Quincy QSF Series User manual

QSF™Series
Direct Drive Rotary Screw Air Compressors
Instruction Manual
This manual contains important safety information and should be made available to
all personnel who operate and/or maintain this product. Carefully read this manual
before attempting to operate or perform maintenance on this equipment.
Manual No. 55002-CB
October 1998 Edition
Updated: Septermber 2010

Quincy Compressor – QSF Series
TABLE OF CONTENTS
Section I – General Information
Standard Warranty............................................................................................................................................... 1
Safety Precautions and Warnings .....................................................................................................................2-4
Section II - Description
General Description of Quincy QSF Series Air Compressors.............................................................................. 5
The Compression Cycle....................................................................................................................................... 6
Description of Air Flow ........................................................................................................................................ 6
Description of Fluid Flow and Compressor Cooling System ...........................................................................6-7
Modulation Control Standard.............................................................................................................................. 7
Auto/Dual Standard............................................................................................................................................. 7
Electrical System Description .............................................................................................................................. 8
Indicators ............................................................................................................................................................. 9
Section III - Installation
Receiving ........................................................................................................................................................... 10
Moving the Unit to the Installation Site............................................................................................................. 10
Location ........................................................................................................................................................10-11
Piping Connections............................................................................................................................................ 12
Piping Fit-Up...................................................................................................................................................... 12
Relief Valves....................................................................................................................................................... 12
Pressure Vessels................................................................................................................................................. 13
Electrical ............................................................................................................................................................ 13
Guards ............................................................................................................................................................... 13
Manual Relief and Shutoff Valve........................................................................................................................ 14
Water and Sewer Facilities at the Installation Site (Water-cooled models only)............................................... 14
Fluid Level.......................................................................................................................................................... 15
Compressor Rotation......................................................................................................................................... 15
Fan Rotation....................................................................................................................................................... 15
Section IV – Operating Procedures
Prior To Starting................................................................................................................................................. 16
Starting the Compressor.................................................................................................................................... 16
Stopping the Compressor - Normal Operation ................................................................................................ 17
Stopping the Compressor - Emergency Operation .......................................................................................... 17
Electronic Control Operations......................................................................................................................17-22

Quincy Compressor – QSF Series
TABLE OF CONTENTS (continued)
Section V - Servicing
Preparing for Maintenance or Service ............................................................................................................... 23
Safety ................................................................................................................................................................. 23
Lubrication ......................................................................................................................................................... 24
Fluid Specifications............................................................................................................................................ 24
Fluid Life ............................................................................................................................................................ 24
Water Removal .................................................................................................................................................. 25
Understanding the Analysis Report ..............................................................................................................25-26
Fluid Parameters................................................................................................................................................ 27
Fluid Filter.......................................................................................................................................................... 28
Compressor Air/ Fluid Separator Element ........................................................................................................ 29
QGV-200 Separator Installation ....................................................................................................................... 30
Fluid Scavenging System................................................................................................................................... 31
Air Filter ............................................................................................................................................................. 32
Control Line Air Filter ........................................................................................................................................ 32
Compressor Shaft Fluid Seal ............................................................................................................................. 33
Preparation for New Seal Installation ............................................................................................................... 34
Seal Installation.................................................................................................................................................. 34
Air and Fluid Tubing.......................................................................................................................................... 35
Section VI – Service Adjustments
Differential Pilot Valve ....................................................................................................................................... 36
Water Temperature Regulating Valve ............................................................................................................... 36
Water-cooled Heat Exchangers......................................................................................................................... 37
Fluid Piping........................................................................................................................................................ 37
Assembling SEAL-LOK Fittings ......................................................................................................................... 38
Section VII - Troubleshooting
Troubleshooting ...........................................................................................................................................39-44
Section VIII – Maintenance Schedule
Maintenance Schedule ...................................................................................................................................... 45
Addendum 1 (Added 09/2010)
Shell/Tube Heat Exchanger Installation and Service Recommendations...........................................................46

Section I – General Information
Standard Warranty
Quincy Compressor® Industrial Rotary Screw Products
QSF™Compressors
Seller warrants products of its own manufacture against defects in workmanship and materials under normal use
and service, as follows:
Packaged Compressors - Twelve (12) months from date of start-up or eighteen (18) months from date of
shipment from the factory, whichever occurs first.
