Residual Risks; Mechanical Hazards - Munters EM Serie Manual De Uso Y Mantenimiento

is provided with protection devices of fixed type and is
fitted with an actuator for the emergency stop function.
Fixed guards
The fixed guards are solidly fixed to the structure of
the machine and cannot easily be eluded: the guards
are fixed with systems which require the use of tools for
dismantling.
Do not start the fan with fixed guards removed:
!
the guards can only be removed with special
tools, by specialized and trained personnel
and with the system stationary (emergency system
activated and electricity and hydraulic fluid isolated).
At the end of maintenance operations, the guards which
were removed must be replaced correctly.
1. Position of guard: intake side of fan
Type of guard: guard of fixed type made of metal
mesh
Note: dimensions and positioning in accordance
with the instructions in the standard UNI EN 13857.
Removable only by means of special tool.
2. Position of guard: outlet side of fan
Type of guard: guard of fixed type made of metal
mesh
Note: dimensions and positioning in accordance
with the instructions in the standard UNI EN 13857.
Removable only by means of special tool.
Emergency stop function
The machine must be equipped at the installation stage
with an electrical panel, on which must be installed
an actuator for the emergency stop function, which
when operated brings dangerous movements to a halt
by isolation of the power supply: the button must be
mushroom-shaped and coloured red, provided with
mechanical restraint and released by turning.

3.4 RESIDuAL RISkS

Mechanical hazards

Part of machine/stage of use: installation of machine
Description: hazard arising from failure to observe
ergonomic principles, caused by excessive strain, i.e.
generic mechanical hazard during the moving and
installing stages of the machine.
Electrical hazards
System area: panels, covers and electrical apparatus.
Description: the safety signs must be fixed in an extremely
visible position on the door of the electrical panel and on
covers containing electrical apparatus, to highlight the
risks to which an operator could be exposed in the event
of opening the electrical panel (danger resulting from
the presence of live parts), the level of voltage present,
the prohibition of tampering by unauthorized personnel
and the prohibition on the use of liquids on electrical
apparatus in the event of fire.
Hazards generated by noise
A measurement has been made of the noise produced
by the machine during normal operation in order to
calculate the equivalent level in conditions of normal use.
These values are shown in the following table.
Fan model
EM52 - 2.0hp
EM/EMS50 - 1.5hp
EM/EMS50 - 1.0hp
ED/EDS36HE - 0.75hp
ED/EDS30HE - 0.50hp
ED/EDS24HE - 0.50hp
EC52 - 2.0hp
EC52 - 1.0hp
EC50 - 1.5hp
EC50 - 1.0hp
Tab. 2.
The user and the employer must comply with
!
current national law in terms of protection
against daily personal exposure of operators
to noise, by providing the use of personal protective
equipment (earmuffs, earplugs, etc.) if necessary,
depending on the overall level of sound pressure in
the installation area, and the daily personal exposure
of the employees. In areas where the overall sound
level reaches excessive values, personal protective
equipment must be used.
© Munters AB, 2013
Sound pressure level
Lp [dB(A)]
measured at 2m distance
78
75.8
74.2
81.7
79.1
80.5
79.2
76.5
77.4
75.2
5