Quincy Compressor QSD 65040-AB User manual

QSD™Series
Oil-Free Rotary Screw Air Compressor
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. 65040-AB
January 2001 Edition

TABLE OF CONTENTS
Quincy Compressor - QSD™ 1
Standard Warranty...................................................................................................................................................... 3
Dimensional Data ....................................................................................................................................................4-5
Section I
Safety Precautions ...................................................................................................................................................... 6
Safety Alert Symbols ................................................................................................................................................. 7
Serial/Model Identification Plate ............................................................................................................................... 7
Spare Parts Ordering Information .............................................................................................................................. 7
Section II - Description
Model Identification................................................................................................................................................... 8
General Description.................................................................................................................................................... 9
The Compression Cycle and Air Flow....................................................................................................................... 9
Cooling System ........................................................................................................................................................ 10
Lubricating Fluid System ......................................................................................................................................... 10
Moisture Separator ................................................................................................................................................... 10
Capacity Control System.................................................................................................................................... 11-12
Electrical System................................................................................................................................................ 12-14
Indicators ............................................................................................................................................................ 14-15
Section III - Installation
Receiving.................................................................................................................................................................. 16
Moving the Unit to the Installation Site ................................................................................................................... 16
Location.............................................................................................................................................................. 16-17
Piping Connections ............................................................................................................................................ 17-18
Manual Shutoff Valve .............................................................................................................................................. 18
Pressure Relief Valves.............................................................................................................................................. 18
Electrical................................................................................................................................................................... 19
Guards ...................................................................................................................................................................... 19
Water and Sewer Facilities at the Installation Site............................................................................................ 19-20
Fluid Level ............................................................................................................................................................... 21
Compressor Rotation................................................................................................................................................ 21
Fan Rotation ............................................................................................................................................................. 21
Section IV - Operating Procedures
Prior To Starting....................................................................................................................................................... 22
Starting the Compressor ........................................................................................................................................... 22
Stopping the Compressor - Normal Operation......................................................................................................... 22
Stopping the Compressor - Emergency Operation .................................................................................................. 23

TABLE OF CONTENTS
2Quincy Compressor - QSD™
Section V - Maintenance or Service Preparation
Preparing for Maintenance or Service...................................................................................................................... 24
Section VI - Servicing
Safety........................................................................................................................................................................ 26
Fluid Specifications............................................................................................................................................ 26-27
Air Filter ................................................................................................................................................................... 27
Input Shaft Seal .................................................................................................................................................. 28-29
Airend Sealing System ............................................................................................................................................. 29
Section VII - Service Adjustments
Pressure Switch ........................................................................................................................................................ 30
Section VIII - Power$ync II™Operation
Introduction to Power$ync II™(version 1.04) ......................................................................................................... 32
Back-up Mode Operation ................................................................................................................................... 32-33
Single Machine Operational Mode .......................................................................................................................... 33
Multiple Machine Operational Mode................................................................................................................. 33-34
Pressure Settings ................................................................................................................................................ 34-35
Network Installation ........................................................................................................................................... 35-37
Network Voltage Tests on Power$ync II™Systems ................................................................................................ 37
Network Setup.......................................................................................................................................................... 37
Start-up ..................................................................................................................................................................... 38
Power-up Displays ............................................................................................................................................. 38-42
Start-up Displays ...................................................................................................................................................... 43
Operational Displays .......................................................................................................................................... 43-45
Compressor Settings and Maintenance Displays ............................................................................................... 45-58
Cautionary and Shutdown Displays ................................................................................................................... 59-65
Shutdown Log Messages.................................................................................................................................... 66-69
Section IX
Troubleshooting ................................................................................................................................................. 70-78
Section X
Maintenance Schedule ............................................................................................................................................. 79
Daily Operating Record
.................................................................................................................................................................................. 80

