(B) 2020/11
6.Maintenance
9
6.
Maintenance
6.1.
GENERAL CONSIDERATIONS
The maintenance work of any equipment intended for use in potentially explosive
atmospheres can only be carried out with the appropriate work permit, as
specified by EU Directive ATEX 2014/34/EU.
Maintenance jobs can only be done by qualified personnel. Use the proper clothing.
Ensure that staff read the entire instructions manual and this Annex and, in
particular, indicate those chapters that refer to the job to be done.
Use tools that are technically suitable for the maintenance and repair works being carried out. If the area is
not unclassified, all the tools must be flameproof and a safe-work permit must be issued before starting the
job.
In addition to the instructions included in the manual, the instructions of the motor's manufacturer must
also be followed strictly in order to open the motor safely.
The possible presence or formation of explosive atmospheres must be taken into
account when emptying the pump, permits to work must be issued and any
possible source of ignition in the area surrounding the equipment or the work
place must be eliminated.
When ordering spare parts for a pump operating within a classified area, it must be expressly stated that
the pump is an ATEX pump and the manufacture number must be quoted.
Otherwise, INOXPA cannot ensure that the pump will operate with parts that are suitable for the classified
area within which it is installed.
6.1.1.
Check the mechanical seal
Check areas 1 and 21 daily. Check areas 2 and 22 weekly.
For a Double mechanical seal:
-
A control of temperature, level and barrier liquid pressure are essential and it is
advisable to install an automatic device that stops the pump when the temperature of
the liquid exceeds the temperature class in the classified area or when the liquid level is
not what it should be.
For a Simple mechanical seal + thermosensor:
The instructions of the mechanical seal manufacturer, and in particular those
concerning the temperature probe, must be followed at all times.
6.2.
CLEANING
The user is responsible for establishing a cleaning or disinfection plan that suits their needs. This plan should
take into account all applicable laws, regulations and standards related to protection of public health and
safety in the use and disposal of chemical products.
The working environment should be clean. Some parts are very fragile and others have small tolerances.
The possibility of the presence of an explosive atmosphere must also be considered. Therefore, these jobs
can only be carried out after the appropriate work permit has been issued.
