(0) 2018/05
7. Maintenance
15
7.
Maintenance
7.1.
GENERAL CONSIDERATIONS
This valve, just like any other machine, requires maintenance. The instructions in this manual cover the
identification and replacement of spare parts. The instructions are aimed at maintenance personnel and
those responsible for the supply of spare parts.
Carefully read chapter 8. Technical specifications.
All replaced material should be duly disposed of/recycled according to the directives in effect
in each area.
Valve and/or actuator assembly and disassembly should only be done by qualified persons.
Before starting maintenance work, make sure that the pipes are not under pressure.
7.2.
MAINTENANCE
To perform maintenance properly, the following are recommended:
Periodic inspection of the valve and its components.
Keeping an operational record of each valve, nothing any problems.
Always having spare replacement seals in stock.
During maintenance, pay special attention to the hazard warnings indicated in this manual.
The valve and the pipes must never be under pressure during maintenance.
During maintenance, the valve must never be hot.
Burn hazard!
7.2.1.
Seal maintenance
CHANGING SEALS
Preventive maintenance
Replace every 12 months
Maintenance after a leak
Replace at the end of the process
Planned maintenance
Regularly check for the absence of leaks and smooth operation of the
valve
Keep a valve log
Use statistics to plan inspections
Lubrication
During assembly, apply lubricants that are compatible with the seal
material. See the table below
SEAL COMPONENT
LUBRICANT
Clase NLGI DIN
51818
HNBR/ FPM
Klübersynth UH 1 64-2403
3
EPDM/ HNBR/ FPM
PARALIQ GTE 703
3
The period between each preventive maintenance service will vary depending on the working conditions to
which the valve is subject: temperature, pressure, number of operations per day, type of cleaning
solutions used, etc.