Quincy Compressor®- QSD™ 3
Seller warrants products of its own manufacture against
defects in workmanship and materials under normal use
and service, as follows:
QSD™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 - Thirty-six (36)
months from date of start-up or forty-two (42) months
from date of shipment from the factory, whichever occurs
first.
Parts - Ninety (90) days from date of Distributor sale or
one (1) year from date of factory shipment.
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.
Standard Warranty
Quincy Compressor Division
Industrial Screw Products
QSD™- Rotary Screw Air Compressors
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 nor 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.
THIS WARRANTY IS THE SOLE WARRANTY OF SELLER AND ANY OTHER WARRANTIES, EXPRESS,
IMPLIED IN LAW OR IMPLIED IN FACT, INCLUDING ANY WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR PARTICULAR USE, ARE HEREBY SPECIFICALLY EXCLUDED.

4Quincy Compressor®- QSD™
DIMENSIONAL DATA (air-cooled)
DELOOC-RIADSQ ATADTHGIEW
PH THGIEW ).SBL(
050034
57
001

Quincy Compressor®- QSD™5
DIMENSIONAL DATA (water-cooled)
DELOOC-RETAWDSQ ATADTHGIEW
PH THGIEW ).SBL(
050054
570574
0010005

Section I - General
6Quincy Compressor®- QSD™
•Safety Precautions
•Safety Alert Symbols
•Serial/Model Identification Plate
•Spare Parts Ordering Information
Safety Precautions
Read this manual and follow all instructions prior to
installing or operating this compressor.
Listed below are some, but not all, safety precautions that
must be observed with compressors and compressed air
systems.
Failure to follow any of these warnings may result in
severe personal injury, death, property damage and/
or compressor damage.
• Air from this compressor will cause severe injury or
death if used for breathing or food processing. Air
used for these processes must meet OSHA 29 CFR
1910.134 regulations.
• Disconnect and lockout all power supplies to the
compressor plus any remote controllers prior to
servicing the unit.
• Never assume it is safe to work on the compressor
because it is not operating. Many installations have
automatic start/stop controls and the compressor may
start at any time.
• 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, nor processed through the
compressor.
• 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 pressure relief valve could result in the
rupturing or explosion of some compressor
component.
• Do not change the pressure setting of the pressure
relief valve, restrict the function of the pressure relief
valve, or replace the pressure relief valve with a
plug. Over pressurization of system or compressor
components can occur, resulting in death, severe
personal injury or 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 dangerous.
• Never use a flammable or toxic solvent for cleaning
the air filter or any parts.
• Do not remove any guards or cabinet panels or
attempt to service any compressor part while the
compressor is operating.
• Do not operate the compressor at pressures in excess
of its rating.
• Observe control panel displays 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.
• Do not rely on the discharge air line check valve.
• Do not override any safety or shutdown devices.
• Keep doors closed during operation. The noise level
inside cabinet exceeds 100 decibels (dBA) and the
operating temperature of some components is
sufficient to burn the skin.
NOTICE
These instructions, precautions and descriptions
cover standard Quincy manufactured QSD™
Series air compressors.
Asa service toour customers, weoften modify or
construct packages to the customers
specifications. This manual may not be
appropriate in those cases.
NOTE
Every effort has been taken to ensure complete
andcorrectinstructionshave been includedinthis
manual, however, possible product updates and
changes may have occurred since this printing.
Quincy Compressor reserves the right to change
specificationswithoutincurringany obligation for
equipment previously or subsequently sold. Not
responsible for typographical errors.

