Powerex SBS Series User manual

7.5 & 10 HP Basemount & Tankmount Scroll Air Compressors
Please read and save these instrucons. Read carefully before aempng to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety informaon. Failure to comply with instrucons could result in personal injury and/or
property damage! Retain instrucons for future reference.
Descripon
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 1 of 16
General
The Powerex Oil-less Rotary Scroll Air Compressor has advanced scroll
compressor technology through the development of a completely
oil-less unit. The Powerex Scroll Compressor oers a dynamically
balanced air end which insures vibraon-free operaon. The rotary
design permits a connuous 100% duty cycle. No oil separaon, oil
ltraon, or inlet valves are required on the Powerex Scroll unit.
Base mount assemblies are intended for use as replacements on
original Powerex Scroll systems and are not suitable for use as is
to provide compressed air for most applicaons. In general, an air
receiver and appropriate piping and valves, along with electrical
controls (base mounts may be provided with controls by Powerex)
are needed to provide a funconal system. Powerex tank mounted
units, simplex or duplex are complete and ready to use.
The base mount assemblies include the scroll pumps, with provision
for intake lters to be mounted on the pump. The scroll pump is belt
driven using a 2 pole three phase electric motor. The electric motor
is mounted on a slide base to facilitate adjusng belt tension. The
belt drive is covered by a sheet metal belt guard. The pump delivers
compressed air into the aer cooler that uses the air from the pump
blower fan to bring the compressed air temperature near ambient.
A check valve is installed in Powerex Scroll systems aer the aer
cooler. Compressed air is routed to the receiver tank. A pressure relief
valve is installed on systems where there is a possibility of accidentally
closing a shut o valve between the compressor and air receiver.
Controls on Simplex systems respond to pressure demand and
engage the electric motor when pressure in the receiver tank drops
to the cut in seng. (Approximately 95 psig) The motor runs and the
pump delivers air unl the cut o point is reached (Approximately
115 psig). On Duplex systems, the controls alternate which pump runs
to respond to the air demand. If air demand exceeds the ability of
one pump, the second, or lag, pump is engaged at the lag switch cut
in point. It runs unl the lag switch cut o is achieved, while the lead
pump connues to run unl the lead switch cut o is achieved.
The aer cooler on Powerex Scroll systems is mounted on resilient
mounts to prevent damage to the cooler. Piping is designed to
accommodate temperature and vibraon encountered in normal use.
Powerex Scroll systems can be provided with separately powered
electric mer controlled automac tank drains to expel condensaon
that accumulates in the compressor tank. Make sure the tank drain is
working properly by operang the manual drain regularly to check for
accumulated condensaon. Oponal tank lining can be provided to
assure minimal corrosion of the tank interior. Dispose of condensate
as required by applicable regulaons.
Powerex Scroll systems can also be provided with dryers. Dryers must
be provided with electrical power from a separate source and cannot
be powered from the control system, as the controls are not designed
for this load. Dryers will also expel water and the condensate must be
disposed of according to applicable regulaons.
SPECIFICATIONS
Product SBS, STS, and STD series
Performance Specicaons See Product Data Sheet
California Ordinance 462
(L) (2)
Tank Mount units meet the requirements
of this ordinance
Compression Cycle Scroll
Control Panel UL508A Listed (panels are oponal)
Drive 2-3V Belts
Lubricaon Grease lled bearings
Motor Overhead Protecon IEC Motor overload relay (oponal)
Operang Temperature 34°F - 104°F (1°C - 40°C) at inlet
Operang Voltages 1Ø 208-230 Volts, 60 Hz
3Ø 208-230/460 Volts, 60 Hz
Outlet Air Connecons Model specic - see detail drawings
Overpressure Protecon ASME safety valve factory set and sealed
Standard Pressure Sengs Simplex: 95-115 psi
Duplex: 90-110 psi; 95-115 psi

