Quincy Compressor Industrial Series Instruction Manual page 22

WARNING !
WARNING !
DANGER !
Industrial / Air Master Series
50161-105, March 2008
Excessive compressor RPM's (speed) could cause a pulley or sheave
to shatter. In an instant, the pulley or sheave could separate into
fragments capable of penetrating the belt guard and causing bodily
harm or death. Do not operate the compressor above the recom-
mended RPM (refer to SECTION 2, Specifications).
Guards
All mechanical action or motion is hazardous in varying degrees and needs to
be guarded. Guards should be designed to achieve the required degree of
protection and still allow full air flow from the compressor sheave across the
unit. Guards shall be in compliance with OSHA safety and health standards 29
CFR 1910.219 in OSHA manual 2206 and any state or local codes.
Guards must be fastened in place before starting the compressor
and never removed before cutting off and locking out the main
power supply.
Check Valves
Check valves are designed to prevent back-flow of air pressure in the com-
pressed air system (air flows freely in one direction only). The check valve must
be properly sized for air flow and temperature. Do not rely upon a check
valve to isolate a compressor from a pressurized tank or compressed
air delivery system during maintenance procedures!
Manual Shutoff Valves
Manual shutoff valves block the flow of air pressure in either direction. This
type of valve can be used to isolate a compressor from a pressurized system,
provided the system is equipped with a pressure relief valve capable of being
manually released. The pressure relief valve should be installed between the
manual shutoff valve and the compressor (refer to Fig. 3-8, Typical Drop Leg
& Component Location).
Pressure Relief Valves
Pressure relief valves aid in preventing system failures by relieving system
pressure when compressed air reaches a determined level. They are available
in various pressure settings to accommodate a range of applications. Pressure
relief valves are preset by the manufacturer and under no circumstances
should the setting be changed by anyone other than the manufacturer.
Pressure relief valves are designed to protect compressed air
systems in accordance with ASME B19 safety standards. Failure to
provide properly sized pressure relief valves may cause property
damage, severe personal injury or even death.
Pressure Switch
The pressure switch detects the demand for compressed air and allows the
motor to start. When the demand is satisfied, the unit stops. Pressure switches
provided by Quincy Compressor are pre-set at the factory and usually do not
require adjustment.
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Quincy Compressor
3501 Wismann Lane, Quincy Ill. - 62305-3116