Airend on Packaged Compressors (service at full load pressure 150 PSIG and below) - Twenty-four (24)
months from date of start-up or thirty (30) months from date of shipment from the factory, whichever occurs first.
Five (5) and ten (10) year Extended Airend Warranties are available. See pages 40-41 for details.
Airend on Packaged Compressors (service at full-load pressure above 150 psig) - Twelve (12) months from
date of start-up or eighteen (18) months from date of shipment from the factory, whichever occurs first.
Remanufactured Airend - Twelve (12) months from date of shipment from factory.
Parts - Ninety (90) days from date of Distributor sale or twelve (12) months from date of factory shipment,
whichever occurs first.
With respect to products not manufactured by Seller, Seller will, if practical, pass along the warranty of the
original manufacturer.
Notice of the alleged defect must be given to Seller in writing with all identifying details including serial number,
model number, type of equipment and date of purchase, within thirty (30) days of the discovery of same during
the warranty period.
Seller’s sole obligation on this warranty shall be, at its option, to repair, replace or refund the purchase price of
any product or part thereof which proves to be defective. If requested by Seller, such product or part thereof
must be promptly returned to Seller, freight collect for inspection.
Seller warrants factory repaired or replaced parts of its own manufacture against defects in material and
workmanship under normal use and service for ninety (90) days or for the remainder of the warranty on the
product being repaired, whichever is longer.
This warranty shall not apply and Seller shall not be responsible or liable for:
a) Consequential, collateral or special losses or damages;
b) Equipment conditions caused by fair wear and tear, abnormal conditions of use, accident, neglect or
misuse of equipment, improper storage or damages resulting during shipment;
c) Deviation from operating instructions, specifications, or other special terms of sales;
d) Labor charges, loss or damage resulting from improper operation, maintenance or repairs made by
person(s) other than Seller or Seller’s authorized service station.
e) Improper application of product.
In no event shall Seller be liable for any claims, whether arising from breach of contract or warranty of claims of
negligence or negligent manufacture, in excess of the purchase price.
NOTICE!
This warranty is the sole warranty of seller. Any other warranties, expressed or implied, including any
warranties of merchantability or fitness for a particular use are hereby excluded.
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Section I – General Information
Safety Cautions and Warnings
Listed are some, but not all, cautions that must be observed with compressors and compressed air systems.
Failure to follow any of these warnings may result in death, serious injury, property damage and/or compressor
damage.
Air in the piping from this compressor will cause death or serious injury if used for breathing air. Additionally, air
used in food processing or packaging requires the use of food grade fluid. Air used for these processes must
meet OSHA 29 CFR 1910.134 regulations.
This compressor is designed for use in the compression of normal atmospheric air only. No other gases, vapors
or fumes should be exposed to the compressor intake or processed through the compressor.
Disconnect and lock out all power supplies to the compressor plus any remote controllers prior to servicing the
unit.
Relieve all pressure internal to the compressor prior to servicing. Do not depend on check valves to hold system
pressure.
A properly sized pressure relief valve must be installed in the discharge piping ahead (upstream) of any shut-off
valve (block valve), heat exchanger, orifice or any potential blockage point. Failure to install a relief valve could
result in the rupturing or explosion of some compressor component.
Do not change the pressure setting of the relief valve, restrict the function of the relief valve or replace the relief
valve with a plug. Over pressurization of system or compressor component can occur, resulting in death, serious
injury and property damage.
Never use plastic pipe, rubber hose or soldered joints in any part of the compressed air system. Failure to
ensure system compatibility with compressor piping is dangerously unsound.
Never use a flammable or toxic solvent for cleaning the air filter or any parts.
Do not attempt to service any part while the compressor is operating.
Do not operate the compressor at pressures in excess of its rating.
Do not remove any guards or canopy panels while the compressor is operating.
Observe gauges daily to ensure compressor is operating properly.
Follow all maintenance procedures and check all safety devices on schedule.
Never disconnect or tamper with the high air temperature (HAT) sensors.
Compressed air is dangerous, do not play with it.
Use the correct fluid at all times.
