16 Make sure that the 4 tabs item 7 in Fig 16 on the filter ring engage in the retainers item 8 in Fig 16 on the intermediate plate Check the position of the filter ring The hand grip must be vertical and the arrow on the filte...

Page 18: ...he filter cover clockwise until the arrow on the filter cover item 5 in Fig 17 lines up with the arrow for the locking position item 6 in Fig 17 Make sure that the 3 tabs item 7 in Fig 17 on the filter cover engage in the retainers item 8 in Fig 17 on the intermediate plate Check the position of the filter cover The hand grip must be vertical and the arrow on the filter cover must line up with the...

Page 19: ...tion unit is switched on off Check the functions of the extract air and supply air fans There must be a perceptible air flow at the extract air filter item 2 in Fig 18 and supply air opening item 3 in Fig 18 8 13 Attach unit cover to ventilation unit Hold the cover item 1 in Fig 19 of the ventilation unit with both hands and tilt the top edge of the cover towards the ventilation unit Insert the ta...

Page 20: ...tor must be reset in order to restart monitoring of the period since the last air filter change The procedure is as follows Press button 1 item 1 in Fig 3 on page 7 for roughly 5 seconds The ventilation unit will beep three times as confirmation Monitoring of the period since the last air filter change is now restarted 8 15 Enter completed maintenance in maintenance schedule A Enter the date on wh...

Page 21: ... with the following qualifications Training and knowledge of how to inspect clean and maintain ventilation units Training in the installation and commissioning of electrical devices Training in electrical hazards and the local safety requirements Knowledge of the relevant standards and directives Knowledge and observance of this document and all the safety instructions 9 1 Switch off power to the ...

Page 22: ... the housing Clean the unit cover on all sides with a damp cloth and mild soapy water 9 3 Remove extract air filter Turn the filter ring item 1 in Fig 21 using the hand grip item 2 in Fig 21 anti clockwise until the filter ring is released from the retainers Pull the filter ring together with the extract air filter item 3 in Fig 21 out of the ventilation unit 9 4 Remove outdoor air filter Turn the...

Page 23: ...s volt age free Earth and short circuit Cover or block off access to adjacent live parts Use the TX10 screwdriver to loosen the Torx screw item 1 in Fig 23 on the upper electronics compartment cover item 2 in Fig 23 Then remove the plate Use the TX10 screwdriver to loosen the Torx screw item 3 in Fig 23 on the lower electronics compartment cover item 4 in Fig 23 NOTICE Remove the lower electronics...

Page 24: ... inal positions Be careful to insert the narrow end of the sealing profile see Fig 24 first into the retainer 9 7 Clean heat exchanger The container used to clean the heat exchanger should be as large as possible e g a bathtub Place a large soft cloth on the bottom of the container to avoid damaging the heat exchanger or container Place the heat exchanger on the cloth Clean the heat exchanger If t...

Page 25: ... heat exchanger Apply a thin film of Vaseline to the sealing lips item 1 in Fig 25 of the 6 sealing profiles item 4 in Fig 24 on page 24 Re insert the heat exchanger item 2 in Fig 25 into the housing Carefully push the heat exchanger in as far as it will go Note the following points Do not tilt the heat exchanger as you push it in The sealing lips of the sealing profiles must point outwards see ar...

Page 26: ...e item 1 in Fig 26 to the ventilation unit Guide the lower electronics compart ment cover item 2 in Fig 26 through the opening in the intermediate plate Attach the intermediate plate to the ventilation unit Use the 13 TX20 Torx screws item 3 in Fig 26 to fix the intermediate plate Use the TX10 Torx screw to fix the lower electronics compartment cover item 2 in Fig 26 Use the TX10 Torx screw to fix...

Page 27: ...ite at https www meltem com service wartung reinigung or using the QR code on this page U2 cover M WRG II U2 AD WS M WRG FR TVZ supply air valve M WRG FR TVA extract air valve Ceiling box M WRG DK 2x75 100 M WRG DK 2x63 100 Flexible pipe 2x75 mm 2x63 mm Fig 27 Flexible pipe system 9 11 Insert air filters carry out function test and attach unit cover Insert the new extract air filter see section 8 ...

Page 28: ...ces so we cannot guarantee complete accuracy The information in this publication is regularly checked and any necessary corrections are made in subsequent editions Copyright Meltem Wärmerückgewinnung GmbH Co KG We reserve the right to make changes Meltem Wärmerückgewinnung GmbH Co KG Am Hartholz 4 D 82239 Alling Germany Tel 49 8141 404179 0 Fax 49 8141 404179 9 Internet www meltem com Email info m...

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