instructions manual
for use and maintenance of the combined groups for the GARDA / LEDRA series
7.7 REPLACING THE SCREW NUT
1) Remove the outer screw nut flange by loosening the relevant screws;
2) Loosen the screws fastening the screw nut to the support;
3) Remove the screw nut to be replaced by extracting it from the support;
4) Insert the new screw nut;
5) Tighten the screws fastening the screw nut to the support;
6) Attach the external flange to the screw nut;
7) Tighten the screws of the external screw nut flange;
7.8 REPLACING THE SCREW NUT SUPPORT
1) Remove the front cover "75" by loosening the relevant screws;
2) Loosen the screws of the support fastening the centrifugal pump to the gearbox;
3) Use two screws to remove the centrifugal pump and place it on the work bench;
4) Loosen the screws fastening the screw nut to the support;
5) Remove the screw nut, along with the external flange, by extracting it from the support;
6) Unscrew the self-locking nut;
7) Remove the impeller from the shaft of the centrifugal pump;
8) Remove the key;
7.9 PERIODIC MAINTENANCE
MAINTENANCE
TO BE PERFORMED
Check the oil level in the Garda /
Ledra gearbox.
Wash the gearbox
Change the oil in the gearbox
8 - PUTTING OUT OF SERVICE AND DEMOLITION
Before demolishing the combined group, the following materials must be separated:
• lubricating oil;
• rubber and plastic parts;
• cast iron and steel parts;
and disposed of correctly.
Do not dispose of the combined group into the environment.
For disposal of the lubricating oil make use of specialised treatment services.
p. 32
METHODOLOGY
OF EXECUTION
Use the oil level plug
7.1 Washing the gearbox
Open the oil drain plug, close it and
introduce new oil through the oil
filling plug
COMBINED GROUP GARDA / LEDRA
Setting the pace since 1953
FREQUENCY
Once a month
Once a year
Every 300 hours of actual work