7-4
100-214-276 Rev. 3
Chapter 7: Maintenance
Periodic and Preventive Maintenance
7.2.3 Routine Component Replacement
The lifetime of certain parts is based on the number of cycles the unit has completed, or on hours
of operation.
lists the average number of hours or cycles one should use in determining
when components should be replaced. Ambient operating temperature also affects lifetime.
Higher temperatures reduce the number of cycles and hours before replacement is suggested.
The charts below are for equipment operating at a temperature of 72 to 75
o
F (22 - 24
o
C).
The lifetime of system pneumatic components is influenced by the quality of the compressed air
provided. All Branson systems require clean, dry, (normal) factory compressed air. When oil or
moisture is present in the compressed air, the lifetime of the pneumatic components will be
reduced. This table lists pneumatic parts with an average factory compressed air condition.
For Reference Purposes:
1) A system operating at 60 welds per minute, 8 hours per day, 5 days per week, 50 weeks per
year completes approximately 7.2 million cycles in 2000 hours.
2) The same system at 24 hours per day, 5 days per week, in 50 weeks completes 21.6 million
cycles in 6000 hours.
3) 24 hours per day, 365 days per year produces 31.5 million cycles in 8760 hours.
Please note that parts replaced during preventive maintenance constitute normal wear and tear.
They are not covered by warranty.
Table 7.1
Component Replacements Based on Cycles Run
At 20 Million Cycles
Base Palm Buttons
Air Cylinder
At 40 Million Cycles
Solenoid Valves
Pressure Regulator
Air Filter
Hydraulic snubber
Cooling Valve
S-Beam Load Cell Assembly
Encoder Assembly
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stipulated by RoHS in its current version