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Section I – General Information
NOTE:
Read this manual and follow all instructions prior to installing or operating this compressor.
These instructions, precautions and descriptions cover standard Quincy manufactured QSF series air
compressors.
As a service to our customers, we often modify or construct packages to the customer’s specifications.
This manual may not be appropriate in those cases.
Every effort has been taken to ensure complete and correct instructions have been included in this manual,
however, possible product updates and changes may have occurred since this printing. Quincy Compressor
reserves the right to change specifications without incurring any obligation for equipment previously or
subsequently sold. Not responsible for typographical errors.
Reference to the machine MODEL, SERIAL NUMBER and DATE OF ORIGINAL START-UP must be made in
all communication relative to parts orders or warranty claim. A model/serial number plate is located on the
frame and in the upper right corner inside of the control panel door.
SPARE PARTS ORDERING -- Quincy Compressor maintains replacement parts for Quincy compressors. A parts
manual is shipped with all new machines. Order parts from your Authorized Quincy distributor. Use only
genuine Quincy replacement parts. Failure to use genuine Quincy parts may void your warranty.
! DANGER !
Air from this compressor will cause death or serious injury if used for
breathing or food processing (if non-food grade fluid is used). Air used for
these processes must meet OSHA 29CFR1910.134 regulations or
FDA21CFR178.3570 regulations.
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Section I – General Information
IMPORTANT
Throughout this manual we have identified key hazards. The following safety alert symbols identify the level of
the hazard.
! DANGER !
Hazards or unsafe practices that will result in death or serious injury.
! WARNING !
Immediate hazards which could result in death or serious injury.
! CAUTION !
Hazards or unsafe practices which may result in minor injury or product or
property damage.
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Section II – Description
General Description of Quincy QSF Series Air Compressors
The compressor is a single stage, positive displacement, fluid-flooded helical screw type unit. The
compressor consists of two precision-machined rotors. The male rotor is driven by a gear train,
connected to motor shaft through a flexible drop out type coupling. The male rotor has four lobes that
mesh with a female rotor consisting of six flutes. Both rotors are housed in a single cast iron cylinder.
The unit has an inlet port at the power-input end and a discharge port at the opposite end.
All models use positive pressure in the reservoir to circulate fluid through the system.
All components are attached to a heavy-duty steel frame. Controls and indicators are arranged on a
control panel. Acoustical cabinets are available to reduce sound levels.
Figure 2-1
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Section II – Description
The Compression Cycle
The compression cycle of a rotary compressor is a continuous process from intake to discharge with no
reciprocating mechanisms starting and stopping as found in reciprocating compressors. The compressor
consists of two rotors in constant mesh, housed in a cylinder with two parallel adjoining bores. The male
drive rotor has four lobes that mesh with six flutes in the female rotor. All parts are machined to exacting
tolerances.
As the rotors rotate, (male-clockwise as viewed from the power-input end) air is drawn into the cylinder
through the inlet port located at the power-input end. A volume of air is trapped as the rotor lobes pass
the inlet cut off points in the cylinders. Compression occurs as the male rotor rolls into the female flute,
progressively reducing the space thereby raising the pressure. Compression continues until the lobe
and flute pass the discharge port. The compressed air is then discharged into the service line. There are
four complete compression cycles for each complete rotation of the male rotor. (Figure 2-1).
Description of Air Flow
With the compressor operating, air entering via the compressor air filter flows directly into the rotor
housing where it is compressed. Compressed air passes through the complete system then through a
minimum pressure check valve to the service connection.
Description of Fluid Flow and Compressor Cooling System
The fluid serves three functions: it lubricates the bearings, rotors, and gears; it removes heat from the air
as the air is being compressed thus lowering the compressed air discharge temperature; it also seals the
rotor clearances.
Coolers
All models use positive pressure in the reservoir to circulate fluid. Fluid is circulated through the cooler,
fluid filter, and into the compressor. In the compressor, some fluid is diverted directly through internal
passages to ensure positive lubrication of the bearings, gears and shaft seal. The remainder of the fluid
is injected into the early stage of the compression cycle to seal clearances, cool, and lubricate the rotors.