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 2 of 16
This manual contains informaon that is very important to know
and understand. This informaon is provided for SAFETY and to
PREVENT EQUIPMENT PROBLEMS. To help recognize this informaon,
observe the following symbols. MAKE SURE EVERYONE OPERATING
OR SERVICING THE COMPRESSOR READS AND UNDERSTANDS ALL
THE INFORMATION PROVIDED.
Warning indicates a potenally hazardous
situaon which, if not avoided, COULD result in
death or serious injury.
Cauon indicates a potenally hazardous situaon
which, if not avoided, MAY result in minor or
moderate injury.
Noce indicates important informaon, that if not
followed, may cause damage to equipment.
NOTE: Note indicates informaon that requires special aenon.
Safety Guidelines
Danger indicates an imminently hazardous
situaon which, if not avoided, WILL result in
death or serious injury.
Compression Cycle
The Powerex Oil-less Rotary Scroll Air Compressor is based on the
theory of scroll compression. A scroll is a free standing, intricate
spiral bounded on one side by a solid, at plane or base. A scroll set,
the basic compression element of a scroll compressor, is made up
of two idencal spirals which form right and le hand parts. One of
these scroll components is indexed, or phased 180°, with respect to
the other so the scrolls can mesh. Crescent-shaped gas pockets are
formed and bounded by the spirals and the base plate of both scrolls.
As the moving scroll is orbited around the xed scroll, the pockets
formed by the meshed scrolls follow the spiral toward the center and
diminish in size. The moving scroll is prevented from rotang during
this process so the 180 degree phase relaonship of the scrolls is
maintained. The compressor’s inlet is at the outer boundary of the
scrolls. The compressed gas is discharged through the outlet at the
center of the xed scroll so no valves are needed.
Tip Seal
The p seal on the scroll compressor is self-lubricated and allows
the unit to operate eciently without oil and expensive ltraon. On
7.5 and 10 HP models, p seals must be replaced every 8,000 hours
of operaon.
Bearings
The bearings on the scroll compressor are regreaseable to allow
extended compressor life. On 7.5 and 10 HP models, grease must be
replaced every 8,000 hours of operaon.
Hour Meter
The hour meter on the scroll compressor indicates the actual
number of hours the unit has been in operaon. The hour meter
is also used to determine maintenance and service ming. An hour
meter must be installed with every scroll compressor.
Condensate Drain Valve
A condensate drain valve must be installed on every tank to allow
removal of the liquid which will collect during compressor operaon.
Drain liquid from tank daily.
Breathable Air Warning
This unit is NOT equipped and should NOT be used “as is”
to supply breathing quality air. For any applicaon of air for
human consumpon, you must t the air compressor/pump
with suitable inline safety and alarm equipment. This addional
equipment is necessary to properly lter and purify the air to
meet minimal specicaons for Grade D breathing as described
in Compressed Gas Associaon Commodity Specicaon for air,
OSHA, ANSI and/or Canadian Standards Associaons (CSA).
DISCLAIMER OF WARRANTIES
IN THE EVENT THE COMPRESSOR IS USED FOR THE PURPOSE
OF BREATHING AIR APPLICATION AND PROPER IN-LINE SAFETY
AND ALARM EQUIPMENT IS NOT SIMULTANEOUSLY USED,
EXISTING WARRANTIES ARE VOID, AND POWEREX DISCLAIMS
ANY LIABILITY WHATSOEVER FOR ANY LOSS, PERSONAL INJURY
OR DAMAGE.

