Mechanical Operation and Maintenance Manual for ER20-1700 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.
During timing belt maintenance, the outside conditions of needs to be checked. If damage occurs,
replace it in time.
Table 4-9 Timing Belt Damage
Excessive wear
Cracking
worn teeth, rubber
exposed
worn corners, core
wire dropped
tooth root crack
side crack
The replacement of timing belt involves disassembly posture 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 Operation Area
Figure 4-4 shows the maintenance and operation area of the mechanical unit. Users can adjust
the operation area according to the real work environment.
1
、
The following safety conditions need to be met for operation
A safety fence and safety door must be installed around the robot. If the safety door is closed,
operators cannot enter the safety fence. The safety door should be equipped with a interlock switch,
safety latch, etc. Once the safety door is open, the robot stops operation.;
A safety carpet or photoelectric switch should be installed on the floor to send an alarm to
operators through the buzzer and the photoelectric switch and stop robot’s movement in order to
ensure the safety of operators when they enter robot’s motion range;
The height of safety fence should be no less than 2 meters;
2
、
Qualifications for maintenance personnel and precautions:
Maintenance personnel who enter the safety fence must receive professional training;
Maintenance personnel who enter robot’s working range just power off the robot and lock it.
