Pfannenberg EB 210, Operating And Maintenance Instructions Manual, Page: 59 / 293

Operating and Maintenance Instructions - Chiller - Series EB 210 - EB 440 © Pfannenberg GmbH Page 59 / 293
EN
2.3 Residual risk
There are some residual risks after the installation of the unit that must be considered:
Residual risks according to 2006/42/CE Directive:
The condenser has fins on his external surface, so there is the possibility for the operator to touch sharp edges
during service of the unit.
Although the unit is designed with all the possible safety requirements, in case of external fire there is the possibility
that the internal pressure and temperature of the unit will increase in a dangerous and uncontrollable way; in that
case use the extinguishing tools suitable for that conditions.
Safety valve should be maintained according to the maintenance instruction (see chapter Maintenance ) to avoid
malfunctions in case of necessity (e.g. in case of external fire the pressure of the refrigerant circuit could rise to a
critical value).
For units without emergency switch-disconnector: chiller user must install the emergency switch-disconnector
installation close to the chiller, in an accessible and clearly visible place, to allow emergency stop of the unit and
safety for the operator.
Even if the instructions contained in this manual are enough explanatory for safety, high pressure switches are
mounted, to guarantee intervention in case of wrong filing, or in case of malfunction due to not controlled
increase of pressure and temperature.
Even if in this manual is clearly indicated to switch off the unit before doing any maintenance or control operation,
protection elements of the unit, as fixed panels, are not provided with safety devices that block the operation of
the unit if they are not mounted, in that case the operator could be exposed to contact with internal rotating parts.
In case of damage of fans protection grids, possible risk for the rotating part should be considered by the utilizer; in
this situation the unit should be immediately switched off and repaired.
Residual risks according to 2014/68/UE Directive:
Although the unit is designed with all the possible safety requirements, in case of external fire there is the possibility
that the internal pressure and temperature of the unit will increase in a dangerous and uncontrollable way; in that
case use the extinguishing tools suitable for that conditions.
For the series production of the standard units of category

, the pressure resistance test (typically the hydrostatic
pressure test) is made on a statistic base, not on all units.
This can be accepted, also considering all the safety devices mounted on the units.
For units without emergency switch-disconnector: chiller user must install the emergency switch-disconnector
installation close to the chiller, in an accessible and clearly visible place, to allow emergency stop of the unit and
safety for the operator.
Even if the instructions contained in this manual are enough explanatory for safety, high pressure switches/safety
valves are mounted, to guarantee intervention in case of wrong filing, or in case of malfunction due to not
controlled increase of pressure and temperature.