TECHNICAL AND OPERATIONAL DOCUMENTATION Natural smoke & heat exhaust ventilators with/without daily ventilation, ventilation hatches, fixed skylights and roof access hatchways MCR – PROLIGHT C, E, NG type
MCR PROLIGHT of C type
SMOKE VENT
MCR PROLIGHT of E type
VENTILATION HATCH
MCR PROLIGHT of NG type
SKYLIGHT
ACCESS HATCHWAY
Gelco Nordic ApS
HylkedamvejGda_sk 70 : DK-5591 Gelsted version 2.3.0.ENG-2008-01-29
Tel.: 45 63 46 54 08 : Fax: +45 6346 5404
w w w.gelco -nordic.dk
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
CONTENTS 1. INTRODUCTION........................................................................................................................................ 3 2. PURPOSE OF THE DEVICE..................................................................................................................... 3 3. CONSTRUCTION AND PRINCIPLE OF OPERATION OF THE DEVICE .............................................. 3 4. TRANSPORT AND DELIVERY ............................................................................................. .................... 5 5. ASSEMBLY OF THE DEVICE................................................................................................................... 5 6. METHODS OF MOUNTING AND ROOF WORK FOR HATCHES ......................................................... 9 7. DEFLECTORS AND DIRECTING NOZZLES......................................................................................... 10 8. HATCH LEAF ADJUSTMENT ............................................................................................................... .. 11 9. CONTROL ................................................................................................................................................ 10 9.1. Pneumatic control ................................................................................................................................................................11 9.2. Electrical control...................................................................................................................................................................13 9.3. Ventilation function...............................................................................................................................................................14
10. LEAF FILLING........................................................................................................................................ 15 11. MAINTENANCE OF HATCHES, ACCESS HATCHWAYS AND SKYLIGHTS ................................... 16 12. TERMS OF GUARANTEE AND SERVICE........................................................................................... 17
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
1. INTRODUCTION
The aim of this technical and operational documentation (DTR) is to acquaint the user with purpose, construction, principle of operation, correct assembly and operation of the smoke and ventilation hatches, access hatchways and skylights MCR-Prolight. The DTR contains also additional information on operating conditions, maintenance, and terms of guarantee of the product. The present technical and operational documentation concerns the hatches, skylights and access hatchways MCR-Prolight of C, E and NG type. The hatches MCR-Prolight of DVP type are described in another DTR. Observing the recommendations contained in the technical and operational documentation shall ensure correct functioning of the systems in the scope of smoke exhaust and/or venting, as well as safety of the system users.
2. PURPOSE OF THE DEVICE
Smoke hatches MCR-Prolight are automatic smoke exhaust devices. The basic function of smoke exhaust hatches MCR-Prolight is to exhaust smoke, combustion gases and heat energy from enclosed spaces (production floors, storage spaces, public facilities, etc.) to the outside of buildings, in order to protect human lives and property by: • maintaining escape routes with low smoke levels, • facilitating fire-fighting action by creating a low layer with low smoke levels, • providing protection for the building structure and outfit, • limiting fire damage caused by smoke, hot combustion gases and thermal decomposition products. Smoke hatches may also serve the function of ventilation hatches, smoke exhaust and ventilation hatches, access hatchways, or roof lighting. By using smoke exhaust hatches, the investor gains the opportunity to: • reduce the fire resistance class of the building, • enlarge the acceptable fire zones, • lengthen the escape routes. Smoke hatches MCR-Prolight are a part of the smoke control system which includes other products of MERCOR SA, e.g.: smoke exhaust hatches in continuous rooflights and skylights MCR-Prolight, smoke curtains MCR-Prosmoke, central controllers MCR9705 and MCR0204 and others.
