Perrot Hydra D-H-TC, Maintenance And Operating Instructions, Page: 14 / 16

TDP078e.doc Rev. 30.11.2016 Page 14 / 16
Perrot REGNERBAU CALW GmbH Industriestraße 19 ‐ 29 / D ‐ 75382 Althengstett / Germany
Phone: 0049 ‐ 7051 ‐ 162 ‐ 0 / Fax: 0049 ‐ 7051 ‐ 162–133
E ‐ mail: perrot@perrot.de / E ‐ mail Technical Department: technik@perrot.de
8 Maintenance

After applying sand to the sprinkler location, check to make sure that there is not too
much sand in the space between the sprinkler head cover with sod cup and cover
with sod cup. If necessary, clean with a wet vacuum cleaner.
9 Troubleshooting
Malfunctions
Problem Cause Remedy
Stop valve fails to close
completely
Bits of dirt between sealing plate
and stop valve.
Clean stop valve seat and
sealing plate
Rotary speed too low / too high
or does not rotate at all
Inlet nozzle incorrectly set (see
chapter 7)
Set inlet nozzle to correct
nozzle diameter
Turbine blocked by stones or bits
of dirt
Clean turbine
Inlet nozzle or filter have worked
loose
Clip parts together again
Output pressure at sprinkler
nozzle too low or casting range
too short
Stones and bits of dirt are
hindering an unimpeded flow ‐
through of water
Clean stop valve and flush
sprinkler
Subject to change without prior notice.