6
6. If additional wire runs are added to any junction box or control panel, wiring practice should
be such as to maintain prevailing electrical hazard classification.
7. High-pressure air systems are dangerous. Do not service or troubleshoot systems with air
supply on. Be sure to bleed off any trapped air before working on components since it is
possible to have high pressures trapped in airlines and cylinders, etc.
8. Keep fingers, hands, feet, etc. out of path of pneumatically operated components.
9. Safety glasses should be worn in equipment area.
10. Follow the safety regulations for your plant. ALWAYS USE GOOD JUDGEMENT!
WITHIN THE TEXT OF THIS MANUAL:
"WARNING" indicates possible injury to personnel.
"CAUTION" indicates possible damage to equipment.
"NOTE" is an informational comment.
Before you begin production AND as you continue working daily with the machine, these points
should be observed for continuous service. Service parts such as belts, stuffing box material,
bearings, gears, fill spouts, etc. are available for replacement and stock supplies through Choice
Bagging Equipment.
GROUNDING RECOMMENDATIONS AND NOISE
GROUNDING
A good grounding system is a major consideration in planning any electrical system. However, it is
essential for proper operation of the electronics that a low-impedance path to earth ground exist. All
filtering devices internal to the PLC require a good earth ground return. The structural ground
present in many industrial environments does not provide an adequate ground return. A
supplementary grounding electrode should be used to reduce the impedance of the earth ground
return when direct-wire connection to the power system is not feasible. As a minimum, a No. 12
AWG stranded copper wire should be used to connect to the copper grounding electrode. The
connection should exhibit very low DC resistance (0.05 OHM) and low high-frequency impedance
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