Quincy Compressor QT Series User manual

This manual contains important safety information and must be
carefully read in its entirety and understood prior to installation
by all personnel who install, operate and/or maintain this product.
On-line product registration, parts ordering and warranty information is available at www.quincycompressor.com
THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING LEAD,
WHICH IS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER
AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. FOR MORE
INFORMATION GO TO WWW.P65WARNINGS.CA.GOV
Manual No. 2022208700
September 2018 Edition
QT and QTS Series
Compressors
Instruction Manual

QT/QTS Series Quincy Compressor
2022208700, September 2018 1
Contents
SECTION 1 SAFETY
Safety First............................................................................................................................................................2
Summary of Changes............................................................................................................................................4
SECTION 2 SYSTEM DYNAMICS
Description & Application ....................................................................................................................................5
Principles of Compression Cycles.........................................................................................................................5
Principles of Lubrication Systems .......................................................................................................................5
Principles of Cooling Systems ..............................................................................................................................6
Principles of Dryers & Filters ..............................................................................................................................6
SECTION 3 INSTALLATION
Receiving Delivery ................................................................................................................................................7
Freight Damage ....................................................................................................................................................7
Location .................................................................................................................................................................8
Electrical Supply Requirements...........................................................................................................................9
Wiring & Piping Schematics ..............................................................................................................................10
Mounting .............................................................................................................................................................25
System Components............................................................................................................................................25
Induction System ................................................................................................................................................27
Compressed Air Discharge System ....................................................................................................................28
SECTION 4 START-UP & OPERATION
Pre-Starting Checklist ........................................................................................................................................32
Initial Starting & Operating ..............................................................................................................................33
Daily Starting Checklist.....................................................................................................................................33
SECTION 5 MAINTENANCE & LUBRICATION
Stopping for Maintenance ..................................................................................................................................35
Maintenance Schedule........................................................................................................................................35
Maintenance Schedule Checklist Sample..........................................................................................................35
Lubrication ..........................................................................................................................................................37
Pulley / Sheave Alignment & Belt Tension........................................................................................................38
Pressure Switch Adjustment ..............................................................................................................................39
Pilot Valve Adjustment Instructions..................................................................................................................40
SECTION 6 TROUBLESHOOTING
Troubleshooting ..................................................................................................................................................41
SECTION 7 REFERENCE INFORMATION
Decal Locations ...................................................................................................................................................45

QT/QTS Series Quincy Compressor
2022208700, September 2018 2
SECTION 1 SAFETY
Safety First
At Quincy Compressor safety is not only a primary concern, but a faithfully
performed practice. Beginning with the design stage, safety is built into every
Quincy compressor. It is the intention of this manual to pass along the “safety
first” concept to you by providing safety precautions throughout its pages.
“DANGER !”, “WARNING !”, and “CAUTION !” are displayed in large
bold capital letters in the left hand column to call attention to areas of vital
concern. They represent different degrees of hazard seriousness, as stated
below.The safety precaution is spelled out in bold upper and lower case letters
in the right hand column.
Immediate hazards which will result in severe personal injury or
death.
Hazards or unsafe practices that could result in personal injury or
death.
Hazards or unsafe practices which could result in minor personal
injury, product or property damage.
Each section of this instruction manual,as well as any instructions supplied
by manufacturers of supporting equipment, should be read and understood
prior to starting the compressor. If there are any questions regarding any part
of the instructions, please call your local Quincy distributor, or the Quincy
Compressor factory before creating a potentially hazardous situation. Life,
limb, or equipment could be saved with a simple phone call.
Compressors are precision high speed mechanical equipment requiring
caution in operation to minimize hazard to property and personnel. There
are many obvious safety rules that must be observed in the operation of this
type of equipment. Listed below are some additional safety precautions that
must be observed.
•Transfer of toxic,dangerous,flammable or explosive substances using Quincy
Compressor products is at the user’s risk.
•All installation, maintenance and repair must be performed by a qualified
technician and/or electrician.
•Turn off and lockout/tagout (per OSHA regulation 1910.147) the main power
disconnect switch before attempting to work or perform any maintenance.
•Do not attempt to service any part of the unit while it is operating.
•Per OSHA regulation 1910.147, relieve the system of all pressure before at-
tempting to service any part of the unit.
•Allow ample time for the compressor to cool before performing service pro-
WARNING !
CAUTION !
DANGER !