Section I - General
Quincy Compressor®- QSD™7
Safety Alert Symbols
IMPORTANT!
Throughout this manual we have identified key
hazards. Thefollowing symbols identify the level
of hazard seriousness:
Immediate hazards which will result in severe
personal injury or death.
Hazards or unsafe practices which could result
in personal injury or death.
Hazards or unsafe practices which could result
in minor personal injury, product or property
damage.
Serial/Model Identification Plate
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 OR IN the upper right corner of the control panel
door.
Spare Parts Ordering Information
BFGoodrich, Quincy Compressor Division maintains
replacement parts for Quincy compressors. A repair parts
list is shipped with all new machines. Order parts from
your Authorized Quincy distributor. Use only genuine
Quincy replacement parts. Failure to do so may void
warranty.
!WARNING
!DANGER
!CAUTION
Air from this compressor will cause severe injury or death if used for
breathing or food processing. Air used for these processes must meet
OSHA 29 CFR 1910 OR FDA 21 XDE 178.3570 regulations.
!DANGER

Section II - Description
8Quincy Compressor®- QSD™
MODEL IDENTIFICATION

Section II - Description
Quincy Compressor®- QSD™9
• General Description
• The Compression Cycle
• Cooling System
• Lubricating Fluid System
• Moisture Separator
• Capacity Control System
• Electrical System
• Indicators
General Description
The QSD™compressor is a two-stage, positive
displacement, oil-free rotary screw unit consisting of two
precision-machined rotors per stage. The male rotor of
each stage are turned by a set of precision timing gears
which are driven by the motor through a flexible drop-out
type coupling. Both rotors (of each stage) are housed in a
single cast iron cylinder with water jackets surrounding
them.
All models are equipped with a positive displacement
fluid pump mounted to the gearbox to circulate fluid
through the bearing system and to the gear mesh. The
fluid cooler, fluid pressure relief valve, and fluid filter are
also mounted on the gearbox.
All components are attached to a heavy-duty steel frame.
Controls and indicators are arranged on a control panel.
An acoustical cabinet is included to reduce machine
sound levels.
The Compression Cycle and Air Flow
The compression cycle of the two-stage QSD™rotary
compressor is a continuous process from the intake of
stage one to the discharge of stage two. Each stage
consists of two rotors in constant mesh, housed in a
cylinder with two parallel adjoining bores. Each male
rotor has lobes that mesh with flutes in the female rotor.
The rotors are synchronized via AGMA12 timing gears.
All parts are machined to exacting tolerances.
As the rotors of stage one rotate, air is drawn into the
cylinder through the inlet port located immediately after
the air cleaner connection. 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 intercooler. The air then flows through a
moisture separator/trap assembly to remove condensate
from the cooling process. From there the air flows to the
inlet of stage two. Air inlet pressure at the stage two inlet
should be between 30 to 36 psig.
In stage two, the above compression process is repeated.
Discharge air pressure from stage two will be the
requested system pressure. From stage two the
compressed air travels through an aftercooler and a
second moisture separator/trap assembly. The
compressed air passes through a minimum pressure
check valve and into the compressed air distribution
system.