Fluid Coolers
Fluid coolers may use either air or water as a cooling medium. The following descriptions point out the
major differences between the two types of coolers.
Air-cooled Fluid Coolers
The air-cooled fluid cooler and aftercooler are of the finned aluminum tube design. Ambient air is
forced through the fins by a motor driven fan, cooling the fluid and air in the tubes. To maintain proper
compressor operation, the temperature of the ambient air should not exceed the temperatures listed in
the QSF specifications. The cooler fins must be kept clean at all times. Fluid leaving the receiver passes
through a thermal mixing valve before traveling on to the cooler. The purpose of the thermal valve is to
maintain a minimum fluid discharge temperature at the compressor of approximately 1800Fahrenheit.
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Section II – Description
Water-cooled Fluid Coolers
Water-cooled fluid coolers are of the shell and tube design. Fluid passes through the shell transferring
its heat to the water flowing through the tubes. Fluid leaving the cooler does not pass through a
thermal mixing valve as in an air-cooled unit, but goes directly to the fluid filter and the compressor.
Fluid discharge temperature at the compressor is maintained by a water temperature regulating valve
located in the discharge water line. The water temperature-regulating valve uses a probe to sense fluid
temperature and opens and closes, governing water flow through the cooler.
Aftercoolers
Air-cooled aftercoolers are furnished as standard equipment on the QSF. Water-cooled aftercoolers are
available as an option on standard QSF. Aftercoolers are used to lower the temperature of the
discharge air, thereby condensing water vapor from the compressed air. This allows most of the
contained water to be trapped and expelled from the unit, reducing water related problems
downstream.
Air-cooled aftercoolers are part of the air-cooled fluid cooler. Cooling air from the fan is blown through
the aftercooler and the fluid cooler.
Water-cooled aftercoolers are placed in series with the fluid cooler. Incoming water is first directed
through the aftercooler and then on to the fluid cooler.
A combination moisture separator and water trap is provided for collecting and expelling water to the
customer's drain.
Modulation Control Standard
As the motor starts driving the compressor rotors, air is drawn in, compressed and discharged into the
reservoir. When the air pressure in the reservoir exceeds the set point of the pilot valve (normally 100
PSIG), the valve opens and passes a controlled volume of air to the inlet valve air cylinder. The air forces
a piston to move within the cylinder, closing the inlet valve. The compressor will continue to run
matching air demand with air delivery by constantly adjusting the position of the inlet valve. The inlet
valve regulates compressor capacity between 100% and nearly 0% of rated delivery. When maximum
pressure (typically 10 PSIG above normal full load pressure) has been obtained in the air system,
complete compressor unloading occurs. The pressure transducer located in the control panel sends a
signal to the control and the solenoid valve opens, venting the residual pressure from the blowdown
valve. At the same time, control air from the reservoir check valve is directed through the solenoid to
the inlet valve air cylinder.
The inlet valve is held in a closed position, preventing the intake of air into the compressor and serving
as a check valve preventing reverse air/fluid flow through the inlet valve and air filter. See control
schematic in parts manual.
Auto/Dual Standard
The Auto/Dual system is standard on the Quincy QSF Compressor.
The control uses a programmable timer to shut the compressor down if it stays unloaded for the
programmed time period. The timer should be set during unit start up for a minimum of six (6) minutes.
During the unloaded/timing mode, if plant pressure should drop causing the electronic control to load
the compressor, the timer will reset.
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Section II – Description
! WARNING !
Never assume it is safe to work on the unit because it is not operating. It
may be in the automatic stand-by mode and may restart at any time.
Follow all safety instructions in the “Preparing for Maintenance” or
“Service” chapters.
Electrical System Description
A diagram of the electrical system is shown in the parts manual sent with the compressor. A wiring
diagram is also included in the control panel on all Quincy QSF compressors.
NOTE:
Due to continuing product improvements and updates, it is suggested that the wiring diagram
included in the control panel be used when servicing the electrical control.
NOTE:
Standard drive motors are open drip proof 1800 RPM with a maximum ambient temperature rating
of 1040F. They are not suitable for salt laden, corrosive, dirty, wet or explosive environments.
