C-Aire S33 User manual

Fire Protection Air Compressor
Owner’s Manual
REV. A
Dec/2/21
MODEL S33

ii
TABLE OF CONTENTS
SAFETY ��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 2
INSTALLATION ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 2
ELECTRICAL�������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 4
START UP ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������ 5
DIGITAL PRESSURE SWITCH PROGRAMMING AND INSTRUCTIONS FOR S33 MODEL ���������������������������������������������������������������������������������������� 5
SYSTEM INSTALLATION DIAGRAM����������������������������������������������������������������������������������������������������������������������������������������������������������������������� 7
MAINTENANCE���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 8
VALVES AND SWITCHES�������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 8
TROUBLESHOOTING ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 9
WARRANTY �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������10
6. MANUAL DRAIN VALVE
RM 260R-0050
8. 3/4" OUTLET
2. SAFETY VALVE
BR SV-25-70
1. AIR FILTER
FA S28
10. TANK
5. DIGITAL AMD GEN-3
EL D0911-S261R-K
9. JUNCTION BOX
3. CHECK VALVE
BR 37525
4. SOLENOID
EL SV3V1-06
7. MOUNTING BRACKET
RM 261R-0076
PARTS IDENTIFICATION / PART NUMBERS OF REPLACEABLE PARTS
INCLUDES BUSHING
TO REDUCE TO 1/2"

2
INTRODUCTION
The compressor you have purchased is a combination of nearly 100 different components, all of which have been carefully designed,
engineered, and assembled to ensure a long, dependable, trouble-free life� The product has been fully tested at the factory and has gone
through quality-control inspection prior to shipping�
Like any mechanical piece of equipment, it is necessary to fully understand the proper use of its operation and application�
Misuse of this valuable and helpful air-power source may shorten its expected life as well as void the warranty of the entire unit�
We ask you take the time to read this manual to ensure the dependable service you can expect from your C-Aire compressor�
Failure to do so can cause serious injury and may void all warranties�
Please take special notice of the safety precautions and safety information contained in this manual� Compressed air, like electricity,
is a very helpful and necessary tool� However, compressed air can be extremely dangerous and harmful when it is not understood or is
misused�
PRODUCT NUMBERING SYSTEM
Mount
■SET PRESSURE IN SECONDS
■IDEAL FOR QUIET SETTINGS
•Nursing Homes
•Apartments
•Churches
■INCLUDED:
•UNIVERSAL MOUNTING BRACKET
•RISER MOUNT HOSE CLAMPS (for 2�5” to 4” risers)
•POWER CORD (for installation and testing purposes)
!WARNING: Refer to the authority having jurisdiction
regarding hard wiring requirements�
■AVAILABLE ACCESSORIES
ACCESSORY PART NUMBER
1/2” X 30” STAINLESS STEEL FLEXIBLE HOSE DT 3005 H / PACK OF 5: DT 3005 H-5PK
1/2” X 36“ FLEXIBLE HOSE DT 3605 H / PACK OF 5: DT 3605 H-5PK
1/2” X 48” FLEXIBLE HOSE DT 4805 H / PACK OF 5: DT 4805 H-5PK
1/2” X 72” FLEXIBLE HOSE DT 7205 H / PACK OF 5: DT 7205 H-5PK
RISER MOUNT HOSE CLAMPS (5”- 7” RISERS) HS HC6-8-K
RISER MOUNT HOSE CLAMPS (7”- 9” RISERS) HS HC8-10-K
■Listings:
•Pressure Switch: USA: UL 508 Canada: C22�2 No� 14
S33 R - LD 1 - 1 1 5 PD
33
SPECIFICATIONS S33
HP 1/4
PRESSURE SWITCH ADJUSTABLE: 5-55 PSI
FACTORY SET AT 10-20 PSI
MINIMUM DIFFERENTIAL: 5 PSI
CFM 0�7 @10 PSI
PUMP 1 CYLINDER, OIL FREE
CYLINDERS CERAMIC COMPOSITE
VOLTS 115
PHASE SINGLE
RUNNING AMPS 2�5
BREAKER SIZE 15 AMP RECOMMENDED
DIMENSIONS 23”x12”x8”
WEIGHT 20 LBS�

2
SAFETY
DEFINITIONS
!DANGER: Indicates a hazardous situation that, if not avoided, will result in death or serious injury�
!WARNING: Indicates a hazardous situation that, if not avoided, could result in death or serious injury�
!CAUTION: Indicates a situation that will or could cause minor injury or property damage�
GENERAL PRECAUTIONS
Read the Owner’s Manual before operating�
!DANGER:
Do not use compressed air for breathing air applications�
Beware of high voltage: disconnect lockout/tagout electric supply before servicing�
Ground compressor per codes�
!WARNING:
Beware of high-pressure air: do not bypass, modify, or remove safety/relief valves�
Beware of hot surfaces: allow unit to cool before servicing�
Do not operate with safety guards removed�
!CAUTION:
Never operate the compressor near flammable liquids or vapors�
Do not direct the air stream at body�
Drain tank air every day to decrease risk of bursting�
NOTE: Per UL 1450:46�17 C-Aire recommends a maximum of 70% duty cycle for its compressors�
INSTALLATION
SELECTING A LOCATION:
C-Aire compressors are to be installed and operated in a clean, dry, well-lighted, and well-ventilated area� Mounts to risers 2�5”-4”,
concrete or cinder block walls or studs on a drywall�
Provide at least 200 cubic feet of fresh air per 1 hp�
Ideal operating temperatures are between 32°F and 100°F�
Avoid excessively humid areas, as moisture may form in the pump, producing sludge and causing moving parts to wear prematurely�
NOTE: The dry pipe/sprinkler system compressor is to be installed in accordance with the Standard for Installation of Sprinkler Systems,
NFPA 13�
!CAUTION: If temperatures consistently drop below 32° F, install the compressor in a heated area�
!CAUTION: Never operate the compressor in temperatures below 20°F or above 104°F�
!WARNING: A compressor should never be used in an area where toxic, corrosive, or volatile agents may be present�
(INSTALLATION CONTINUED ON NEXT PAGE)

3
MOUNTING THE COMPRESSOR
!CAUTION: Remove the compressor from the shipping packaging before mounting�
!CAUTION: Do not mount unit horizontally�
MOUNTING INSTRUCTIONS
43
21
Riser
Drywall
Cinder block/Concrete
RISER: Mounts to 2.5” riser or larger
DRYWALL: Use 2x4s attached to studs in
the drywall to attach the mounting bracket
CINDER BLOCK/CONCRETE WALL: Use
wall anchors (not included) to attach
mounting bracket
INSTALL
AIR FILTER
ASSEMBLY
BOLT UNIT TO
MOUNTING
BRACKET
HANG
UNIT ON
MOUNTING
BRACKET
INSTALL
MOUNTING
BRACKET
INLET AND DISCHARGE PIPING
!CAUTION: Do not operate unit without inlet-air filtration�
If the air is dirty, pipe the filter to a source of clean air�
Do not install piping with a diameter lower than that of the pump intake�
!CAUTION: Do not use PVC plastic in the discharge line�
Use hand-welded or threaded steel or copper pipes and cast-iron fittings that are safe for the discharge pressure and temperature�

4
ELECTRICAL
!WARNING: Compressor installation must be performed by a qualified electrician in accordance with the National Electri-
cal Code (NEC) or the Canadian Electrical Code (CEC), the National Electrical Safety Code (NESC) OSHA code, and/or any
local or state codes having precedence�
Be sure of proper wire sizing and that the circuit breaker and the distance from the breaker is within suggested range� Confirm your
electrical-supply voltage matches what is required for the motor�
!WARNING: The compressor must be grounded� Grounding reduces the risk of electric shock� Certain C-Aire models are
equipped with a cord that has a grounding wire with a grounding plug� The plug must be plugged into an outlet that is
installed and grounded in accordance with all local codes and ordinances�
!WARNING: Improper installation of the grounding plug will result in a risk of electric shock� When repair or replacement of
the cord or plug is required, do not connect the grounding wire to either flat-blade terminal� The insulated wire with a green
outer surface and yellow stripes is the grounding wire�
NOTE: The installation, electric motor, wiring, and all electrical controls must be in accordance with NFPA 70-1996 National Electric
Code, National Electric Safety Code, and state and local codes� Failure to abide by the national, state, and local codes may result in
physical harm and/or property damage�
!DANGER: 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�
!DANGER: Never assume a compressor is safe to work on if it is not operating� It could restart at any time� Always discon-
nect/ lockout/tagout before servicing�
!CAUTION: Dry pipe sprinkler compressor must be wired to a reliable power source to be compliant with AHJ�
WIRING DIAGRAM
S33 DIGITAL AMD
YELLOW
WHITE
RED
BLACK
WHITE
BLACK
GREEN
BLACK
WHITE
GREEN
BLACK
WHITE
GROUNDGROUND
DIGITAL
AMD
POWER SOLENOID
COMPRESSOR

