Inward Monitoring
Please check directly after delivery the device for any transport damages and deficiencies.
Additional with reference to the accompanying delivery note the number of parts must be
checked.
Claims for replacement or goods which relate to transport damage can only be considered
valid if the delivery company is notified without delay.
Mounting instructions
General information:
•
Only carry out installation and maintenance work when the unit is depressurised
and has cooled down.
•
The installation position is horizontal or vertical with flow from bottom to top.
•
Piping, tank and sightglass frame must be free from contamination.
•
The assembly must be stabil without the sightglass frame, as this must not be used
to stabilise the piping
•
It is essential to protect the sealing surfaces of the base flange from damage (e.g.
during welding work).
Flanges:
•
Piping flanges must be plane-parallel and concentric
•
Flange size and design of the sealing surface must match the flow sight glass
•
Distance of the pipe flanges: Overall length of the flow sight glass + double the
gasket thickness.
•
The connecting screws must be tightened crosswise, gradually and evenly.
•
Torques depend primarily on the gasket material used.
Seals:
•
Place the new gasket and the sight glass exactly centrically on the lower gasket.
•
The inscription on the gasket must face outwards.
•
The gasket must not protrude into the inner diameter DN.
•
Contact between the sight glass and the flange is not permissible, as this can
damage the sight glass due to different expansion coefficients.
•
Place the upper gasket and the cover flange exactly centrically on the glass tube.
DG04 Instruction manual 12/2020
page 3