The QSF series compressors utilize 460V incoming power through a magnetic motor starter. A
transformer in the control panel reduces this voltage to 120 VAC for the various controls on the unit,
which is then reduced to 24 volt for the electronic controls. These controls include the pressure
transducer, high air temperature switch and probe, solenoid valve and the various indicator lights. Other
incoming line voltages are available as options. The compressor is provided with a NEMA 1 enclosure.
Optional panels include NEMA 4.
Air-cooled models utilize a second magnetic starter for the fluid cooler fan motor. If the fan motor
starter overload trips out for any reason, the compressor unit will shut down.
! WARNING !
High voltage could cause death or serious injury. Disconnect all power
supplies before opening the electrical enclosure or servicing.
Safety Sensors
Two high air temperature (HAT) sensors are standard on the QSF units. These sensors protect the unit
by sensing unusually high temperatures and shutting the unit down. One is located in the discharge line
from the compressor. The second sensor is located at the minimum pressure check valve. These non-
adjustable sensors are set to trip at approximately 2250F.
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Section II – Description
! WARNING !
Never remove, bypass or tamper with this HAT switch. Failure to provide
this safety feature could cause death, serious injury and/or property
damage. If the compressor is shutting down due to high discharge
temperature, contact a qualified service technician immediately.
Indicators
Main Power Light On
Indicates power from the main disconnect switch has been turned on and there is live power at the
compressor starter and control panel. This light will remain on as long as there is power to the unit.
! CAUTION !
Always check power supply disconnect. The Power-on light may be
inoperable.
High Discharge Air Temperature Light
Indicates the unit has sensed an unusually high discharge temperature.
Motor Overload Fault
Indicates excessive over amp of drive motor and fan motor if air-cooled.
Fluid Filter Change Light
This is used to determine fluid filter change intervals on the QSF, as programmed by the operator. It
also indicates excessive pressure differential across the fluid filter on the standard QSF.
Air/Fluid Separator Element Change Light
This is used to determine separator element change intervals on the QSF, as programmed by the
operator. It also indicates excessive pressure differential across the air/fluid separator element on the
standard QSF.
Air Intake Filter Change Light
This indicator signals when the filter element needs to be cleaned or replaced on the QSF.
NOTE:
Both the standard and stock versions include a programmable change interval timer on the air filter, fluid
filter and the air/fluid separator element.
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Section III – Installation
Receiving
Upon receipt of the compressor, immediately inspect the compressor for any visible damage which may
have occurred in shipment. If visible damage is found at the time of delivery, be sure the delivering
carrier makes a notation on the freight bill and request a damage report. If the shipment is accepted
and it is later found that the compressor unit has been damaged, this is classified as concealed damage.
If concealed damage is found, report it within 15 days of delivery to the delivering carrier, who must
prepare a damage report. Itemized supporting papers are essential to filing a claim.
Read the compressor nameplate to be sure the compressor is the model and size ordered and that
optionally ordered items are included.
Check the reservoir and pressure relief valves to be sure they are adequate for the pressure at which you
intend to operate.
Moving the Unit to the Installation Site
When a forklift is used to move the unit to its installation site, use forklift slots provided in one side and
one end of the main frame. Use of chains and slings should be limited to the main frame. Do not
attempt to lift the unit by attachment to any components. Optional lifting eyes are available.
NOTE:
See technical data pages for detailed technical information and dimensions.
! CAUTION !
Improper lifting can result in component of system damage or personal
injury. Follow good shop practices and safety procedures when moving the
unit.
Location
Locate the compressor on a level surface that is clean, well lit and well ventilated. Allow sufficient space
(four feet of clearance on all sides and top of the compressor) for safe and proper daily inspection and
maintenance. The entire length of the frame base must be supported. Shim where necessary but do
not use wood. Ambient temperature should not exceed 1100 F. (Failure to heed this may result in a
high air temperature shutdown.) Careful consideration of room size and shape must be done so that hot
exhaust air from the cooling fan does not recirculate within the room, causing the operating
temperatures to rise. High temperature shutdown may result. All models are intended for indoor
installation; however, it is possible, with certain modifications, to accommodate some outdoor locations.
Cabinet models are water-resistant but not water tight. Sheltering from rain, snow and freezing
temperatures is mandatory.
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Section III – Installation
! CAUTION !
