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UTD.123.2019-10.00_EN
Maintenance procedures to be adopted:
–
LOTO
(Lockout/Tagout): è necessario adottare la procedura di disconnessione della macchina
(segregazione elettrica e meccanica).
– HOT Works: hot fitting of components (ex. to the shaft end) can absolutely only be made in certified safe
areas.
Do not weld
anything to the reducer/gearmotor as this can damage gear pairs, bearings, oil seals. Do not
use the housing to ground welding equipment.
Maintenance technicians must wear appropriate work apparel (antistatic clothing, gloves, etc.).
Stop the machine and isolate the power supply to ensure there will be no accidental starts in the
following circumstances:
a) when maintaining labyrinth seals and greaser;
b) when maintaining bearings with separate lubrication of the backstop device;
c) control of:
– cleaning of external surfaces and air passages of gear reducer or gearmotor;
– oil level;
– visible checks for oil deterioration (metal parts, water, sludge, etc.);
– correct tightening of fastening screws (feet, flange), shrink disc, hub clamp, if any (see 9.2) and of
electrical bonding;
– cleanliness of filter and functionality of valve of filler plug;
d) lubricant leak;
e) critical threshald of eventual safety devices has been exceeded.
For gear reducers with level plug or equivalent system (plug for flowing over level, plug with dipstick) verify
that oil level has not lowered.
For gear reducers without level plug, check for oil leaks (dripping, oil spots, etc.) with the machine
running and at rest.
In case of lubricant leak, before commissioning again the gear reducer or gearmotor:
– collect the a.m. lubricant and dispose of it according to the law in force;
– identify the cause of leak (if necessary, consult Rossi).
– ripristinare il livello o la quantità richiesta.
In presence of dusty environment pre-arrange an dequate maintenance plan so that the thickness
of dust laying on gear reducer or gearmotor surface is reduced to a minimum and never exceeding 5
mm.
For this operation use antistatic materials.
Be sure that the safety and control devices are effective.
Attention!
After a running period, even if thermal range is not achieved, gear reducer is subject to a light
internal overpressure which may cause burning liquid discharge. Therefore, before loosening whichever
plug wait until gear reducer has become cold; if not possible, take the necessary protection measures
against burning due to warm oil contact. In all cases, always proceed with great care.
Maximum oil temperatures indicated in lubrication table (see ch 8.2) do not represent a hindrance to the
gear reducer regular running.
All bolts which may be damaged during assembling and disassembling operations are to be replaced with
new ones having equivalent specifications and resistance class.
Occasional maintenance
such as replacement of gear pairs, bearings, etc. must
only be done by qualified
Rossi technicians
. We recommend to purchase spare parts and accessories from Rossi.
Rossi undertakes and grants no responsibility or guarantee for any damages and/or malfunctions arising
from the use of non-original Rossi spare parts and/or accessories.
In case of long rest periods, the gear reducer must be committed for a shor time every 3 weeks; for rest
periods longer than 6 months the gear reducer must be treated adequately for the conservation: consult
Rossi.
When dismounting the cap (whenever gear reducers are provided with it or with a protection cap), reset the
sealing with adhesive on cleaned and degreased mating surfaces.
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