5
START UP
NOTE: There is no need to “break-in” your compressor� It has been tested and run at the factory by qualified personnel�
When operating the compressor for the first time, do the following:
1�Perform an inspection of the compressor to ensure there are no obstructions that might interfere with moving parts�
2�Release any remaining tank pressure by slowly opening the manual drain valve on the bottom of the tank (see parts identification 8)�
3�Connect the compressor to the power source (the compressor will start)�
DIGITAL AMD OPERATING INSTRUCTIONS FOR S33 MODEL
This Digital AMD has 5 different modes of operation� When it is
powered on, it starts in the RUN mode and will display the current
pressure�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
Pressing the
M
mode button once will switch it to the maximum
pressure setting, (or the pressure at which the compressor turns
off)� At this point you are able to adjust the maximum/turn off
pressure� When the MAX indicator is on, the arrow buttons
can perform a +1/-1 change to the set value� The
compressor will not run in this mode� If the compressor remains
in this mode for 60 seconds with no adjustments, it will
automatically revert back to the RUN mode� Range: 10-55 PSI�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
Pressing the
M
mode button a second time will switch it to the
minimum pressure mode, this is the minimum pressure the
system will reach before it turns on� At this point you are able to
adjust the minimum/turn on pressure� When the MIN indicator is
on, the arrow buttons can perform a +1/-1 change to
the set value� If the compressor remains in this mode for 60
seconds with no adjustments, it will automatically revert back to
the RUN mode� Range: 5-50 PSI� Note: the upper and lower
limits have a minimum differential of 5 PSI�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
Press the
M
mode button a third time and the 24HRS indicator
will display the total number of starts in the last 24 hours (The
counter will not measure time if the unit has no power)�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
(DIGITAL AMD INSTRUCTIONS CONTINUED ON NEXT PAGE)

6
DIGITAL AMD OPERATING INSTRUCTIONS (CONTINUED)
Pressing the
M
mode button a fourth time, the 7DAYS
indicator will display the total number of starts in the last 7 days
(The counter will not measure time if the unit has no power)�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
Pressing the
M
mode button a 5th time brings it back to the
beginning�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
When in the RUN state, press the
P
pressure button to toggle
between the pressure units of measure PSI, BAR and kPa�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
To lock the settings, hold the
M
and the
P
simultaneously for
3 seconds until the SETTINGS LOCKED light is illuminated�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
To unlock, repeat the previous process until the SETTINGS
LOCKED light turns off�
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
To display the Volts and Amps, when in the RUN mode, press
the up arrow button once and it will display the Volts and
press it again to display the Amps�
Volts
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
Amps
RUN MAX MIN
PSI
kPa
BAR
24HRS 7 DAY S
STARTS
SETTTINGS
LOCKED
C
PM
C
NOTE: After 60 seconds of inactivity in any mode, the unit will
revert back to the RUN mode�

7
SYSTEM INSTALLATION DIAGRAM
Dry Pipe Valve
System pressure varies
depending on size of system
Water in system
Air Source
Low Pressure
S33R-LD1-115PD
No AMD Permitted
Adjustable: 5-55 PSI
Braided Flex Hose
(Included)
Check Valve

8
MAINTENANCE
!WARNING: Before performing maintenance, release air pressure from the compressor using the manual drain valve (see
parts identification reference 5) and disconnect/lockout/tagout the main power supply�
WEEKLY MAINTENANCE
■Use the manual drain valve to drain moisture from your air compressor’s tank WEEKLY!
!CAUTION: Open the drain valve slowly to release the moisture, as pressure in the tank can cause the moisture to expel
at very high velocity�
■Check for any unusual noises, vibrations, or permanent leaks from the unloader valve�
BIANNUAL MAINTENANCE
■TURN OFF POWER, and check and tighten all electrical connections�
■Change air-intake filter(s)� The filter is located on the top of the compressor� Twist the top cap off of the filter
housing to access the filter�
■Check to make sure all bolts are tight�
VALVES AND SWITCHES
PRESSURE RELIEF VALVE (safety valve - see parts identification)
Pressure-relief valves are standard on all units� Pressure-relief valves aid in preventing system failures by relieving system pressure
when compressed air reaches a determined level� Pressure-relief valves are PRESET by the manufacturer:
under no circumstances
should the setting be changed by anyone other than the manufacturer�
!DANGER: Pressure-relief valves are designed to protect compressed-air systems in accordance with ASME B19 safety
standards�
PRESSURE SWITCH (see parts identification)
Pressure switches are standard on all C-Aire compressors� The pressure switch detects the demand for compressed air and allows the
motor to start� When the demand is satisfied, the motor stops� Pressure switches are preset at the factory by C-Aire and do not require
adjustment�
!DANGER: Electric power always exists inside the pressure switch whenever the compressor is connected to a power supply�
Do not touch any electrical leads or electric components without locking out the power supply first�

9
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SUGGESTED CORRECTION
•Compressor will not operate
•No electrical power*
•Loose wire connections
•Pressure switch not making contact
•Turn on power
•Tighten connection
•See pressure switch adjustment
•Knocking noise or internal pump issue •Internal pump problem •Call C-Aire for assistance
•Tank does not hold pressure when
compressor is turned off or unit
continuously runs
•Check all fittings
•Make sure drain valve is closed
•Clogged Check Valve
•Leaks on compressor fittings or down
stream
•WARNING: Bleed tank� Disassemble Check
Valve assembly, clean or replace faulty parts�
•DANGER: Do not disassemble Check Valve
with air in tank
•Check fittings**
•Tank pressure builds up slowly •Clogged air filter
•Air leaks
•Clean or replace filter element
•Tighten joints
•Fuse or breaker trip
•Wrong size fuse or breaker
•Wrong size wire
•Motor starting under load
•Loose wires
•Compressor is being overworked
•Check fuse/breaker size
•Check volts/amps
•Make sure pump is unloading when
compressor shuts off
•Check electrical connections
•Compressor should not run more than 6 out of
10 minutes on average
•Overheating compressor •Poor ventilation
•Internal pump problem
•Relocate compressor
•Have unit serviced/call C-Aire
•Short cycling •Condensation in the tank • Drain weekly
* Thermal overload tripped�
** Or isolate compressor from system to determine leak location�
MODEL
SERIAL #
MFG #
Make a permanent record of the Model and Serial Number of your compressor by filling in the fields above� You’ll save time and expense
by including this reference identification on replacement part orders�
380 West 1st Street, Dresser, WI 54009 // 800�762�2247//651�462�3440//www�cairecompressors�com

10
WARRANTY
OIL FREE COMPRESSOR
C-Aire Inc� warrants its compressors to be free from defects in material and workmanship subject to the following provisions:
STANDARD WARRANTY DURATION: 12 months from date of install�
WHAT THE WARRANTY COVERS DURING THE WARRANTY DURATION: All components on the compressor except
for those items listed in the section titled “What is excluded from warranty coverage”�
WHAT IS EXCLUDED FROM THE WARRANTY COVERAGE:
A) Air intake filters, which is a maintenance item�
B) Failure due to improper installation, insufficient power, or absence of mounting pads on floor mounted units�
C) Freight damaged items� (REJECT THE SHIPMENT or note damage on Bill of Lading)
D) Any labor, freight or transportation charges that are not pre-approved by C-Aire�
E) Labor charges incidental to the installation, electrical connections, repair, service, adjustment, removal, or replacement�
F) Misuse or abuse�
G) C-AIRE HAS NO OBLIGATION UNDER THESE WARRANTIES OR OTHERWISE (REGARDLESS OF THE
FORM OF ACTION) FOR SPECIAL, INDIRECT, CONSEQUENTIAL OR INCIDENTAL DAMAGES, INCLUDING
WITHOUT LIMITATION, LOSS OF USE, LOST PROFITS, LOST INCOME, WHETHER SUFFERED BY THE
BUYER OR A THIRD PARTY.
C-AIRE’S OBLIGATIONS: C-Aire will repair or replace, at C-Aire’s option, defective parts, pay reasonable labor costs
of replacing or repairing the defective part, and pay ground freight for the return of defective parts and shipment of the
replacement part(s)� ALL LABOR AND FREIGHT MUST BE PRE-APPROVED AND ARRANGED BY C-AIRE�
PURCHASER’S OBLIGATION:
1) Properly install and start up the compressor�
2) Ensure the compressor is sized properly for the application� The compressor should run no more than 30 minutes/day on
average after initial system fill�
3) Maintain proof of purchase�
WARRANTY CLAIMS: Please contact C-Aire at 1-800-762-2247 or 651-462-3440� Please have your model and serial
number available�

11

12
380 West 1st Street, Dresser, WI 54009
800�762�2247 - 651�462�3440
www�cairecompressors�com
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