Maintenance; General Information About Maintenance; Checking Change-Over Valve; Technical Data - Leser 330 Instructions De Service

Maintenance

General information about maintenance

9 Maintenance
EN
9.1 General information about maintenance
LESER Change-over Valves are maintenance-free. LESER recommends
however performing regular visual inspections. The inspection intervals must
be shortened if:
– corrosive, aggressive or abrasive media are used,
– the Change-over Valve is switched frequently.
Only trained personnel may disassemble Change-over Valves.
9.2

Checking Change-over Valve

Regularly check the following:
– Gaskets and sealing points:
– Perform function tests of the drainage, flushing and pressure gauge con-
After disassembly of the Change-over Valve, replace all gaskets.

10 Technical data

For technical data, see supplier documentation and type plate.
27
In the event of leakage, readjust the packing gland at the actuation side. To
do this, first depressurise the Change-over Valve. In the event of leakage,
replace all gaskets.
nections, the shut-off valves and other built-in components.