3. CONSTRUCTION AND PRINCIPLE OF OPERATION OF THE DEVICE
Depending on the requirements of individual customers, MERCOR offers smoke hatches, skylights and access hatchways MCR PROLIGHT PLUS on plain and skew bases, in a wide range of opening dimensions and base heights. All steel elements are protected with a zinc coating applied by hotgalvanising or electro-galvanising. As standard, the bases are delivered with 20 mm thick thermal insulation. Individual selection of the thickness and type of thermal insulation is possible. The following filling types of openable leafs and skylights are used: • cellular polycarbonate, 10 to 25 mm thick, different degrees of transparency, different heat transfer coefficients, • single, double, and triple acrylic domes, • solid polycarbonate boards, • laminar boards (e.g. aluminium – thermal insulation – aluminium) – so called “blind” filling.
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
Hatches MCR-Prolight of C, E and NG type are offered with the following control systems: • electrical control, • pneumatic control, • pneumatic-electrical control, • mechanical control. Tripping of smoke exhaust hatches or smoke exhaust and ventilation hatches may be realised both manually from the user level and automatically by thermal fuses, MCR type central smoke exhaust controllers, or fire alarm signalling controllers. Smoke vents, smoke exhaust and ventilation hatches, ventilation hatches, and access access hatchways MCR-Prolight consist of a fixed part – the base, and a movable part – the leafs with filling, while skylights consist only of a fixed part – the base with filling. Fig. 1. Hatch MCR Prolight a/ C, E type
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. b/ NG type
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
filling pressing frame supporting frame leaf cross-bar actuators holder smoke exhaust actuator venting actuator (option) hook console base thermal insulation of the base leaf gasket base flange hinge external planking – galvanized steel sheet
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filling pressing frame supporting frame leaf cross-bar actuators holder smoke exhaust actuator venting actuator (option) hook console base thermal insulation of the base leaf gasket base flange hinge external planking – galvanized steel sheet
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
4. TRANSPORT AND DELIVERY
Smoke vents MCR-Prolight of C, E, NG type are delivered in assembled form but in particular cases (additional external working, low bases, etc.) they may be delivered in the form of assemblies and subassemblies. The following items are always delivered separately: deflectors, directing nozzles, domes. It is caused by the necessity to protect individual elements of hatches against damage during transport, and to ensure the safety of road traffic. Unloading should be performed under supervision of a person authorised by the manufacturer, using generally available unloading means or manually. Fig. 2. Transport using a crane (a) and using a forklift (b)
Struts
5. ASSEMBLY OF THE DEVICE
Hatches, access hatchways and skylights should be seated on structural elements of the roof, such as: purlins, trimmer beams, structural sheet metal of the roof, reinforced concrete plinth. Smoke vents may be installed on roofs of steel, concrete, or wooden structure. The hatch base has a protrusion (shelf) in the lower part, used for supporting and fixing the hatch to the supporting structure. Adequate fasteners (min diameter 6 mm) should be chosen, depending on the material of the supporting structure (steel, concrete, wood). Fasteners should be installed at a span of max 50-60 cm. Fig. 3. Method of seating the hatches on the roof leaf filling pressing frame AL leaf frame
hatch base
fastening screw
supporting structure steel section
leaf filling pressing frame AL leaf frame
hatch base
expansion bolt
supporting structure reinforced concrete plinth
leaf filling pressing frame AL leaf frame
hatch base
wood screw supporting structure wooden
Hatch bases are adapted for roof work using roofing paper, PVC membrane, or sheet metal. The upper part of a hatch base is equipped with a strip of galvanised steel sheet on the entire perimeter, for mechanical fixing of roofing or roof work elements using screws. In the case if the roof is covered with a membrane, it is possible to use a strip of PVC-coated metal sheet (option) for easier assembly. ATTENTION: if bituminous roofing paper is heated to external planking (sheet metal strip) it is OBLIGATORY to use protection against heat for smoke vent leaf’s fillings and spacers.
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
6. METHODS OF MOUNTING AND ROOF WORK FOR HATCHES Fig. 4. Steel base on reinforced concrete slab – finishing with membrane
Fig. 5. Steel base on reinforced concrete slab – finishing with roofing paper
1. 2. 3. 4. 5. 6.
