Maintenance and inspection
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9.2.3 Note on maintenance
9.2.3.1 Wrist unit
The motor and encoder units are provided with the wrist unit. To prevent fumes penetrating
into wrist unit, matched parts are sealed. If you have removed the wrist cover, the seal must
be replaced with Teroson Plast sealing compound (material no. 143813) (see section 10
"Recommended spare parts list" on page 77).
Fig. 9-8: Sealing wrist unit
9.3 Instructions on grease replenishment
Make sure to follow the instructions. If the following instructions are not followed, it might
cause damage to motor or gear.
NOTICE
Make sure that the plug has been removed from the grease outlet. If the plug is not
removed, grease will enter the motor or the oil seal of the gear will be damaged. This
might cause damage to the motor or gear.
Lubrication or grease replacement is only allowed at operating temperature.
Do not install a joint, hose, etc. to the grease outlet. If this instruction is not followed, the
motor will be damaged.
Avoid air getting into the gear.
Insert grease with a grease gun.
If an automatic lubricating pump is used, the grease supply pressure must be 0.3 kPa.
Set the grease injection rate to a value not higher than 8 g/s.
The limit values may not be exceeded also if a conventional grease gun is used.
In ceiling-mounted robots the grease outlet and the grease inlet are located the other
way around (related to the figures in the operating and maintenance instructions).
Cover jointing face Cover
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