WGR
– Worm Gear Reducer
Instruction and operating manual
© Copyright by BIFFI Italia. All right reserved
MAN 684/Rev 5 Page
11
4.2
Checks to be carried out on receipt of the WGR reducer
Carefully remove the reducer from its shipping carton or skid. Check that the worm gearbox has not been
damaged during transport. If damaged, immediately report the damage to the transport company.
First of all check whether the information on the nameplate (Model, Nominal torque, Degree of protection,…)
correspond to the order acknowledgement data.
If the actuator and WGR are already assembled onto the valve, the setting of the mechanical stops and of the
electric end of travel has already been done in-house.
If the actuator and WGR are shipped separately from the valve, the setting of the mechanical stops and of the
electric end of travel must be checked and, if necessary, carried out while assembling the actuator and the
gearbox onto the valve.
Check that the fitted accessories comply with those listed in the order acknowledgement and the delivery note.
4.3
Storage Procedure
Important
Please make sure you stick to the following storage procedure to maintain top
WGR integrity during storage; failure to comply with the recommended procedure
will invalidate the warranty.
The worm gearboxes leave the factory in excellent working conditions and with an excellent finish (these
conditions are guaranteed by an individual inspection); in order to maintain these characteristics until installation
on the plant, it is necessary to observe a few rules and take appropriate measures during the storage period.
Store in a well-ventilated, protected, dry room.
Store the gearboxes on wooden skids or shelves to protect the machined mounting flange.
If the WGRs are supplied separately from the valves, they must be placed onto a wooden pallet. In case of
long-term storage (over six months), the worm gearboxes must be covered and protected from dust and dirt,
and it is necessary to apply a suitable corrosion protection agent to bare surfaces, particularly the output drive
parts and mounting surfaces.
In case of long-term storage, it is advisable to keep the worm gearboxes in a clean, dry place in order to
provide at least some means of weather protection.
If the gearboxes must be stored outside, they must be adequately protected (for example covered in
polyethylene protection with silica gel crystals to absorb moisture).
For the storage of the Electric Actuator supplied together with the worm gearbox, please refer to the storage
instructions included in the actuator’s IOM (MAN 618).
