HEROSE 08411, Operating Instructions Manual, Page: 29 / 80

Operating instructions
herose.com
23
7.2.1 Inspection and maintenance intervals
Recommended intervals
Description Interval Scope
Inspection  During start-up
 Visual inspection
 of the valve for damage;
 of the valving marking for
legibility;
 Installation position;
 Leak-tightness
 Between cover and body.
Cleaning  According to level of
soiling
 Cleaning of filter element and cover
Maintenance  Annually
 Cleaning of all individual parts
including visual inspection.
External inspection  Every 2 years
 Maintenance and tightness test;
Internal inspection  Every 5 years
 Replacement of all sealing and filter
elements, including maintenance
and tightness test.
Hydraulic test  Every 10 years
 Replacement of all sealing and filter
elements, including cleaning of all
individual parts, leak and pressure
test, and inspection.
7.3 Fault table
Fault Cause Remedial action
 Low flow rate
Strainer dirty  Clean / replace screen
Blockage in the pipework
system
 Check pipework system
 Leak between cover
and body
Cover loose  Retighten bolts
Seal damaged  Replace seal
 Body leaking
Discontinuity/gas cavity open  Replace the body
7.4 Spare parts
We require the following details for your spare part orders:

article no. of the spare part package,
 desired delivery quantity,
 dispatch and delivery address,
 desired method of dispatch.
7.5 Returns / complaints
Use the Service form in case of returns/complaints.
Contact in case of service:
Herose.com › Service › Product service › Complaints
E-mail: service@herose.com
Fax: +49 4531 509 – 9285