Instruction Manual
Page 16 of 20
Issue: 3.5
H:\SERVICE MANUALS\FLUID HANDLING\AGITATORS\Agitator Rotary Unit Electric Nord R3.5.doc
Maintenance – Gearbox
Wait until the unit has cooled sufficiently after stopping and isolate
from power supply.
Oil Plugs / Ventilator
Remove the ventilator plug prior to removing level and/or drain plug.
The gearbox is supplied factory fitted with EP mineral oil (see section 1.3) only ‘top
up’ with the same type of oil and never overfill as this may cause overheating and
leakage. Check the ventilator is clean and fitted correctly.
There is no drain plug fitted to the gearbox or variator unit as the units are ‘sealed
for life’ so top up of oil is only necessary as required.
It is recommended however, to change the oil during a overhaul of the agitator
when the unit is removed from the mix tank assembly.
If changing the oil place a suitable container underneath the plug for draining.
Note: It is recommended that the oil should be slightly warm (40-50º C) to facilitate
easier draining.
After filling with fresh oil refit the ventilator, level and/or drain plugs and clean up
any oil spillage.
Lubrication
Check the oil level every 3,000 hours or 6 months top up as necessary.
Replace the oil every year as per ATEX regulations
Note: Oil replacement not required for units that are ‘
sealed for life’
.
If Synthetic oil is used (USA Gearbox) the recommendation is to replace the oil
every 3 years
Never mix different oil types.