1. 2. 3. 4. 5. 6.
steel base of the hatch or skylight sheet metal strip for membrane mounting thermal insulation of the base finishing with membrane thermal insulation of the roof reinforced concrete slab
steel base of the hatch or skylight sheet metal strip for roofing paper mounting thermal insulation of the base finishing with roofing paper thermal insulation of the roof reinforced concrete slab
Fig. 6. Steel base on steel structure – finishing with membrane
Fig. 7. Steel base on steel structure – finishing with roofing paper
1. 2. 3. 4. 5. 6. 7. 8.
1. 2. 3. 4. 5. 6. 7. 8.
steel base of the hatch or skylight sheet metal strip for membrane mounting thermal insulation of the base finishing with membrane thermal insulation of the roof trapezium sheet metal additional roof work steel supporting structure
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steel base of the hatch or skylight sheet metal strip for roofing paper mounting thermal insulation of the base finishing with roofing paper thermal insulation of the roof trapezium sheet metal additional roof work steel supporting structure
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION Fig. 8. Steel base on steel structure – finishing with membrane
Fig. 9. Steel base on steel structure – finishing with roofing paper
1. 2. 3. 4. 5. 6. 7.
1. 2. 3. 4. 5. 6. 7.
steel base of the hatch or skylight sheet metal strip for membrane mounting thermal insulation of the base finishing with membrane thermal insulation of the roof trapezium sheet metal steel supporting structure
steel base of the hatch or skylight sheet metal strip for roofing paper mounting thermal insulation of the base finishing with roofing paper thermal insulation of the roof trapezium sheet metal steel supporting structure
Fig. 10. Steel base on steel structure – finishing with membrane
Fig. 11. Steel base on steel structure – finishing with roofing paper
1. 2. 3. 4. 5. 6. 7.
1. 2. 3. 4. 5. 6. 7.
steel base of the hatch or skylight sheet metal strip for membrane mounting thermal insulation of the base finishing with membrane thermal insulation of the roof trapezium sheet metal steel supporting structure
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steel base of the hatch or skylight sheet metal strip for roofing paper mounting thermal insulation of the base finishing with roofing paper thermal insulation of the roof trapezium sheet metal steel supporting structure
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION Fig. 12. Skew steel base on steel structure
Fig. 13. Skew polyester base on steel structure
1. 2.
1. 2. 3. 4. 5. 6.
3. 4. 5. 6. 7.
steel base of the hatch or skylight sheet metal strip for roofing paper or membrane mounting thermal insulation of the base finishing with membrane thermal insulation of the roof trapezium sheet metal steel supporting structure
polyester base of the hatch or skylight thermal insulation of the base finishing with roofing paper or membrane thermal insulation of the roof trapezium sheet metal steel supporting structure
Fig. 14. Steel base on steel, wooden, or reinforced concrete plinth
1. 2. 3. 4. 5. 6. 7.
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steel base of the hatch or skylight thermal insulation of the base thermal insulation of the overlay eaves finishing with roofing paper or membrane thermal insulation of the roof reinforced concrete slab
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
7. DEFLECTORS AND DIRECTING NOZZLES
1. Deflectors are used for increasing the active surface area of smoke exhaust of the smoke hatches. Deflectors are made of galvanised steel sheet, or optionally of aluminium or polyester sheet, and may be painted in any colour of RAL palette. They are mounted using a set of screws and nuts, through holes prepared in the hatch base. Fig. 15. Mounting of deflector to hatch base
1. 2. 3.
Deflector with consoles Mounting screws (cap screws) Hatch base
2. Directing nozzle is used for increasing the active surface area of smoke exhaust and it is mounted under the hatch. It is made of galvanised steel sheet, or optionally of aluminium sheet or fibreglass-reinforced polyester, and may be painted in any colour of RAL palette. The nozzle should be mounted using metal fasteners chosen depending on the material of the supporting structure (min diameter 5 mm), at a span of max 50-60 cm, through the upper flange of the nozzle (Fig. 15 and 16). Fig. 16. Directing nozzle
a, b – nominal dimensions of the hatch
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION Fig. 17. Suspending a directing nozzle under a hatch on steel structure
1. 2. 3. 4. 5. 6. 7. 8. 9.