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 3 of 16
Installaon
Receiving the Unit
Immediately upon receipt of the Powerex Scroll Compressor, the
unit should be inspected for any damage which may have occurred in
shipment. Any shipping damage must be immediately led with the
freight carrier.
The compressor nameplate should be checked to see if the unit is
the correct model and voltage as ordered.
Applicaon
When the scroll compressor is to be used in applicaons other
than the compressing of atmospheric air, please contact a Powerex
representave for engineering and warranty informaon at 1-888-
769-7979.
Installaon Site
1. The scroll compressor must be located in a clean, well lit and
well venlated area.
2. The area should be free of excessive dust, toxic or ammable
gas, moisture, water, and direct sunlight.
3. Never install the compressor where the ambient temperature is
higher than 104°F or where humidity is high.
4. Clearance must allow for safe, eecve inspecon and
maintenance.
MINIMUM CLEARANCES
Above 24 in
Drive belt side 12 in
Other sides 20 in
5. If necessary, use metal shims or leveling pads to level the
compressor tank or base mount unit. Never use wood to shim
the unit.
Venlaon
1. If the scroll compressor is located in a totally enclosed room, an
exhaust fan with access to outside air must be installed.
2. Never restrict the cooling fan exhaust air.
3. Never locate the compressor where hot exhaust air from other
heat generang units may be pulled into the unit.
Wiring
Refer to the general product manual. All electrical hook-ups must
be performed by a qualied electrician. Installaons must be in
accordance with local and naonal electrical codes.
Use solder-less terminals to connect the electric power source.
Piping
General Guidelines
Refer to the general product manual.
1. Make sure the piping is lined up without being strained or
twisted when assembling the piping for the compressor.
2. Appropriate expansion loops, or bends, should be installed at
the compressor to avoid stresses caused by changes in hot and
cold condions.
3. Piping supports should be anchored separately from the
compressor to reduce noise and vibraon.
4. Never use any piping smaller than the compressor outlet
connecon.
5. Use exible hose to connect the outlet of the compressor to the
piping so that the vibraon of the compressor does not transfer
to the piping. n base mounted scroll compressors, all ngs
including check valves and safety valves should be installed aer
a exible hose.
Remote Intake Piping
Powerex Compressor Systems with pipe thread connectors on the
intake lters are intended for installaon with remote air intake.
Piping for the remote intake system must be installed at the nal
operang site.
Under some condions, the intake piping may facilitate the
condensaon of humidity in the intake air stream into liquid water.
Always install drip legs with sucient capacity to capture liquid
water in the intake piping before the air lters. Drip legs must be
sized with low enough air velocity to make sure they are eecve
at capturing liquid water in the intake air and must be maintained
(drained) at frequent intervals to make sure they remain eecve.
Safety Valves
Tank mounted compressors are shipped from the factory with
safety valves installed in the tank. Base mounted scroll compressors
are shipped from the factory with the safety valves loose for eld
installaon. The ow capacity of the safety valve is equal to or greater
than the capacity of the compressor.
1. The pressure seng of the safety valve must be no higher than
the maximum working pressure of the tank.
2. Safety valves should be placed ahead of any possible blockage
point in the system, i.e., the shuto valve.
3. Avoid connecng the safety valve with any tubing or piping.
4. Manually operate the safety valve every six months to avoid
scking or freezing.
The intake lters supplied by Powerex will not
stop ingeson of liquid water by the pumps. Liquid
water going into the pumps will damage the pumps and void the warranty.

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 4 of 16
Operaon
Before Start Up
1. Make sure all safety warnings, labels, and instrucons have
been read and understood before connuing.
2. Remove any shipping materials, brackets, etc.
3. Conrm that the electric power source and ground have been
rmly connected.
4. Be sure all pressure connecons are ght.
5. Check to be certain all safety relief valves, etc., are correctly
installed.
6. Check that all fuses, circuit breakers, etc., are the proper size.
7. Make sure the inlet lter is properly installed.
8. Conrm that the drain valve is closed.
9. Make sure that any oponal dryers are powered on and that the
appropriate valves are open.
Start Up and Operaon
1. Follow all the procedures under “Before start up” before
aempng operaon of the compressor.
2. Switch the electric source breaker on.
3. Open the tank discharge valve completely.
4. Check that the compressor operates without excessive vibraon,
unusual noises or leaks.
5. Close the discharge valve completely.
6. If the pressure does not rise on a three phase unit, turn the unit
o. Have a qualied electrician switch the breaker OFF and
exchange the L1 and L2 connecons (two out of three phases of
electric source) inside the magnec enclosure.
7. Check the discharge pressure. Also make sure the air pressure
rises to the designated pressure seng by checking the
discharge pressure gauge.
8. Check the operaon of the pressure switch by opening the tank
outlet valve and conrming the compressor starts as pressure
drops.
System Flow Schemacs
Basemount
Tankmount Simplex
(diagram is typical, actual pipe and connecon size may vary)
Tankmount Duplex
(diagram is typical, actual pipe and connecon size may vary)