Section II - Description
10 Quincy Compressor®- QSD™
Cooling System
Water-cooled
The QSD™water-cooled cooling system is divided into
two parallel circuits.
The coolant flows from the inlet manifold through the
intercooler, into the stage one compressor jacket and
from the compressor jacket to the outlet manifold.
The second circuit flow is to the aftercooler, to the fluid
cooler located in the gearbox and finally through the
stage two compressor jackets to the outlet manifold.
The inlet coolant manifold contains a coolant flow switch
which prevents the compressor from starting if there is
inadequate coolant flow. The switch will also shut down
the compressor if there is a loss of coolant.
NOTE
If the compressor is shut down during freezing
weather, the drain plugs located at both ends on
the underside of the coolers along with the plug
on the coolant line from the fluid cooler should
beremoved. Compressedairat15-20 psig should
be injected into the system to remove the
remaining coolant.
To maintain the efficiency of the cooling system
provisions have been made for chemical cleaning of the
system.
To conserve water, an optional, normally closed solenoid
valve is available. This valve will automatically start and
stop the water flow in unison with the compressor. The
valve should be located in the inlet line to the compressor
to provide isolation of the compressor cooling system
from the supply.
Air-cooled
The QSD™air-cooled cooling system is comprised of
three separate cooling sections.
The first cooler is the intercooler, which reduces the stage
one discharge temperature. The air then passes through a
moisture separator/trap, then into stage two of the
compressor.
The stage two cooler cools the water/glycol (70/30)
mixture which is circulated through the fluid cooler and
the jackets of the compressor stages.
The third cooling process takes place in the aftercooler
which cools the discharge air from stage two, which then
passes through a moisture separator/trap assembly before
entering the distribution system.
A coolant flow switch is installed to prevent the
compressor from starting if the coolant circulating pump
fails or to shut down the compressor if there is a loss of
coolant.
NOTE
If the compressor is shut down for an extended
period and temperatures are expected to be less
than 0°F, drain system of all coolant.
A fan located below the coolers draws air through a
baffled inlet over the airend and motor, discharges it
across the coolers and exhausts it out the top and end of
the machine.
Lubricating Fluid System
Lubrication is provided by a pump located on the
gearbox. The gearbox also acts as the fluid reservoir and
supports the fluid cooler and fluid filter.
The fluid from the pump passes through a filter then to
the fluid galley on the top of the gearbox where it is
distributed to the gears and bearings. A fluid pressure
relief valve is located under the fluid galley cover to
maintain a specified fluid pressure.
Moisture Separator
Two combination moisture separator and water traps are
provided for collecting and removing condensate at both
the intercooler and aftercooler discharge and expelling it
to the customer’s drain.
A drain valve is located below the buffing air vents. It is
recommended that this valve be opened daily or more
often as atmospheric (high humidity) conditions require.

Section II - Description
Quincy Compressor®- QSD™11
Capacity Control System
The standard method of capacity control for the QSD™
oil-free compressor is Continuous Run with load/no-load.
The Continuous Run Mode of operation is ideal for a
compressed air system that will operate at full load
conditions most of the time, with minimal unloaded time.
The QSD™allows very consistent and tight control of air
system pressure by constantly monitoring package
discharge pressure and operating within a deadband of as
low as 5 PSI. This means the system pressure never
needs to fall below the normal required pressure.
The recommended receiver size for a QSD™oil-free
compressor is a minimum of three (3) gallons per rated
compressor CFM; the more the better. If there is more
than one compressor, the receiver must be sized based on
the total CFM of all compressors. This should be
increased to a minimum of five (5) gallons per total
compressor CFM for systems with sharp changes in
demand. The receiver must be located immediately
adjacent to the compressor and before any additional
system components such as dryers and filters. This
allows the Power$ync II™controller to operate the
compressor coincident to system demand changes
without dramatic episodes of rapid loading and unloading
(cycling) of the machine.
NOTE
Continuous operation with rapid load/no-load
cycles will reduce component life. Cycle rates
should never exceed six (6) per minute. Proper
receiver sizing is essential for reliable operation.
The QSD™does not use an inlet valve, but rather the
patented Power$ync®lift valve technology to unload the
machine. With this type of control, the unit is operating
either at full capacity or 0% capacity, depending on
system pressure.
Suction or inlet valves on competitor designs act to close
the inlet to the compressor and induce a vacuum in both
compressor stages as it continues to try to compress air.
This vacuum creates a reverse pressure differential across
the bearing seals, causing the bearing fluid to migrate
toward the compression chamber when the machine is
unloaded.
The QSD™incorporates patented Power$ync®lift valves
on both stages of compression. The valves, one per
stage, actually relieve the compressor stages ability to
compress air. Because the unloading is positive, and no
vacuum is created, unloaded horsepower is minimized.
Also, since the compressor stages are not creating a
vacuum in the unloaded state, there is no tendency for the
bearing fluid to migrate toward the compression
chambers, reducing the likelihood of fluid contamination
of the air.
The QSD™loads and unloads in response to the air
system pressure. The Power$ync II™controller monitors
package discharge pressure into the compressed air
system and either opens or closes the lift valves to load or
unload the compressor, based on preset pressure values.
Upon start-up, the QSD™will operate at full capacity up
to a predetermined maximum value, usually 5 PSI above
the normal plant air system operating level. The
blowdown valve and both lift valves are closed at this
time. When the preset pressure value is reached, the
Power$ync II™controller opens both lift valves and the
blowdown valve simultaneously, reducing the
compressor output to 0%. The QSD™will continue to
operate in the unloaded condition, with the lift valves and
the blowdown valve in the open position, until the
Power$ync II™controller detects a reduction in pressure
indicating a reset condition. This pressure, like the
unload, is determined by the customer, based on the air
system operating requirements. The Power$ync II™
controller reacts to the signal by closing the lift valves
and the blowdown valve, thus reloading the compressor
and returning to 100% output to complete the cycle.
NOTE
If the stage two discharge blowdown valve fails
to open an excessive pressure differential across
stage two will occur. The unit will shut down
automatically to prevent excessive temperature
build-up in the stage two airend.

