Service And Maintenance; 7�1 - Chain Adjusment; 7�2 - Lubricant And Oil Change; 7�3 - Lubricant Selection - VALMETAL STATIONARY UNROLLER Operator And Parts Manual

7 - Service and maintenance

7.1 - Chain adjusment
1� Make sure that the adjusting bolts at the idler end are tightened
equally�
2� Start the motor and verify that the chain fits well in the sprocket
teeth�
3� If an adjustment is necessary TURN OFF THE MOTOR AND
LOCK OUT POWER SOURCE, then do the required adjust-
ments� Verify the adjusting bolts on the idler end�
4� Tighten all bolts�
When tightening the chain allow it to run at least a full chain re-
volution to determine if additional adjustments are required� Check
tension while machine is loaded� Check frequently during the first
10 hours of operation� Check periodically afterwards�
It takes many hours of running, under full load, for the chain and
gear box to reach their highest efficiency� They may, if necessary, be
put to work under full load immediately� However, to maximize the
lifetime of the machine, it is recommended to run it under gradually
increasing loads and to reach a full load only after about 20 hours�
7.2 - Lubricant and oil change
1� Check oil in gearbox regularly�
2� Grease all bearings monthly�
3� After 100 hours of running, a new worm gear unit should be
drained, flushed and refilled with proper oil�
4� Oil should be changed at least every 2500 operating hours or
every 6 months, whichever occurs first� Never mix 2 diffe-
rent types of oil. Be sure to drain and wash before
using another type of oil�
Room
Temperature (°C)
from -30°C to 0°C
from 70°C to 100°C
from 0°C to 25°C Lower than 70°C to 100°C
More than 25°C Lower than 70°C to 100°C
LUBRICANT TABLE
Operation
GRADE
Temperature (°C)
Lower than 70° 80W90
80W110
80W110
80W140
13C50-0149-R5 - Stationary Unroller 60" & 72" - October 2021
7.3 - Lubricant selection
Lubricating oil must have a viscosity sufficient to reduce friction and
allow the speed reducer to operate smoothly under high load and
impact� Consult table below for the choice of lubricant�
Where a wide temperature range is expected, the synthetic oil
EXXON SHC 629 is recommended�
Please keep in touch with our engineering department, especially
when operating reducers under special conditions such as high or
low speed, high temperature or heavy loads�
TEXACO SHELL
Meropa 150 Omala 150
Meropa 320 Omala 320
Meropa 320 Omala 320
Meropa 460 Omala 460
EXXON
Spartan EP 150 SHC 629
Spartan 320 SHC 629
Spartan 320 SHC 629
Spartan 460 SHC 629
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