Fig. 18. Suspending a directing nozzle under a hatch on concrete plinth
steel base of the hatch or skylight sheet metal strip for mounting of the roofing board or membrane thermal insulation of the base finishing with roofing paper or membrane thermal insulation of the roof trapezium sheet metal additional roof work steel supporting structure directing nozzle
8. VENT LEAF ADJUSTMENT
(HOOK CONSOLE, EKE BOLTS AND 'T' BOLTS)
1. 2. 3. 4. 5. 6. 7.
steel base of the hatch or skylight sheet metal strip for mounting of the roofing board or membrane thermal insulation of the base finishing with roofing paper or membrane thermal insulation of the roof steel supporting structure directing nozzle
The hatch leaf is connected to the actuator with a hook console. The hook console is locked on a T bolt. Pneumatic and electrical spindle actuators are connected to the hook console with an eye bolt that is screwed into the piston rod/spindle of the actuator. Play of the hatch leaf should be reduced by screwing in the eye bolt or by adjusting the T bolt. The eye bolt or the T bolt should be protected against screwing out with a locknut. In the case if an additional 230 V~ electrical actuator is used for ventilation in a system with pneumatic actuator, the T bolt is screwed into the toothed strip or the spindle of the 230 V~ electrical actuator. Fig. 19. T bolt
Fig. 20. Hook console
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Fig. 21. Eye bolt
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION Fig. 22. Connection of actuators with hook console
9. CONTROL
Operation of the smoke exhaust hatches, smoke exhaust and ventilation hatches, and ventilation hatches MCR-Prolight of C, E, NG type requires some devices for their opening and closing. These devices form a control system for smoke exhaust or smoke exhaust and ventilation. Depending on the type of devices used, a smoke exhaust control system may be executed as: • pneumatic system, • electrical system, • mechanical system, • pneumatic-electrical system (pneumatic part for smoke exhaust and electrical part controlling the ventilation). Depending on the method of control, the hatches MCR-Prolight of C, E, NG type are equipped with pneumatic actuators with thermal trippers, electrical actuators or gas springs (for smoke exhaust control), and additionally with pneumatic and electrical actuators for natural ventilation control. Hatchways are equipped with a gas spring to assist opening.
9.1. Pneumatic control
Depending on the system configuration, it may be necessary to connect additional pneumatic conduits to the hatch (e.g. copper/steel tube to an emergency box with cartridges).
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION Fig. 23. Method of mounting the flexible conduits of the pneumatic system
Nut Conduit Clamping ring Bush (for plastic conduits) Body Fig. 24. Connection of the hose joint with the copper/steel tube
Copper tube Clamping ring
Nut
Body
Threaded connections of hose joints with valves, actuators, etc. are sealed using suitable chemical agents, e.g. Loctite 243 (recommended) or Teflon tape, by winding it on the thread. Loctite 243 should be applied in several (2-3) drops on the thread for sealing. After making the screwed connection, Loctite 243 sets, sealing the connection and protecting it against uncontrolled loosening (important in the case of actuator connections). Such protected hose joint may only be unscrewed using hand tools. Smoke vents with pneumatic actuators are equipped with a cord that is limiting mobility of the smoke vent’s leaf. Cords must be unlocked before launch of the smoke vent [cords must hang down freely]
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
NOTE: For safety reasons during transport, the thermal tripper in the hatch is not armed. After the hatch is mounted together with roof work, possible plays of the hatch leaf should be reduced and the thermal tripper should be armed. Arming of the thermal tripper: - check if the screw tightening the needle spring (1) is unscrewed, and if not, fully unscrew it manually, - install the alcohol ampoule (2) in the gas flow controller socket, with the sharpened end towards the body, and manually tighten the screw fastening the ampoule, - slide in the valve slider (4), - fully tighten the needle spring using the screw (1) – manually, - check if the cartridge needle is hidden, and if the gasket is present in the cartridge socket, - manually screw in the CO2 cartridge (3).
