WGR
– Worm Gear Reducer
Instruction and operating manual
© Copyright by BIFFI Italia. All right reserved
MAN 684/Rev 5 Page
17
8
MAINTENANCE
8.1
Standard Maintenance
BIFFI worm gearboxes require no maintenance.
After commissioning and once a year, check the paint-coat of the worm gearbox. If some areas
are damaged, repair the paint-coat according to the applicable specification.
In chemically aggressive or saline environments, remove rust from surfaces and protect with a
rust preventative.
Approx. six months after commissioning and once a year, check that the nuts and bolts securing
the worm gearbox to the electric actuator and to the valve are tight, and, if necessary, re-tighten.
Approx. every 2 years visually inspect the gearbox for grease leakage. For oil lubrication type
gearboxes (WGR-DW series models) visually inspect for oil leakage approximately every year.
For severe applications or if worm gearbox operation is infrequent, perform maintenance checks
at shorter intervals.
8.2
Special Maintenance
In case of malfunction, in case of grease leaks, or in case of scheduled preventive maintenance, the
worm gearbox must be disassembled: any damaged part can be requested from BIFFI with reference
to the attached exploded view drawing and parts list.
Every spare parts request must clearly indicate the relevant gearbox Serial Number and the spare part
item number.
Special maintenance is also recommended when, during operations, the actuator generates an
excessive noise.
Important
After maintenance works, a few operations of the assembly actuator/WGR
must be done to check that movement is regular.
Important
For maintenance instructions of the Electric Actuator ICON2000 supplied
together with the worm gearbox WGR, please refer to the ICON2000 IOM
(MAN 618).
