Mechanical Operation and Maintenance Manual for ER20-1100 Industrial Robot
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4.4.2 Replacement of timing belt
Timing belts need to be replaced every three years or every 11520 operation hours.
It is noted that during the maintenance, the appearance and condition of timing belt needs
to be checked. If there is damaged, please replace the timing belt in time.
Table 4-10 The damage statistics table of timing belt
Excessive wear
Cracking
The belt teeth worn,
the rubber exposed
The belt corners worn,
the wire cores dropped
The root of belt tooth
cracked
The belt side cracked
The replacement of timing belt involves disassembly gesture of the robot, timing belt
selection, and zero position calibration after replacement. Additionally, special tools
should be used in disassembly. Therefore, potential risks exist if users disassemble them.
Please contact our service department for replacement.
4.5 Robot maintenance and working area
Figure 4-3 shows the maintenance and working area of the mechanical unit. Users can
adjust the working area according to the actual environment.
4.5.1 The safety conditions required for working area
1). Safety fence and safety door must be installed around the robot. If the safety door is
closed, operators cannot go through the safety fence and into the working area. The safety
door should be equipped with a interlock switch, safety latch, etc.. Once the safety door is
open, the robot stops working.
2). The safety carpet or photoelectric switches should be set on the floor, to ensure the
safety of operators. When operators enter into the working space of robot, alarms will be sent
from buzzers or photoelectric switches, and the robot will be stopped.
3). The height of safety fence shall not be less than 2 meters.
4.5.2 Qualification requirements for maintenance personnel and
precautions
