Manual Relief And Shutoff Valve; Water And Sewer Facilities At The Installation Site (Water-Cooled Models Only) - Quincy QSF Series Instruction Manual

Section III – Installation
Manual Vent and Shutoff Valve
Install a manual valve to vent the compressor and the compressor discharge line to atmosphere. In
those instances where the air receiver tank services a single compressor, the manual valve can be
installed in the receiver. When a manual shut-off valve (block valve) is used, a manual valve should be
installed upstream from the valve, and a pressure relief valve installed upstream from the manual vent
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.
Removal or painting over safety labels will result in uninformed conditions.
This could result in personal injury or property damage. Warning signs and
labels shall be provided with enough light to read, conspicuously located
and maintained for legibility. Do not remove any warning, caution or
instructional material attached.

Water and Sewer Facilities at the Installation Site (Water-cooled models only)

Make sure the water supply is connected and open. Piping supplied by the user should be at least equal
to the connections provided on the compressor. Sewer facilities should be readily accessible to the
installation site and meet all the requirements of local sewer codes, plus those of the compressor. Make
absolutely sure water inlet and discharge connections are correct. NOTE: The water temperature-
regulating valve is located in the discharge water line. Water pressure should be 40 PSI
minimum/100 PSI maximum. Water temperature should be 50°F minimum/90°F maximum.
Clean air is essential for your Quincy QSF compressor. Always select a source providing the cleanest air
possible. When an outside air source is used, keep all piping as short and direct as possible. Use
vibration isolators and support all piping correctly. Piping size should be at least as large as the inlet
valve opening and increased several sizes for extremely long piping runs. The piping must be leak free
and absolutely clean after fabrication.
Relieve compressor and system air pressure by opening the appropriate
manual relief valve prior to servicing. Failure to relieve all system pressure
could result in death, serious injury and property damage.
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! CAUTION !
! WARNING !
Quincy Compressor – QSF Series