LUCOMA DRK Manual

Installation, Operation and Maintenance Instructions
Pressure-relief dampers DRK
Back-draught dampers RSK
Product designation
DRK-10…., RSK10….
Technical specifications
Max. size W × H: DRK: 2400 mm × 7900 mm
RSK: 7900 mm × 7900 mm (subject to shipping)
Max. slat length: 1200 mm
Tripping pressure: DRK: acc. to order
RSK: no specified tripping pressure
Air flow direction: horizontal or vertical acc. to customer order
Free cross section: >60 % ((more precise figures after calculation
by manufacturer)
ATEX
DRK and RSK are only approved in specific designs and with appropriate iden-
tification for Zones 1, 21 or 2, 22 according to ATEX Directive 2014/34/EU.
If the fitter or operator changes the dampers in any way, the ATEX approval
becomes null and void. It is important to ensure that the damper and additional
equipment are installed in compliance with zoning requirements.
Shipment
In principle, avoid all damage caused by external influenc-
es. Never lift dampers by the slats or the outer linkages.
Dampers with a maximum weight of 50 kg can be lifted by
the C-profile frame. With heavier dampers, use at least
four points at the corner angles as suspension points. Do
not use individual slats under any circumstances as foot-
holds during installation. Report any damage, e.g. defor-
mation of slats, dents, impacts or warping of the C-profile
frame etc. immediately to the supplier or manufacturer.
This may impair the proper functioning of the damper and
at best cause dangerous circumstances to occur.
ATEX: Under no circumstances may ATEX dampers be fitted
after a fall or impact with visible or concealed damage.
Installation
These dampers can be fitted or removed to or from a wall
or an air conditioning system, or integrated in a duct sec-
tion. First make sure the air flow is in the proper direction
as indicated by the red arrow on the damper housing.
Mount the dampers warp-free, tension-free, on a flat sur-
face and without any angular errors in the damper frame.
When mounting, use the 4 corner holes provided as stand-
ard. With larger dampers, fit additional flange couplings
at spacings of 200–500 mm. This is the responsibility of
the planning engineer or fitter. During installation, make
sure that the slats are exactly horizontal. The damper
must be adjusted exactly vertically (for horizontal air flow)
or exactly horizontally (for vertical air flow).
When installation is complete, check the angle of the
damper frame. It must be exactly 90°. Correct any devia-
tions immediately. In addition check the free movement
of the slats, linkage and tripping mechanism.
Avoid as far as possible any reduction in freedom of move-
ment on customer premises when installing insulation ma-
terials, installation ducts, auxiliary structures etc. If this is
not observed, it can lead to considerable disruptions in
operation, e.g. slats rub against the damper frame, different
tripping pressure, damper fails to open or close, reduced
leak tightness, etc.
On models with side seals (Di, DIN, CEN etc.) protect the
units from impurities of all kinds during the installation
phase. Drilling swarf and concrete chips can damage the
side seals. Before starting up the dampers, wipe the side
seals thoroughly until they are dry.
ATEX: All relevant national and international standards
and regulations for Ex zones must be observed. On damp-
ers with ATEX functionality in particular, the damper hous-
ing must be earthed using the earthing braids attached
by the manufacturer. No mechanical changes may be
made to the product. In addition do not attach any com-
ponents (motors, limit switches, etc.) to the damper if they
have not been analyzed for ignition risk by the appropriate
manufacturers or approved for ATEX zones. It is prohibited
to drill holes or fit bolts or screws in the interior of the
dampers. This could lead to damage or disturb damper
operation. If there is a risk at the factory that foreign bod-
ies may enter the movement area of the slats, prevent
them by suitable means (filters or catchment grills). This
prevents the slats from sticking and the possibility of fric-
tional heat developing.
LUCOMA AG, Weekendweg 5, CH-3646 Einigen, Switzerland
Tel: [phone], Fax: [phone], www.lucoma.com, [e-mail]

Page 2 / May 2019
Installation, Operation and Maintenance Instructions
Pressure-relief dampers DRK
Back-draught dampers RSK
Ifitting motors
DRK and RSK basically function without a motor. However,
for special applications, a motor may be fitted using a
special bracket. When fitting motors, always comply with
the maintenance and fitting instructions of the motor
manufacturer. With lift motors, pay special attention to
power transmission at right angles to ensure trouble-free
operation of the damper. Especially with drive motors
which have high closing speeds, pay special attention to
adequate protection of the movement areas (slats and
linkages) to prevent reaching into the mechanisms.
Responsibility lies with the operator.
ATEX: All relevant national and international standards and
regulations for Ex zones must be observed. In particular,
only drive motors, limit switches etc. with special approval
for use in ATEX zones are allowed. Responsibility lies with
the operator.
Adjusting tripping pressure
RSK: Back-draught dampers have no specified opening
pressure.
DRK: The tripping pressure is adjusted according to cus-
tomer specifications on a test stand at the manufacturer’s
factory. After installation, the tripping pressure may be
readjusted within a limited range as required. This occurs
by sliding the tripping weight on the lever and refixing it in
the required position. If the weights are arranged above
a passageway, it is imperative to install a suitable catch-
ment device.
Maintenance
Depending on the degree of soiling of the medium, carry
out a dry clean from time to time; the seals in particular
must be cleaned at regular intervals. In addition, operate the
dampers at regular intervals to test for their operability
depending on the specific plant conditions. This prevents
the adjacent slats from sticking. The slide bearings can be
blown off using compressed air as required, although they
are basically maintenance-free (lubrication). Otherwise
the DRK models operate maintenance-free.
Only LUCOMA genuine spare parts may be used for all
repair and maintenance work.
ATEX: All relevant national and international standards
and regulations for Ex zones must be observed.
Special instructions
Before using LUCOMA dampers in areas with increased
requirements, report the prevailing conditions to the
manufacturer so that the correct damper materials can
be selected. The correct damper materials are especially
important in factories with chemically laden atmospheres,
electroplating shops, battery rooms etc.
Warranty
When installed and operated properly, the warranty ac-
cording to the Swiss Code of Obligations is 2 years.
ATEX: Dampers operated in ATEX zones should be replaced
every 10 years for safety reasons.