Fig. 25. Pneumatic actuator – lock releasing direction
Fig. 26. Thermal tripper
Pneumatic actuators for smoke exhaust have an internal lock that prevents the closing of a fully opened hatch leaf. Method of closing the hatch leaves after emergency opening for systems without the remote closing function: 1. Release CO2 from the system by unscrewing the cartridge from the thermal tripper or the emergency box (note: the system is under high pressure – unscrew slowly, note: the cartridge may freeze). 2. Release the locks of the actuator (5), by lifting them in the direction of the operating movement of the actuator (in accordance with the arrow in Fig. 25). 3. Lower the hatch leaf. 4. Check the condition of the leaf lock. 5. Insert a new CO2 cartridge into the thermal tripper or the emergency box. 6. Possibly replace the thermal fuse (alcohol ampoule (2)).
9.2. Electrical control
The leaf opening control system using a 24V= electrical actuator for smoke exhaust is delivered premounted in the hatch. Adaptation for operation consists in connecting the eye bolt of the electrical actuator with the bolt of the hook console, and adequate adjustment so that the console reliably locks on the catch, while the electrical actuator is switched off after closing the hatch by the limit switch and not by the overload switch.
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
Method of connecting the MCR-W actuator (conductor polarisation): brown conductor + brown conductor – } spindle moving in } spindle moving out blue conductor – blue conductor + For control and power supply of electrical actuators MCR-W for smoke vents MCR PROLIGHT should be used control units MCR9705 or MCR0204 and extension modules MCRR0424 and /or MCRR0448.
9.3. Ventilation function
The ventilation functions may be realised using 2 basic methods: - using pneumatic actuators with adequate system, - using an additional electrical actuator supplied with 230 V~ (figure below). The electrical actuator for ventilation is usually not factory-mounted due to transport considerations. It should be mounted in the console of the opening system, using screws ST 12 1/8 (for the Exxx-230 actuator) or threaded bolts (JMB actuators) delivered with the actuator. The actuator is equipped with a T bolt that is used interchangeably with the eye bolt connecting to the hook console. A weather monitoring station, e.g. MCRP054, is recommended in the ventilation control system, to close the opened hatches in the case of a strong wind or rain, in order to protect the user property and the hatch structure against damage.
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white
white
blue
Fig. 30. Connection diagram for 230 VAC electrical actuator for ventilation a/ Actuator of type E xxx - 230 V has two circuits: • operating – movement direction control (conductors: black/brown – blue), • signalling (conductors: 2 x white; signalling of actuator opening – volt-free contact).
Fig. 29. ST 12 1/8 screw
brown
Fig. 28. T bolt
black
Fig. 27. Actuator for ventilation control (Exxx-230 type)
HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
black 3
black 2
blue
black 1
brown
b/ Actuator of type JMBB-500-300-LA has two circuits: • operating – movement direction control (conductors: brown/black1 –blue), • signalling (conductors: black2/black3; signalling of actuator opening – volt-free contact).