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 5 of 16
Maintenance
Notes:
1. Inspect and perform maintenance periodically according to maintenance schedule.
2. The maintenance schedule relates to the normal operang condions. If the circumstances and load condion are adverse, shorten the
cycle me and conduct maintenance accordingly.
3. The tension of the V-belt should be adjusted during the inial stage and inspected every 2,500 hours aerwards. Proper belt tension is just
enough to prevent slippage. See following secon on belt tensioning method.
4. See Compressor Pump Manuals for replacement or service procedures.
Pump Maintenance
See the detailed pump maintenance manual included in the manual set.
Item Acon Needed OPERATING HOURS Remarks
500 2000 4000 8000 12000 16000 24000
Pump Replace ▲
Tank Drain moisture Daily
Inlet Air Filter Inspect
Replace ● ▲ (Every 2,500 hours or less) Element Part # ST073907AV
Blower Fan Clean ● ●
Fan Duct Clean ● ●
Compressor Fins Clean ●(Every 2,500 hours or less)
Bearings Grease ▲ ▲ Service Center only
Tip Seal Replace ▲ ▲ ▲ Every 8,000 hours
V-Belt Inspect
Replace Note 3 ● ▲▲▲▲▲
Pressure Switch Conrm
operaon ● ●
Magnec Starter Inspect ● ● Replace if contact points deteriorated
Safety Valve Conrm
operaon ●(Every 2,500 hours or every 6 months, whichever comes rst)
Pressure Gauge Inspect ●(Every 2,500 hours or less
LEGEND
●Inspect
▲Replace

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 6 of 16
Adjusng Belt Tension
Belt tension is set at the factory. If slippage is detected, reset the
tensions as follows:
Aer the rst 200 to 500 running hours or at any me chirping is
heard on start up, check the belt tension. If tension is below 25 pounds
on any belt, increase the center distance using the motor slide base
so that belt tension is 45 to 50 pounds. The motor slide base details
are shown below. If installing new belts see the procedure below.
New Belt Installaon Procedure
1. Loosen the two slide bolts near the motor pulley and the two
slide bolts on the front edge of the base. Keep enough torque on
them to take up any slack between the slider and the main base,
but enough slack to allow the slider to move.
2. Tighten the belt adjustment bolt using a torque wrench to 45
inch pounds. This will bring the belts to the proper tension.
3. Tighten the slider bolts, the two on the front edge of the base,
then the two slider bolts closest to the motor pulley so the belt
tension is 45 to 50 pounds.