Section II - Description
12 Quincy Compressor®- QSD™
The Power$ync II™controller allows the customer to
select Auto Dual as an alternate control method. Auto
Dual incorporates a timer which will turn the compressor
off if it remains in the unloaded condition for a preset
length of time. If the system pressure remains above the
preset pressure for the programmed time interval,
Power$ync II™places the compressor in Standby Mode,
with the drive and fan motors de-energized. The
Power$ync II™controller waits for an indication of
demand, recognized as a drop in system pressure to a
preset minimum pressure level, and automatically restarts
the compressor.
Essentially equal to Continuous Run, Auto Dual goes a
step beyond to offer the opportunity for additional power
savings in a system with more dramatic differences in
demand. As demand changes with shift changes or
varying operations, the Power$ync II™controller will
allow the QSD™compressor to go into Standby Mode
when compressor output is not needed. Like the
Continuous Run Mode, a properly sized air receiver will
ensure that the compressor operates and reacts properly
as air system demand changes.
NOTE
RefertosectionVIIIforPower$yncII™operating
instructions.
Electrical System
A diagram of the electrical system is shown in the parts
manual shipped with the compressor. A wiring diagram
is also included in the control panel of all Quincy
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
Standarddrivemotorsare open, drip-proof, with
amaximumambient temperature rating of 40°C.
They are not suitable for salt laden, corrosive,
dirty, wet or explosive environments.
The standard QSD™compressor utilizes 460V incoming
power through an across the line magnetic starter. A
transformer in the control panel reduces this voltage to
120 VAC for the various controls on the unit. These
controls include the selector switch, pressure switch,
timer, high air temperature (HAT) safety switches,
solenoid valve and various indicator lights. Other
incoming line voltages are available as options. A
NEMA 4 electrical enclosure is standard.

Section II - Description
Quincy Compressor®- QSD™13
Back-up Control
The QSD™Power$ync II™controller is supplied with a
back-up control for emergency operations if the
electronic control is inoperative. The Back-up Mode is a
simplified system of operations and is not intended for
long-term operation. When Back-up Mode is selected all
power is removed from the Power$ync II™controls, thus
the indicator lights located on the annunciator panel will
be inoperable. The back-up control uses a PLC for the
logic circuit. In the Back-up Mode, the PLC monitors
several different areas of the unit to ensure they are in the
proper ranges for normal operation.
Undernocondition should the QSD™beswitched
fromPower$yncIItoBack-upModeorviceversa
without first removing all power to the unit.
Always inspect for component failure before
operating in Back-up Mode. Operating the unit
with faulty components may void warranty.
Shutdown Conditions
NOTE
If one of the following conditions occurs at any
timetheunitwill immediatelyshutdown. Theunit
shouldnotberestarteduntil the problem hasbeen
corrected.
•The fluid pressure does not reach 15 PSI within five
(5) seconds at start-up or does not maintain pressure
during normal operation.
•The HAT’s are open at start-up or at any time during
operation.
•The drive or fan contactor overloads trip.
•The coolant flow switch does not close within five
(5) seconds after start-up.
•The interstage pressure switch does not open within
five (5) seconds after start-up (Back-up Mode only).
•The second stage pressure switch does not open
within five (5) seconds after start-up (Back-up Mode
only).
•Both the interstage and second stage pressure
switches are open at start-up (Back-up Mode only).
•The second stage pressure switch does not close
within five (5) seconds after the load/unload pressure
switch opens and does not reopen within five (5)
seconds after the load/unload pressure switch closes
(Back-up Mode only).
High voltage could cause death or serious injury.
Disconnect all power supplies before opening the
electrical enclosure or servicing.
!CAUTION
!CAUTION !WARNING

