2
VDD.. – Roof Fans
Installation and Operating Instructions
• Ensure the suitable load capacity and properties of the mounting surface
and use suitable mounting material.
• Depending on the fan size, ear protectors may be necessary when working
or standing near the running fan!
• All plant-related safety regulations must be observed! If applicable, further
country-specific regulations must also be observed!
• Protection against contact must be ensured pursuant to DIN EN 13857 in
the installed condition (section 1.5)! Contact with rotating parts must be
avoided.
• It must be ensured that there must be no persons, textiles or other mate-
rials that could be sucked up, such as clothing, located in the intake area.
Furthermore, the outlet area must be kept free from objects and material that
could be ejected.
• Easy accessibility for inspection and cleaning personnel must be ensured, other
persons must not have access to the fan!
• A uniform inflow and free outlet must be ensured!
• A motor protection device (accessories) is absolutely essential for all motors
(except Ø
315, 355 and 400/6)!
1.3
Area of application
- Normal use:
The conveying of normal or slightly dusty (particle size < 10 µm), less aggressive and humid air, in moderate climates
at temperatures in the range from -20 °C to max +120 °C, with stationary installation of the fan.
Installation: Horizontal on roofs (chapter 3.0), inaccessible to unauthorised persons.
– Reasonably foreseeable misuse:
The fans are not suitable for operation under difficult conditions, such as high levels of humidity, aggressive media,
long standstill periods, heavy contamination, excessive loads due to climatic, technical or electronic influences. The
same applies for the mobile use of fans (vehicles, aircraft, ships, etc.). The motor sizing was carried out for perma-
nent operation pursuant to S1 and rules out high starting frequency. It must be ensured that the intended area of
application is adhered to.
– Improper, prohibited use:
The conveying of explosive gas mixtures/media. Installation in an explosive area/atmosphere. Operation without
standardised safety devices (e.g. protection guard). The conveying of solids or solid content > 10 µm in the transport
media and liquids. The conveying of abrasive and/or media that is corrosive to the fan materials. The conveying of
greasy transport media. Vertical (hanging) installation of the roof fan.
1.4 Boundaries
Spatial boundaries:
A straight, flat pipe section or free suction must be ensured for the suction area. The outlet area must not be
blocked, a minimum distance of 1 m from the fan must be observed. The fan must be easily accessible for cleaning
and maintenance purposes, particularly the terminal box/isolator switch.
Power supply interface:
– Connection only with permanently installed lines
– 3 PE + 2x TB (TK) or TP (KL)
– A motor protection device (accessories) is absolutely essential for all motors (except Ø 315, 355 and 400/6)!
1.5 Protection against contact
The generally applicable safety at work and accident prevention regulations must be observed for installation!
The operator is responsible for observing these regulations!
– Contact with rotating parts must be avoided. It must be ensured that there must be no persons, textiles or other
materials that could be sucked up, such as clothing, located in the intake area.
– Protection against contact may be necessary on the suction side depending on the installation conditions.
– Fans which are protected by their installation method (e.g. installation in ventilation ducts or closed assemblies) do
not require protection guards if the plant provides the necessary level of safety. Please note that the operator is
responsible for complying with the current standard (DIN EN 13857) and can be held liable for accidents as a con-
sequence of missing protection systems.
1.6 Personnel qualification
– All electrical work as well as the start-up must only be carried out by qualified electricians.
– Installation, servicing and maintenance may be carried out by specialists (e.g.: industrial mechanics, mechatronics
engineers, metal workers or persons with comparable training) with the exception of electrical work.
m
WARNING
EN
* The maximum transport media temperature
of the respective unit can be found in the
currently applicable Helios sales documents.
