Sound Level; Connection Due To Duct Installations; Protection Against Involuntary Accidents; Protection For Air Inlets And Outlets Of The Fan - Woods HT Installation Manual & Technical Specifications

9.8 SOUND LEVEL

Depending on the fan model, its voltage size and revolutions, this may oscillate between 37 and l00dB (A).
Thesoundlevelcorrespondingtoeachconcretemodelisspecifiedinitstechnicalsheet.Ifthefandoesnot
comply with the permitted local limitations of maximum noise level, other alternative solutions should be
consideredinordertoreducethissoundlevelbyinstallingsilencers,barriersorsoundproofingcases.

9.9 CONNECTION DUE TO DUCT INSTALLATIONS

In cases where the fan is connected to a duct network for air distribution, the suction and impulsion ducts should
beconnectedtothecorrespondingfannozzleusingtheadaptationflangesrecommendedbythemanufacturer.
Togetherwiththeflanges,elasticgasketsshouldbeusedwheneverpossible(bothshouldberequestedseparately
fromthefan,meetwithF400technicalrequirementsandspecifications.Theductnetworkshouldneverleanon
the fan, but be self-supporting.

9.10 PROTECTION AGAINST INVOLUNTARY ACCIDENTS

Through Woods Air Movement, products (accessories) are available that protect the rotating body (propeller or
turbine) in every fan model, according to UNE EN 294. The installer or end user must request and install these
products to protect accesses to the interior of the fan that remains open, accessible and not connected to a duct.
IMPORTANT: The turbine or propeller may not be visible when it is rotating in poorly lit conditions.
9.11 IP20 PROTECTION FOR AIR INLETS AND OUTLETS OF THE FAN
In ATEX applications, an IP20 protection is recommended. In ducted installations, the installer is responsible for
ensuring this protection. In a free inlet or outlet installation, the end user must ensure that the protection guard
(accessory) for the fan is mounted.

9.12 START-UP

Onceallthecheckshavebeendone,start-upofthefancanbecarriedout.Beforeproceedingwiththefirststart-
up, it is recommended that another thorough inspection is made to ensure that there is no friction in any of the
rotating elements caused by deformation. It is also vital to check that there is nothing contained within the ducts.
Thefirststart-upshouldbeshortandcarriedoutonlytocheckthattherotatingdirectioniscorrectaccordingto
thespecifications,andifthereareanystrangeorfrictionnoisesintheinterior.Incaseofanincorrectrotation,
connection changes should be carried out as previously stated. During the second start-up, the fan should be
allowed to reach its target velocity. If regulation shutters are used, these should be open so that the fan can adapt
itself to the required installation conditions.
IMPORTANT: AT THIS TIME, A STRICT REAL CONSUMPTION CONTROL OF THE APPARATUS SHOULD BE CARRIED
OUT THROUGH THE AMPEROMETRIC CLIP AND BY MAKING SURE THE USED NOMINAL CONSUMPTION "In"
DOES NOT EXCEED THAT INDICATED ON THE VOLTAGE PLATE. IF THIS CONSUMPTION IS EXCEEDED, STOP THE
APPARATUS IMMEDIATELY.
An excessive consumption may be due to a motor failure, to the friction of some element, or an error in the
electrical connection. In most cases, however, it is due to incorrect installation, with an excessive or defective load.
Iftheproblemoccursinacentrifugalfan,theairflowshouldbereduced,eitherthroughtheregulationshutter,or
by adding some kind of metal strip that closes part of the discharge or suction duct of the fan.
IMPORTANT: Do not mount any part directly onto the fan, as it could alter the fan's non sparking characteristics.
In this instance, ensure no poorly anchored elements are used, as they could be sucked into the fan once it is
turned on. Once the installation has been readjusted, make sure the consumption is adequate. The fan should
operate properly once this adjustment has settled
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