QT/QTS Series Quincy Compressor
2022208700, September 2018 3
cedures. Some surface temperatures exceed 350°F when the compressor is
operating.
•Do not operate the unit with any of its safety guards, shields, screens, enclo-
sure panels or doors removed.
•Do not remove or paint over any DANGER!, WARNING!, CAUTION!, or
instructional materials attached to the compressor. Lack of information re-
garding hazardous conditions can cause property damage or personal injury.
•Periodically check all pressure relief valves for proper operation.
•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.
•Do not install a shutoff valve in the compressor discharge line without first
installing a pressure relief valve of proper size and design between the shutoff
valve and the compressor.
•Do not use plastic pipe, rubber hose, or lead-tin soldered joints in any part
of the compressed air system.
•Alterations must not be made to this compressor without Quincy Compres-
sor’s approval.
•Be sure that all tools, shipping and installation debris have been removed
from the compressor and installation site prior to starting the compressor.
•Do not operate the compressor in excess of the ASME pressure vessel rating
for the receiver or the service rating of the compressor, whichever is lower.
•Make a general overall inspection of the unit daily and correct any unsafe
situations. All fasteners must be kept tight.
•Reckless behaviour of any kind involving compressed air is dangerous and
can cause very serious injury to the participants.
•Wear safety glasses and hearing protection during operation, service and
maintenance procedures.
•Provisions should be made to have the instruction manual readily available
to the operator and maintenance personnel. If for any reason any part of the
manual becomes illegible or the manual is lost, have it replaced immediately.
The instruction manual should be read periodically to refresh one’s memory.
It may prevent a serious or fatal accident.
•Never use a flammable or toxic solvent for cleaning the air filter or any parts.
Air used for breathing or food processing must meet OSHA 29 CFR
1910.134 or FDA 21 CFR 178.3570 regulations. Failure to do so may
cause severe injury or death.
DANGER !

QT/QTS Series Quincy Compressor
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Oil and moisture residue must be drained from the air receiver
daily or after each use. Accumulations of oil residue in the receiver
can be ignited by embers of carbon created by the heat of compres-
sion, causing an explosion, damage to property and injury to per-
sonnel.
When using battery cables to start engine driven units do not use
more than a total of 40 ft. of #4 gauge cable (GND & HOT).
The owner, lessor or operator of any compressor unit manufactured by
Quincy Compressor is hereby warned that failure to observe the safety precau-
tions and procedures outlined in this manual may result in serious personal
injury, damage to property, and may void your warranty. Quincy Compressor
must authorize all warranty service. Before contacting your distributor or the
factory, check the maintenance requirements and the troubleshooting guide
for your compressor. Most warranty issues can be resolved by following proper
maintenance procedures.
Quincy Compressor neither states as fact, nor in any way implies that the
above list of safety precautions is an all inclusive list, the observance of which
will prevent all damage to property or injury to personnel.
Every effort has been taken to ensure that 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 equip-
ment previously or subsequently sold.
Summary of Changes to This Manual
(since previous printing dated September 2018):
· P65 Warning Label for California was added to cover.
· Paragraph added to Electrical Supply Requirements
WARNING !
CAUTION !