This compressor should not be operated in temperatures below 32 °F or
above the limits outlined in the technical data section.
Do not locate the unit where the hot exhaust air from other compressors or heat generating equipment
may be drawn into the unit. Never restrict the flow of exhaust air from the fluid cooler. The heated
exhaust air must be exhausted to the outside to prevent high ambient conditions in the room. If the
room is not properly ventilated, the compressor operating temperatures will increase and cause the high
temperature probe to shut the unit off.
! CAUTION !
Clean, fresh air of sufficient quantity is required for proper compressor
operation.
! WARNING !
Never locate the compressor system inlet where it can ingest toxic, volatile
or corrosive vapors, air temperatures exceeding 110°F, water or extremely
dirty air. Taking in any of the above would jeopardize the performance of
the equipment or pose a health hazard to all personnel exposed to the total
compressed air system.
In high humidity areas, avoid placing the compressor in a basement or other damp locations. Control
the compressor temperatures and monitor compressor fluid for signs of water contamination. Fluid and
filter changes may need to be increased in high humidity areas. Increased operating temperatures may
be required.
! CAUTION !
Removal or modification of sound insulation will result in high sound levels
which may be hazardous to personnel.
The Quincy QSF models are essentially vibration free; however, some customers may choose to bolt the
unit to the floor to prevent the accidental breakage of piping or electrical connections as a result of
being bumped. Only use lag bolts to locate the unit. Do not pull the bolts down tight as this may,
under certain circumstances, place the frame in a twist or bind causing eventual breakage of fluid
coolers, piping and reservoirs.
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Section III – Installation
Piping Connections
Never join pipes or fittings by soldering. Lead-tin solders have low strength, a low creep limit, and may,
depending on the alloy, start melting at 360oF. Silver soldering and hard soldering are forms of brazing
and should not be confused with lead-tin soldering. Never use plastic, PVC, ABS pipe or rubber hose in
a compressed air system.
Piping Fit -up
Care must be taken to avoid assembling the piping in a strain with the compressor. Piping should line
up without having to be sprung or twisted into position. Adequate expansion loops or bends should be
installed to prevent undue stress at the compressor resulting from the changes between hot and cold
conditions. Pipe supports should be mounted independently of the compressor and anchored, as
necessary, to limit vibration and prevent expansion strains. In no case should the piping be of smaller
size than the connection on the compressor unit.
Relief Valves
Pressure relief valves are sized to protect the system. Never change the pressure setting or tamper with
the valve. Only the relief valve manufacturer or an approved representative is qualified to make such a
change.
! DANGER !
Relief valves are to protect system integrity in accordance with ANSI/ASME
B19 safety standards. Failure to provide properly sized relief valves will
result in death or serious injury.
Relief valves are to be placed ahead of any potential blockage point, which includes, but is not limited
to, such components as shut-off valves, heat exchangers and discharge silencers. Ideally, the relief valve
should be threaded directly into the pressure point it is sensing, not connected with tubing or pipe and
pointed away from any personnel. Always direct discharge from relief valves to a safe area away from
personnel.
Relief Valve
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Section III – Installation
Pressure Vessels
Air receiver tanks should be in accordance with ASME Boiler and Pressure Vessel Code Section VIII.
! WARNING !
ASME coded 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
will cause death.
Electrical
Before installation, the electrical supply should be checked for adequate wire size and capacity. During
installation, a suitable fused disconnect switch or circuit breaker should be provided. Where a 3-phase
motor is used to drive a compressor, any unreasonable voltage unbalance (5%) between the legs must
be eliminated and any low voltage corrected to prevent excessive current draw. The installation, electric
motor, wiring and all electrical controls must be in accordance with National Electric Code, and all state
and local codes. A qualified electrician should perform all electrical work. This unit must be grounded
in accordance with applicable codes. See control panel for the proper wiring diagram.
Quincy would like to emphasize the importance of providing adequate grounding for air compressors.
The common practice of grounding units to building structure steel may not actually provide adequate
grounding protection, as paint and corrosion build-up may exist.
! CAUTION !
NEMA electrical enclosures and components must be appropriate to the
area in which they are installed.
