BE Pressure supply 80 Gallon Enclosed Rotary Screw Compressor AC1080SQ - Manual (Page 19)

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Manual Relief And Shutoff Valves
Install a manual relief valve to vent the compressor to atmosphere. In
those instances where the air receiver tank services a single compressor,
the manual relief valve can be installed on the receiver. When a manual
shut- off valve, and a safety relief valve installed upstream from the
manual relief valve. These valves are to be designed and installed as to
permit maintenance to be performed in a safe manner. Never substitute
a check valve for a manual shut-off valve (block valve) if the purpose is to
isolate the compressor from a system for servicing.
Guards
All mechanical action or motion is hazardous in varying degrees and
needs to be guarded. Guarding shall be in compliance with OSHA Safety
and Health Standards 29 CFR 1910.219 in OSHA manual 2206 and any
state or local code.
Drives
It is important that the compressor and motor pulleys are aligned properly
and the V belt is correctly tensioned. Improper pulley alignment and
belt tension are causes for motor overloading, excessive vibration, and
premature belt and/or bearing failure.
CAUTION
Guards must be fastened in place before starting the compressor and never
removed before cutting off and locking out the main power supply.
CAUTION
Excessive speed of the compressor or driver can be lethal. Never operate
the compressor beyond the manufacturer’s recommendation. Bursting of the
flywheel may be the greatest threat because the normal guard may not contain
all the pieces. Crankshaft and connecting rod breakage is a possibility and
compressor efficiency, valve life and bearing life will be abnormally reduced.
guidelines