QT/QTS Series Quincy Compressor
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SECTION 2 SYSTEM DYNAMICS
Description & Application
QT Series compressors are heavy duty, splash lubricated,air cooled,belt driven
compressors capable of delivering 175 PSIG of compressed air.
QTS Series single stage compressors (capable of delivering 125 PSIG of
compressed air) and vacuum pumps are air-cooled and splash lubricated.
See appropriate parts manual for recommended RPM operating range and
pressure.The QTS-3VAC & QTS-5VAC vacuum pumps are approved for sweet
dry natural gas applications. It is the installers responsibility to meet the
appropriate codes and regulations for this type of installation.
Principles of Compression Cycles
Single Stage Compressors
During the downstroke of a single stage compressor, air is drawn through
an intake valve in the head of the compressor and into the cylinder. At the
bottom of the stroke, the intake valve closes and air is trapped in the cylinder.
The air is then compressed in the cylinder during the upstroke of the piston.
Total compression, from atmospheric pressure to the final discharge pressure,
is accomplished in one stroke of the piston.
Two Stage Compressors
During the downstroke of the piston of a two stage compressor, air is drawn
through an intake valve in the head of the compressor into the low pressure
cylinder and compressed during the upstroke of the piston.
The compressed air is then released through a discharge valve in the head
of the compressor to an intercooler (usually finned tubing) where the heat
resulting from compression is allowed to dissipate. The cooler compressed air
is then drawn into a second compression cylinder, the high pressure cylinder,
for compression to final pressure.
From there the compressed air is released through a discharge valve to an
air receiver tank or directly to a network of compressed air supply lines. In
one revolution of the crankshaft a compression cycle is completed.
Principles of Lubrication Systems
Splash Lubricated Compressors
With each stroke of the compressor, a dipper attached to the bottom of the
connecting rod , dips into an oil bath at the bottom of the crankcase. This
dipper splashes oil throughout the interior of the crankcase, lubricating all
moving parts.
It is important with this system that the correct oil level be maintained. If
the oil level is too high, excessive oil carryover could result. If the oil level is
too low, or the compressor is not operated within the correct RPM range, the
moving parts will not be adequately lubricated.
Principles of Cooling Systems

QT/QTS Series Quincy Compressor
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These compressors are equipped with a compressor sheave with fan blades.
The fan blades force ambient air across cylinder head and intercooler fins to
cool the compressor. These compressors are designed to be operated with the
compressor sheave turning in a counterclockwise rotation (as viewed “tummy
to the sheave”).
Principles of Dryers & Filters
Moisture occurs naturally in air lines as a result of compression. Moisture
vapor in ambient air is concentrated when pressurized and condenses when
cooled in downstream air piping. Compressed air dryers reduce the moisture
vapor concentration and prevent water formation in compressed air lines.
Dryers are a recommended companion to filters, aftercoolers, and automatic
drains for improving the productivity of compressed air systems.
Water and moisture vapor removal increases the efficiency of air operated
equipment, reduces contamination and rusting, increases the service life of
pneumatic equipment and tools, prevents air line freeze-ups, and reduces
product rejects.

QT/QTS Series Quincy Compressor
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SECTION 3 INSTALLATION
Receiving Delivery
Immediately upon receipt of compressor equipment and prior to completely
uncrating, the following steps should be taken:
Step 1) Inspect compressor equipment for damage that may have occurred
during shipment.If any damage is found,demand an inspection from
the carrier.Ask the carrier how to file a claim for shipping damages.
(Refer to SECTION 3, Freight Damage for complete details.)
Shipping damage is not covered by Quincy Compressor
warranty.
Step 2) Insure that adequate lifting equipment is available for moving
the compressor equipment.
Improper lifting can result in component or system damage, or
personal injury. Follow good shop practices and safety procedures
when moving the unit.
Step 3) Read the compressor nameplate to verify the model and size
ordered.
Step 4) Read the motor nameplate to verify that the volt, phase and hertz
ratings are the same as the electrical power supply connecting to
the motor. NOTE: Do not use a triple voltage (115/208-230)
single-phase motor or (208-230/460) 3-phase motor for 208
volts or lower. Use a 200 volt or 208 volt motor only.
Step 5) Read the pressure relief valve nameplate to be sure it does not
exceed the working pressure shown on the compressor or any other
component in the system.
Step 6) Read and understand the safety precautions contained
within this manual. The successful and efficient operation of
compressor equipment depends largely upon the amount of care
taken to install and maintain the equipment. Quincy Compressor
strongly recommends that any or all person(s) in charge of
installing, maintaining, or servicing one of our compressors read
and understand the entire contents of this manual in order to
perform such duties safely and efficiently.
Freight Damage
It is extremely important that you examine every carton and crate as soon as
you receive it. If there is any obvious damage to the shipping container, have
the delivering carrier sign the freight bill, noting the apparent damage, and
request a damage report.
If concealed damage is discovered at a later date, the carrier must
be notified within 15 days of initial receipt of freight. Concealed
shipping damage is not covered by Quincy Compressor Warranty.
Contact the carrier as soon as possible, giving them an opportunity to inspect
WARNING !