10. LEAF FILLING
Filling in the form of domes is delivered separately due to transport considerations. Domes should be mounted in the hatch leaf on the construction site, after mounting the hatch, according to the following scheme: 1. remove the pressing frame (unscrew the M6x30 screws, remove the spacing sleeves); 2. check the condition of the PES gasket on the supporting frame (clean from dust); 3. lay the elements of multi-layer domes successively from the lowest to the highest – separate individual domes with the delivered gasket – glue the gasket to the previously laid dome – on the perimeter (see figure below) keeping 1 cm break at the corners; 4. place the pressing frame; 5. insert the spacing sleeves; 6. screw in the M6x30 screw, pressing the frame down simultaneously. Cellular polycarbonate filling is delivered factory-mounted. Possible replacement consists in performing the actions 1,2,4,5,6 according to the steps above. Fig. 31. Mounted dome diagram
External dome Gasket
Pressing frame
Internal dome
M6x30 screw
PES gasket
Spacing sleeve Supporting frame
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
11. MAINTENANCE OF HATCHES
Periodical maintenance and servicing inspections of installed devices are necessary during operation. Servicing and maintenance activities are performed by the authorised service MERCOR SA. The interval between servicing inspections is 6 months. The following actions performed by the user are recommended between the inspections: 1. Checking the condition of electrical connections with special attention to mechanical damage. 2. Checking the condition of pneumatic connections with special attention to mechanical damage. 3. Checking the condition of hook consoles (whether they are fully closed and not locked). 4. Checking the condition of gaskets. 5. Periodical cleaning of the surfaces of domes/polycarbonate boards: for cleaning use a sponge or soft cloth and lukewarm water with addition of mild cleaning agents commonly used in household. The boards must not be scrubbed using brushes or sharp objects. Do not use abrasive agents, strongly alkaline agents, solvents, etc. In doubtful cases make a test of the cleaning agent on a sample or a small surface.
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HATCHES MCR PROLIGHT
OF C,
E, NG TYPE
TECHNICAL AND OPERATIONAL DOCUMENTATION
12. TERMS OF GUARANTEE AND SERVICE
1. MERCOR SA grants 12-month guarantee for the sold devices, unless the „delivery contract” or the „delivery and mounting contract” states otherwise. 2. If faults resulting from hidden defects of devices should occur during the period of guarantee, MERCOR SA assumes the obligation to rectify them within a period not longer than 21 days since reporting. 3. In the case of faults resulting from improper utilisation of devices, or other causes independent of MERCOR SA, the purchaser shall be charged with the costs of their rectification. 4. MERCOR SA reserves the right to extend the repair period in the case of repairs which are complex or require the purchase of non-standard subassemblies [elements] or spare parts. 5. In accordance with the generally accepted practice, the guarantee does not cover: • damage and failures of devices caused by improper utilisation, lack of maintenance or lack of periodical inspections, • damage of devices resulting from causes independent of MERCOR SA, in particular by random events in the form of downpour, flooding, hurricane, inundation, lightning stroke, overvoltages in electric mains, explosion, hail, aircraft fall, fire, avalanche, landslide, or secondary damage resulting from the above causes. Downpour is considered as rainfall with efficiency ratio of at least 4, established by IMiGW. Hurricane is considered as wind with velocity of at least 17.5 m/s, • damage resulting from neglecting the obligation of immediate reporting of every observed fault, • deterioration of the quality of layers resulting from natural aging processes (fading, oxidation), • faults resulting from the use of abrasives or aggressive cleaning agents, • parts subject to natural wear during use (e.g. gaskets), unless a manufacturing defect occurred in them. 6. Every fault subject to the guarantee should be reported immediately to MERCOR SA. 7. The purchaser is obligated to proper utilisation and maintenance of the purchased devices, performing periodical servicing inspections (at least 2 times per year) and recording of every servicing inspection in a „building object book” in accordance with art. 64 of the Building Law. 8. Guarantee and warranty expire with immediate effect in the following cases: • if the purchaser or the user introduces structural modifications on their own without prior agreement with MERCOR SA, • if maintenance or periodical servicing inspections have not been performed on time or have been performed by a service that is not authorised by MERCOR SA or if devices have been utilised incorrectly, • any intervention of unauthorised persons – except for the activities included in the scope of normal utilisation of devices. 9. Matters not regulated by these terms of guarantee shall be governed by regulations of the Civil Code, and especially art. 577-581. SERVICING INSPECTIONS: 1. Devices should be subject to periodical servicing inspections every 6 months during the entire period of their operation. 2. The servicing inspections should be performed by companies having adequate authorisation of MERCOR SA. 3. On issues related to service please contact the Service Department, phone 058/ 341 42 45 ext. 127 or fax 058/ 341 39 85, Monday to Friday from 8 to 16.
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