Pneumatic Circuit Breakers or Velocity Fuses
The Occupational Safety and Health Act, Section 1926.303 Paragraph 7 published in Code of Federal
Regulations 29 CFR 1920.1 revised July 1, 1982, states "all hoses exceeding 1/2" inside diameter shall
have a safety device at the source of supply or branch line to reduce pressure in case of a hose failure."
These pneumatic safety devices are designed to prevent hoses from whipping, which could result in a
serious or fatal accident.
Guards
All mechanical action or motion is hazardous in varying degrees and needs to be guarded. Guarding
shall comply with OSHA Safety and Health Standards 29 CFR 1910.219 in OSHA manual 2206 Revised
November 7, 1978 and any state or local codes.
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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.
! CAUTION !
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.
! WARNING !
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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Section III – Installation
Fluid Level
The compressor is filled at the factory with the correct amount of fluid. A fluid tag is provided with the
information concerning the initial fill of fluid. Fluid level is monitored by sight glass while in operation.
Fluid level should be between the maximum and minimum level while in operation. DO NOT OVER
FILL. The fluid level should be maintained in the run zone.
Fluid Level Sight Gauge
Compressor Rotation
The compressor rotation must be checked prior to start-up. Proper rotation is counter-clockwise as
viewed from the power-input end. The power-input end of the compressor is marked with an arrow
noting the proper rotation. Failure to operate the compressor in correct rotation will result in extreme
damage to the compressor and warranty coverage will be voided. Briefly jog the starter button allowing
the motor to turn 2 or 3 revolutions. Observe the drive element for correct direction. If incorrect
rotation is observed, lock out power supply, reverse electrical leads L1and L3at the motor starter. Re-
check for correct rotation.
NOTE:
Operating more than one second in reverse rotation may cause damage to the airend.
Fan Rotation (Air-cooled only)
After checking the compressor rotation, also check the fan rotation. Fan airflow should be outward, that
is, pushing the air through the coolers.
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Section I V– Operating Procedures
! CAUTION !
Provisions should be made to have the instruction manual readily available
to the operator and maintenance personnel. If, for any reason, any parts of
the manual become illegible or if the manual is lost, have it replaced
immediately. The instruction manual should be read periodically to refresh
one’s memory. This may prevent a serious accident.
Prior to Starting
Before starting the unit, review Sections II and III of this manual and be certain that all installation
requirements have been met and that the purpose and use of each of the controls, warnings are
thoroughly understood. The following checklist shall be adhered to before placing the compressor into
operation:
Remove all loose items and tools from around the compressor installation.
•Check fluid level in the air/fluid reservoir. See Lubrication Section.
•Check the fan and fan mounting for tightness.
•Manually rotate the compressor through enough revolutions to be certain there are no mechanical
interferences.
•Check all pressure connections for tightness.
•Check to make sure all relief valves are in place.
•Check to make sure all panels and guards are in place and securely mounted.
•Check fuses, circuit breakers and thermal overloads for proper size.
•After all the above conditions have been satisfied, close the main power disconnect switch, jog the
starter switch button to check the rotational direction of the compressor. The compressor must
rotate counter-clockwise when facing the compressor from the shaft end. Check the fan rotation, air
flows through the coolers.
•Water-cooled models - Check inlet and discharge water piping for proper connections.
NOTE: The water temperature-regulating valve is located in the discharge water line.
NOTE:
Please read detailed instructions in Section III prior to startup. Failure to follow instructions may
void the warranty.
Starting the Compressor
•Open the service valve to the plant air distribution system.
•Select the mode of operation and start the compressor.
•Watch for excessive vibration, unusual noises or air/fluid leaks. If anything unusual develops, stop
the compressor immediately and correct the condition.
•Control settings have been adjusted at the factory; however, they should be checked during start-up
and readjusted, if necessary. Some applications may require a slightly different setting than those
provided by the factory. Refer to the Service Adjustment Section VII. Never increase air pressure
settings beyond factory specifications.
•Adjust the water temperature regulating valve to maintain 180oF discharge air temperature (water-
cooled units only).
•Observe compressor operation closely for the first hour of operation and frequently for the next
seven hours. Stop and correct any noted problems.
Quincy Compressor – QSF Series
16