Wolf LH, Operation And Maintenance Instructions

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Safety instructions Installation, commissioning, service and operation may only be carried out by qualified
personnel.
For electrical installations VDE regulations and local guidelines have to be adhered to.
The unit may only be operated within the capacity range indicated in the technical
documents of Messrs. Wolf.
The unit may only be applied for purposes of ventilation. It is ony suitable for air. The
air must not contain any hazardous, combustible, explosive, aggressive, corrosion
developing or any other dangerous substances.
The unit may only be operated in technically perfect condition. Any malfunction or damage
which may influence the safety or perfect function of the unit have to be eliminated by
a recognized specialist, at once.
Damaged unit components may only be replaced by original Wolf - spare parts.
Only qualified electricians are allowed to perform work on electrical appliances or com -
ponents, adhering to the electric regulations.
It is not allowed to work in the direct vicinity of a running fan. There is a risk of being
hurt by the running fan.
Before undertaking maintenance work, always ensure that the system main isolator /
the repair switch(es) are OFF and locked to prevent unintentional reactivation.
Safety Instructions / Standards,
Regulations / Unit Description
Wolf unit heaters consist of a zinc plated sheet steel casing. The casing is composed
of a self-supporting pentapost profile construction, which is welded and zinc plated, and
of zinc plated lateral casing panels.
The casing is provided with a LPHW-heating coil which consists either of copper tubes
and aluminium fins or galvanized, finned steel tubes.
The air inlet is provided with a unit consisting of an axial fan-motor-protection grille as-
sembly which takes the air in via the air inlet in the rear panel. While passing the heat
exchanger on the discharge side the air is heated. The warm airstream may be turned
downwards via an adjustable discharge louvre.
General unit
description and design
Standards, Regulations The following standards and regulations apply to the LH unit heaters:
- Machine directive 2006/42/EU
- Low voltage directive 2006/95/EU
- EMC directive 2004/108/EU
- DIN EN 12100 Safety of machines; general design principles
- DIN EN 13857 Safety of machines; safety distances
- DIN EN 349 Safety of machines; minimum distances
- DIN EN 953 Safety of machines; guards
- DIN EN 60204-1 Safety of machines; electric equipment
For the installation and maintenance, the following regulations and safety in-
structions have to be adhered to:
- DIN VDE 0100 Requirements for high voltage installations up to 1000 V
- DIN VDE 0105 Operation of high voltage installations, general restrictions
- DIN VDE 0701-0702 Repair, modification and testing of electrical appliances