Section II - Description
14 Quincy Compressor®- QSD™
Safety Sensors
Four (4) high air temperature RTD’s are standard on
QSD™units. These protect the unit by sensing unusually
high temperatures and shutting the unit down.
Power$ync II™monitors the following areas for high air
temperature conditions:
•Stage One Discharge •Stage Two Discharge
•Stage Two Inlet •Package Discharge
Shutdowns for the Power$ync II™ RTD’s is 435°F on
discharge locations, and 150°F on Stage 2 inlet and
165°F on package discharge.
In Back-up Mode, two HAT switches monitor stage one
and stage two discharge temperature. These switches are
nonadjustable and set to trip at approximately 470°F.
NOTE
The back-up control circuit has two (2) HAT
switches. There are no indicator lights for these
HAT shutdowns. These HAT switches can also
cause a shutdown in Power$ync II™Mode as a
back-up to the RTD’s.
Never remove, bypass or tamper with any safety
HAT switch or sensor. Failure to provide this
safety feature could cause death, serious injury
and property damage. If the compressor is
shuttingdownduetohighdischarge temperature,
contact a qualified service technician
immediately.
Indicators
Main Power on Light
Indicates when 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, regardless
of the position of the control selector switch.
Always check power supply disconnect. The
power on light may be inoperable.
High Discharge Air Temperature Lights
Indicates when the unit has sensed an unusually high
discharge temperature.
NOTE
There is no indication of high temperature
shutdown on the control panel in Back-up Mode.
Motor Overload Fault
Indicates excessive amp draw of drive motor.
NOTE
There is no indication of motor overload
shutdown on the control panel in Back-up Mode.
There is a mechanical indicator on the overload
relay.
!WARNING
!CAUTION

Section II - Description
Quincy Compressor®- QSD™15
Fluid Filter Change Light
Indicates excessive pressure differential across the fluid
filter. It is used to determine fluid filter change intervals.
NOTE
There is no indication of fluid filter change on
the control panel in Back-up Mode.
Air Intake Filter Service Light
This indicator signals when the filter element needs to be
replaced.
NOTE
Thereis no indication of airintakefilter pressure
drop on the control panel in Back-up Mode.
Low Lube Light
This indicator signals that the compressor has shutdown
due to low fluid pressure.
NOTE
There is no indication of low fluid pressure on
the control panel in Back-up Mode.
Thereis no indication ifthecoolant flow switch is
not satisfied and the contacts are open. This will
shutdown the unit. Refer to troubleshooting
section for corrective action. Power$ync II™will
show “Emergency Stop Button Pressed” if the
emergencystopbuttonispressed,thecoolantflow
switch contacts open or either of the high air
temperature (HAT) switches open. These
shutdowns operate in any mode by using the
emergency stop circuit.

