9.
Maintenance
9.1.
General references
After commissioning, check gearbox for damage to paint finish.
Do a thorough touch-up to prevent corrosion.
Original paint in small quantities can be supplied by AUMA.
AUMA gearboxes require only very little maintenance.
To ensure that the gearbox is always ready to operate, we recommend -
provided that on an average not more than 10 operations are performed per
year - the following measures:
.
Approximately six months after commissioning and then every year check
screws between multi-turn actuator, gearbox, and valve for tightness. If
required, tighten applying the torques given in table 2 (page 8).
.
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 gearboxes with output drive type A: at intervals of approx. 6 months
from commissioning, press in Lithium soap EP multi-purpose grease on
mineral oil base at the grease nipple with grease gun.
Seals:
The seals must be changed when changing the grease.
Seal kits may be obtained from AUMA.
Grease:
A grease and seal change is recommended after the following operation
times:
.
if operated seldom, after 10 – 12 years
.
if operated frequently, after 6 – 8 years
.
Only original AUMA grease must be used.
.
For the grease type, refer to the name plate: Standard F4
.
Lubricants should not be mixed.
The removed lubricant and the cleaning agent used must be
disposed of according to the relevant regulations.
13
Multi-turn gearbox GSTI 25.1 – GSTI 40.1 qualified for use in nuclear power plants
Operation instructions
(Inside and Outside Containment)
GSTI
25.1
30.1
35.1
40.1
Qty
dm³
6.3
12.1
22.0
27.0
Weight
1)
kg
5.7
11.0
20.0
24.3
1)
for
ρ
= approx. 0.9 kg/dm
3
Table 3: Grease quantities for spur gearboxes
