Weh TW01 - Page 27

9�2 Maintenance intervals
Î
Inspect the WEH
®
Product at regular intervals depending on the respective operating
conditions, but at least every 3 months. After 20,000 cycles or 3 years at the latest,
depending on what happens first, starting from the date of delivery (invoice/ goods
issue date by WEH or the distributor), the WEH
®
Product must be sent to WEH for
maintenance.
These intervals can also be significantly shorter, which depends especially on your
individual application/use. Therefore, in case of abnormalities – especially during
regular inspection – send the WEH
®
Product immediately to WEH for maintenance.
If the WEH
®
Product is not regularly inspected and sent to WEH for maintenance,
leakage may occur and under certain circumstances this may result in failures and/
or accidents.
9�3 Overview of minimum intervals for inspection and maintenance
No� Inspection
Initial
(before com-
missioning
for the 1st
time)
Daily Weekly
1
Check seals for damage and dirt
accumulation
X X
2 Check exterior for damage and dirt
X X
3
Check connector and media line for leak-
age (see Chapter 7. Installation)
X X
No� Maintenance
After every
1,000 cycles
After 3 years or
20,000 cycles
*
4
Replace seals
(see Chapter 9.4.1 and Chapter 9.4.2)
X
5 Return to WEH for in-factory maintenance
X
*
whichever comes first
Note: Component arrangement see Chapter 3. Product overview / product description on
page 10.
Î
If your application requires, set shorter intervals thanindicated above. A significant
shortening of the minimum intervals is particularly necessary if abnormalities are
found during the inspections.
MD-10187-L51-R1.3.0-03
Page 27
Operating instructions
AE