Section III - Installation
16 Quincy Compressor®- QSD™
• Receiving
• Moving the Unit to the Installation Site
• Location
• Piping Connections
• Manual Shutoff Valves
• Relief Valves
• Electrical
• Guards
• Water and Sewer Facilities at the Installation
Site (Water-cooled models only)
• Fluid Level
• Compressor Rotation
• Fan Rotation
Receiving
Upon receipt of the compressor, immediately inspect for
any visible signs of damage which may have occurred in
shipment. If damage is found at the time of delivery,
have the delivering carrier make 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
was 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 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 the side or 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.
Improper lifting may result in component or
system damage or personal injury. Follow good
shop practices and safety procedures when
moving the compressor.
Location
Locate the compressor on a level surface, indoors, in a
clean, well lit and well ventilated area, free from
excessive dust, dripping liquids, hydrocarbons, and toxic,
corrosive or flammable gases. Allow sufficient space
(four feet of clearance on all sides and top of the
compressor) for safe and proper daily inspections and
maintenance. The entire length of the base must be
supported. Shim where necessary, but do not use wood.
Quincy recommends installing closed cell foam between
the base and the floor. The machine must be protected
against freezing and excessive ambient temperatures.
Sheltering from freezing temperatures is mandatory.
Ambient temperature should not exceed 110°F (failure to
heed this may result in a high air temperature shutdown).
For air-cooled units, careful consideration of room size
and shape must be done so that hot exhaust air from the
fan does not recirculate within the room, causing the
operating temperatures to rise. All models are intended
for indoor installation.
!CAUTION

Section III - Installation
Quincy Compressor®- QSD™17
This compressor should not be operated in
temperatures below 40°F or above 110°F.
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 acoustic enclosure. This heated 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 a high temperature shutdown.
NOTE
Clean, fresh air in sufficient quantity is required
for proper compressor operation.
Never locate the compressor inlet system where
it can ingest toxic, volatile or corrosive vapors,
air temperatures exceeding 110°F, water or
extremely dirty air. Death, serious injury or
property damage could result.
Removal or modification of sound insulation
could result in high sound levels which may be
hazardous to personnel.
Quincy QSD™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. Use
only lag bolts to secure 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 coolers, piping, etc.
Do not remove or deface any Danger, Warning, Caution
or instructional labels found on the compressor. Labels
should be provided with enough light to read and be
conspicuously located and maintained for legibility. .
Removalor defacing ofsafety labels will resultin
uninformed conditions, which could result in
personal injury or property damage.
Piping Connections
A drip leg with a drain valve should be mounted adjacent
to the QSD™service connection and extend below the
package air connection. The drip leg should be drained
daily to avoid accumulation of condensate and debris.
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 360°F. 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.
!WARNING
!CAUTION
!WARNING
!CAUTION

Section III - Installation
18 Quincy Compressor®- QSD™
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. The piping should never be smaller
than the connection on the compressor.
Manual Shutoff Valve
Install a manual shut-off valve (block valve) to vent the
compressor and discharge line to the atmosphere. In
those instances where the air receiver tank services a
single compressor, the manual shut-off valve can be
installed in the receiver. When a manual shut-off valve is
used, a pressure relief valve is installed upstream from
the manual shut-off valve. These valves should be
designed and installed to permit maintenance to be
performed in a safe manner. Never substitute a check
valve for a manual shut-off valve if the purpose is to
isolate the compressor from a system for servicing. If a
manual shut-off valve is installed at the service
connection, it must be open to allow air to pass to the
service line when the compressor is operating. Provide
drip legs in the air piping from the compressor as good
installation practices dictate.
NOTE
Never operate the compressor with the shut-off
valve closed. If the compressor is operated with
the shut-off valve closed, a pressure related
shutdown will occur.
Pressure 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.
Relief valves are to protect system integrity in
accordance with ANSI/ASME B19 safety
standards. Failuretoprovideproperlysized relief
valves could cause death or serious injury.
Relief valves are 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. Always direct discharge
from relief valves to a safe area away from personnel.
!WARNING