QT/QTS Series
Quincy Compressor
2022208700, September 2018
29
Pressure Vessels
Air receiver tanks and other pressure containing vessels such as
(but not
limited to)
pulsation bottles, heat exchangers, moisture separators and traps,
must be in accordance with ASME Boiler and Pressure Vessel Code Section
VIII and ANSI B19.3 safety stan dards. They must be equipped with a properly
sized pressure relief valve, pressure gauge, tank drain, & manual shutoff valve
(refer to
Fig. 3-17, Typical Drop Leg & Component Location
).
Follow ASME code for air receiver tanks and other pressure
containing vessels. Pressure vessels must not be modified, welded,
repaired, reworked or subjected to operating conditions outside
the nameplate ratings. Such actions will negate code status, affect
insurance status and may cause property damage, severe injury or
even death. Always replace worn, cracked or damaged tanks.
A drain valve must be located in the bottom of the air receiver to allow for
moisture drainage. An auto matic drain valve is recommended. Extend piping
away from the unit and any personnel in the immediate area to provide safe
and convenient removal of excess moisture.
If the air receiver is going to be subject to temperatures of 32°F or below,
provisions must be made to guard against freezing of the pressure relief valves,
check valves, pressure gauge, and moisture drain.
Condensation
Rust can form inside the crankcase and on internal com ponents as a result of
condensation. A compressor must operate long enough during each run cycle
to reach full operating temperature in order to reduce the risk of condensation.
Lubricant that appears milky on the dipstick may have mixed with
condensate. Failure to replace contaminated lubricant will result
in damage to the compressor and may void warranty.
Condensation can also form in the air tank of your com pressor. When this
happens, a mixture of air and mois ture will be expelled through the service
valve and into what ever is connected to the valve (e.g. air hoses, metal air lines,
pneumatic tools, spray guns). An in-line filter or dryer, available from your
local Quincy distributor, may be re quired to eliminate
the moisture.
Condensation in the air tank can be kept to a mini mum
by draining the tank on a daily basis. This also reduces
the risk of rust developing and weak ening the tank.
Manual Tank Drain Valve Operation
The manual tank drain valve is located on the underside
of the air tank. Some tanks use an internal drain tube
(Refer to
Fig. 3-18, Internal Drain Tube
) to drain the
moisture. Tank pressure is required to force moisture out
WARNING !
CAUTION !
Fig. 3-18 Internal Drain Tube