Service - Danfoss PAHT Operation, Installation, And Maintenance Manual

Operation guide
9.

Service

© Danfoss | 2023.12
Installation, Operation and Maintenance Manual for PAHT 20-90 pumps
Danfoss PAHT pumps are designed for long
periods of service-free operation to ensure
low maintenance and life cycle costs. Provided
that the pump is installed and operated
according to Danfoss specifications, Danfoss
PAHT pumps typically run 8,000 hours between
service. However, the service schedule for your
Danfoss PAHT pump may vary according to the
application and other factors.
The life of a pump may be greatly shortened if
Danfoss recommendations concerning system
design and operation are not followed.
In our experience, poor filtration is the
number one cause of pump damage.
Other factors that affect pump performance and
lifetime include:
• running the pump at speeds outside
specifications
• supplying the pump with water at
temperatures higher than recommended
• running the pump at inlet pressures
outside specifications
• running the pump at outlet pressures
outside the specifications.
We recommend that you inspect your pump
after 8,000 hours of operation even if it is
running without any noticeable problems.
Replace any worn parts if necessary, including
pistons and shaft seals, to keep your pump
running efficiently and to prevent breakdown. If
worn parts are not replaced, then our guidelines
recommend more frequent inspection.
If the recommendations in the manual are
not followed, Danfoss reserves the right to
void the warranty.
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