QT/QTS Series Quincy Compressor
2022208700, September 2018 8
the shipment at the premises where the delivery was made. Do not move the
damaged freight from the premises where the original delivery was made.
Retain all containers and packing for inspection by the carrier.
A claim form can be requested from the carrier: Standard Form for
Presentation of Loss and Damage Claims (form # 3208). Your claim will need
to be substantiated with the following documents:
a.) form #3208
b.) original bill of lading
c.) original paid freight bill
d.) original invoice or certified copy
e.) other particulars obtainable in proof of loss or damage (photos,
damage inspection, etc.)
The proper description and classification of our product in the National
Motor Freight Classification 100-H,contained in item 118100,reads as follows:
Compressors, air, or air ends: with or without air tanks, hose or nozzles,
mounted or not mounted.”
We suggest that these instructions be circulated to your shipping and
receiving personnel.
Location Quincy air compressors must be installed and operated in a secure, level,
upright position in an area that is clean, dry, well lighted, adequately
ventilated, and not less than 12 inches to a wall or other compressor. (Note:
A gas engine will produce carbon monoxide; always provide adequate
ventilation!) Inspection and maintenance checks are required daily.
Therefore, sufficient space needs to be provided around the compressor for
safe and proper inspection, cleaning, and maintenance.
Ample circulation of air must be provided across the compressor cylinders,
heads and cooler (if so equipped). If at all possible, the pulley drive system
(i.e. motor pulley, compressor sheave, belts and guard) should face a wall to
minimize any danger created by the drive system while the compressor is
operating. Do not allow hot air from additional equipment to blow towards
the compressor.
Quincy compressors should be operated in temperatures under 104°F. In
cold climates, the compressor should be installed in a heated building.
Do not operate this compressor in ambient temperatures lower
than 0° F. A crankcase heater is recommended for a compressor
that is to operate in temperatures under 32° F.
Under no circumstances should a compressor be used in an area
that may be exposed to toxic, volatile, or corrosive atmosphere. Do
not store toxic, volatile, or corrosive agents near the compressor
Noise
Noise is a potential health hazard that must be considered. There are
federal and local laws governing acceptable noise levels. Check with local
officials for specifications.
CAUTION !
WARNING !

QT/QTS Series Quincy Compressor
2022208700, September 2018 9
Excessive noise can be effectively reduced through various methods. Total
enclosures, intake silencers, baffle walls, relocating or isolating the compressor
can reduce noise levels.Care must be taken when constructing total enclosures
or baffle walls.If not properly constructed or positioned, they could contribute to
unacceptable noise levels or overheating.Consult your local Quincy distributor
if assistance is required.
Unusual noise or vibration indicates a problem. Do not operate the
compressor until the source has been identified and corrected.
Electrical Supply Requirements
The electrical installation of this unit must be performed by a qualified
electrician in accordance with the National Electrical Code (NEC) or the
Canadian Electrical Code (CEC), the National Electrical Safety Code (NESC),
OSHA and/or state and local codes. Failure to abide by the national, state and
local codes may result in physical harm and/or property damage.
Before installation, the electrical supply must be checked for adequate
wire size and transformer capacity. Verify that the electrical supply voltage
matches the requirements of the motor. A suitable circuit breaker or fused
disconnect switch should be provided. When a 3 phase motor is used to drive
a compressor, any unreasonable voltage imbalance between the legs must be
eliminated and any high or low voltage corrected to prevent excessive current
draw. Note: This unit must be grounded.
The data label on the QT units shows general information about the unit.
The Amps shown on this label are the maximum amps allowed for the motor
size used on the unit per National Electrical Code.These amps may be greater
than the motor nameplate used but per the National Electrical Code they can
be used for wire and fuse sizing.
High voltage may cause personal injury or death. Disconnect and
lockout/tagout per OSHA regulation 1910.147 all electrical power
supplies before opening the electrical enclosure or servicing.
Never assume a compressor is safe to work on just because it is not
operating. It could restart at any time. Follow all safety precautions
outlined in SECTION 5, Stopping For Maintenance.
Electrical enclosures and components must be in compliance with
NEMA environmental ratings for the areas in which they are being
installed.
Overload Relay
An overload relay monitors the compressor motor electrical current and
turns the compressor motor off when an overload is sensed. It is mounted
on the bottom of the motor starter. The overload relay is designed for motors
with a 1.15 service factor. The overload relay setting should be adjusted to
the motor nameplate amp rating. If the motor has a service factor rating
other than 1.15, the overload relay setting must be adjusted to compensate.
Contact your Quincy distributor for assistance.
WARNING !
DANGER !
WARNING !
WARNING !

