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Inline Sight Glass
Operating Instructions
27
10. Malfunction, Cause, Remedy
WARNING
If the measures described here do not have the desired result, please contact a
specialist or Armaturenwerk Hötensleben GmbH.
Malfunction
Cause
Remedy
Inline sight glass is leaking
Seal faulty or missing
Replace seal
Hexagonal nut not fully tightened Tighten nuts fully in a criss-cross
pattern
Glass has broken
Pressure surge/water hammer
Replace glass cylinder Avoid
pressure surges/water hammer
Temperature changed too rapidly Replace glass cylinder Avoid
rapid temperature changes
Seals faulty or forgotten
Replace glass cylinder and seals
Glass is cloudy
Abrasive media
Replace glass cylinder
Unsuitable media or cleaning
agents
Replace glass cylinder