Safety Requirements - Vents VKV Series User Manual

11
VKV, VKH, VKV EC, VKH EC, VKMK, VKMKp, VOK, VOK1
The centrifugal fan VKH/VKH EC (fig. 2) consists of the pan 1 connected
through a net 2 to the base with the fixed electric motor and impeller on it.
The VKH EC fan is equipped with a EC motor.
The cover 3 that protects the electric motor against weather factors is fixed to
the base. The terminal box for connection of the fan to single- or three-phase
power mains and placement of the operating capacitor is fixed to the upper
casing part.
The centrifugal roof fan VKMK/VKMKp (fig. 3) consists of the casing 3 and
the flange 2. The impeller and the electric motor are placed inside the fan
casing. The cover 3 is attached to the casing with self-tapping screws.
The terminal box 4 for connection of the fan to single- or three-phase power
mains and placement of the operating capacitor is fixed to the upper casing
part.
The axial fan VOK/VOK1 (fig. 4) consists of the casing 1 with a square flange
2 (VKMK modification) or a plate (VKMKp modification).
The impeller and the electric motor are placed inside the axial fan casing.
The cover 3 is attached to the casing with self-tapping screws.
The terminal box 4 for connection of the fan to single- or three-phase power
mains and placement of the operating capacitor is fixed to the upper casing
part.

SAFETY REQUIREMENTS

All electric connection, adjustment, servicing and repair operations must be
done with the fan disconnected from power supply.
Electric connection works must be done by a duly qualified electrician with a
valid electrical work permit for operation up to 1000 V units. Read this manual
before starting any electrical works.
Make sure of no visible damages of impeller, casing, grille and no foreign
objects inside the casing that can damage the impeller blades.
Misuse of the fan and any unauthorized modifications are not allowed.
The unit is not to be used by children and persons with reduced physical,
mental or sensory capacities, without proper practical experience or expertise,
unless they are controlled or instructed on the unit operation by the person(s)
responsible for their safety.
The fans are not designed for operation in the environment containing
flammable substances or vapours like alcohol, gasoline, etc.
The fans are powered by single-phase 230 V/ 50 Hz
(VKMK and VKMKp 230 V/ 50 Hz, 60 Hz) alternating current or by
three-phase 400 V/ 50 Hz alternating current.