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GESTRA UNA 38 - Page 19

GESTRA UNA 38
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19
The torques required for tightening threaded
connections vary depending on the type of
equipment and connection.
Designation
Torque [Nm]
UNA 38
UNA 39
Set screws
20
20
Hex nuts on set screws
270
340
Allen screws on control
unit
40
Regulating nut
120
Bimetallic vent
90
Manual vent valve
70
170
Manual lifting lever
110
Screw plug
110
Drainage screw plug
70
170
Malfunctions may occur if the equipment is
used with different types of condensate:
The following condensates in particular
cause problems:
very oily condensates
condensates that resinify or become
gummy
condensates that recrystallize
condensates that contain solid matter.
In these cases check the equipment at
regular intervals for contamination and, if
necessary, remove dirt deposits.
To reduce contamination we recommend
installing a sedimen
tation vessel or a dirt
pocket arrangement upstream of the
equipment.
Normally you do not have to clean the internal parts
of the equipment.
To clean the equipment completely take off the
cover and remove the control unit.