Page
7
of
12
Protection tube for rising valve stem
For metal tubes, seal the thread of the stem protection tube with Teflon tape, or thread sealing
material.
Screw protection tube (2) into gearbox thread and tighten it firmly.
Push down the sealing (3) to the housing.
Check whether cap (1) is available and without damage.
Note: Thread adapters may be involved when using stem tubes made of metal or plastic
depending on scope of supply.
5. Operation of Valves
The maximum output torque (refer to name plate on gearbox) refers to the peak values and should not be
applied over the whole travel.
Clockwise rotation at input shaft results in clockwise rotation at output drive
Enclosure protection IP67
Inspection
AUMA gearboxes in enclosure protection IP 67 undergo 100% testing for tightness in the factory.
The enclosure protection IP 67 refers to the interior of the gearbox.
Use suitable sealing material between valve flange and gearbox.
6. Maintenance
General references
After commissioning, check gearbox for damage to paint finish.
Do a thorough touch-up to prevent corrosion.
Original touch up paint in small quantities can be purchased from AUMA.
AUMA gearboxes require very little maintenance.
Approximately six months after commissioning and then every year check bolts between gearbox
and valve for tightness. If required, tighten applying the torques given in table 1.
Perform a test run as well as a visual inspection for grease leakage every six months. Carry out a
detailed functional test for each gearbox every 5 years. Record the results for future reference.
For gearboxes permanently exposed to ambient temperatures above 40 °C, maintenance must
be performed at shorter intervals.
For GK gearboxes with output drive type A: At intervals of approx. six months from
commissioning, press in Lithium soap EP multi-purpose grease on mineral oil base at the grease
nipple with a grease gun. Capacity approximately 1.5oz).