QT/QTS Series Quincy Compressor
2022208700, September 2018 10
Fig. 3-1
3 Phase Standard Magnetic Motor Starter With Automatic Start / Stop Control
Wiring Schematic WP1744A (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1, L2 & L3.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.

QT/QTS Series Quincy Compressor
2022208700, September 2018 11
Fig. 3-2
3 Phase Magnetic Motor Starter With ON-OFF Switch and Automatic Start / Stop Control
Wiring Schematic WP1744A (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1, L2 & L3.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.

QT/QTS Series Quincy Compressor
2022208700, September 2018 12
Fig. 3-3
3 Phase Magnetic Motor Starter With HAND-OFF-AUTO Switch and Automatic Start / Stop Control
Wiring Schematic WP1744A (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1, L2 & L3.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.

QT/QTS Series Quincy Compressor
2022208700, September 2018 13
Fig. 3-4
3 Phase Magnetic Motor Starter With TEST-OFF-AUTO Switch and Automatic Start / Stop Control
Wiring Schematic WP1744A (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1, L2 & L3.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.

QT/QTS Series Quincy Compressor
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Fig. 3-5
Single Phase Standard Magnetic Motor Starter With Automatic Start / Stop Control
Wiring Schematic WP1744B (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1 & L2.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.

QT/QTS Series Quincy Compressor
2022208700, September 2018 15
Fig. 3-6
Single Phase Magnetic Motor Starter With ON-OFF Switch and Automatic Start / Stop Control
Wiring Schematic WP1744B (Rev. D)
Magnetic Starter
Contactor
Overload
Relay
Connect incoming power lines
at screw terminals L1 & L2.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.

QT/QTS Series Quincy Compressor
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Fig. 3-7
Single Phase Magnetic Motor Starter With HAND-OFF-AUTO Switch and Automatic Start / Stop Control
Wiring Schematic WP1744B (Rev. D)
Magnetic Starter
Contactor
Connect incoming power lines
at screw terminals L1 & L2.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.
Overload
Relay

QT/QTS Series Quincy Compressor
2022208700, September 2018 17
Fig. 3-8
Single Phase Magnetic Motor Starter With TEST-OFF-AUTO Switch and Automatic Start / Stop Control
Wiring Schematic WP1744B (Rev. D)
Magnetic Starter
Contactor
Connect incoming power lines
at screw terminals L1 & L2.
All wires are red unless otherwise specied.
Dashed lines represent wires supplied by others.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.
Overload
Relay

QT/QTS Series Quincy Compressor
2022208700, September 2018 18
Fig. 3-9
Single Phase Condor Combination Pressure Switch / Overload Relay
Wired to an 1800 RPM Motor
Connection Diagram
Connect incoming power lines
at screw terminals L1 & L2.
Pressure Switch
To Remove the Cover:
1. Turn the switch handle to “OFF” position.
2. Remove small screws on side of the cover.
3. Pull the cover away from the pressure switch.
To Re-install the Cover:
1. Make sure the switch handle is in the “OFF”
position (as shown).
2. Carefully slide the cover over the pressure
switch.
DO NOT FORCE!
3. Re-install the small cover screws and tighten.
CAUTION !
Verify all wires are secure
and fasteners are torqued
before connecting power to
the unit.
At Installation, the customer is to provide:
Disconnect and branch circuit overcurrent protection and
grounding between the power supply and the electrical
control enclosure in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and / or
any local codes having precedence.
Connect ground wires.