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 7 of 16
Part Idencaon and Parts List:
General Basemount:
Key No. Descripon 7.5 HP 10 HP Quanty
1 Pump SL020500AV SL021000AV 1
2Motor 208-230/460V 60Hz 2 Pole ODP MC304232AV MC304234AV 1
Motor 575V 60Hz 2 Pole ODP MC304209AV MC304236AV 1
Motor 208-230/460V 60Hz 2 Pole TEFC MC304233AV MC304235AV 1
*3 2 Groove 3V Drive Sheave with Taper Bushing (for ODP Motor) PU202649AV PU202648AV 1
2 Groove 3V Drive Sheave with Taper Bushing (for TEFC Motor) PU202651AV PU202648AV 1
*4 3VX Belt BT024000AV BT023900AV 2
5Belt Guard – Back BG308500AV BG308500AV 1
6 Belt Guard – Front (Wave Logo Cutout) BG308400AV BG308400AV 1
7Belt Guard Support Bracket SL051300AV SL051300AV 3
8Foot Bracket SL051300AV SL051300AV 4
9Aer Cooler SL060000AV SL060000AV 1
*10 Outlet Flex Hose SM008113AV SM008113AV 1
11 Belt Guard Side Aer Cooler Mounng Bracket SL060100AV SL060100AV 4
*12 Inlet Air Filter Threaded Adapter IP638900AV IP638900AV 1
*13 Inlet Air Filter Adapter Gasket IP639000AV IP639000AV 1
14 Inlet Filter Assembly (Non-Remote) 91907690 91907690 1
*15 Inlet Air Filter Element ST073907AV ST073907AV 1
*16 Check Valve IP087700AV IS025003AV 1
*17 Relief Valve V-215100AV V-215100AV 1
*18 Pump Side Aer Cooler Mounng Bracket SL051400AV SL051400AV 1
19 Heat Shield SL060300AV SL060300AV 1
*Not visible in diagram
9
819
6
11
*15 14
2
*4
7
1
5
*3

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 8 of 16
Tankmount Simplex:
Key No. Descripon 7.5 HP 10 HP Quanty
20 Air Receiver 120 Gallon TQ003201ST TQ003201ST 1
Air Receiver 200 Gallon JP000600ST JP000600ST 1
Air Receiver 240 Gallon Grass Hopper JQ000100AJ JQ000100AJ 1
21 Vibraon Isolaon Pads JP004101AV JP004101AV 8
22 Pressure Switch CW207573AV CW207573AV 1
*23 Hour Meter N/A N/A
208-230V 60Hz PE001002AV PE001002AV 1
460V 60Hz PE001003AV PE001003AV 1
*24 Starter Assembly Complete - 208-230V 60Hz JP001080AJ JP001083AJ 1
Contactor 208-230V 60Hz PE000113AV PE000115AV 1
OL Relay 208-230V 60Hz PE000208AV PE000209AV 1
Starter Assembly Complete - 460V 60Hz JP001081AJ JP001084AJ 1
Contactor 460V 60Hz PE000108AV PE000110AV 1
OL Relay 460V 60Hz PE000206AV PE000207AV 1
Starter Assembly Complete - 575V 60 Hz JP001105AJ JP001107AJ 1
Contactor 575V 60Hz PE000121AV PE000121AV 1
OL Relay 575V 60Hz PE000205AV PE000206AV 1
25 Electric Automac Timer Drain SL300701AV SL300701AV 1
*26 Tank Pressure Gauge GA016701AV GA016701AV 1
*27 Tank Safety Valve V-215400AV V-215400AV 1
*Not visible in diagram
21
22
*24
*23
20
25

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 9 of 16
Tankmount Duplex:
Key No. Descripon 7.5 HP 10 HP Quanty
28 Refrigerated Dryer ACO016025 ACO016035 1
29 Regulator with Outlet Pressure Gauge ST178409AJ ST178409AJ 1
30 Coalescing Final Filter ST178108AV ST178108AV 1
For desiccant dryer parts, see dryer manual included in manual package)
Key No. Descripon 7.5 HP 10 HP Quanty
31 Air Receiver 120 Gallon Grass Hopper JQ000900AJ JQ000900AJ 1
Air Receiver 200 Gallon Grass Hopper JQ001100AV JQ001100AV 1
Air Receiver 240 Gallon Grass Hopper JQ000100AJ JQ000100AJ 1
32 Vibraon Isolaon Pads JP004101AV JP004101AV 16
33 Control Assembly Complete - 208V 60Hz PSI20072AJ PSI200A2AJ 1
Control Assembly Complete - 230V 60Hz PSI20073AJ PSI200A3AJ 1
Control Assembly Complete - 460V 60Hz PSI20074AJ PSI200A4AJ 1
Control Assembly Complete - 575V 60Hz PSI20077AJ PSI200B7AJ 1
30
29
28
33
32
31

7.5 and 10 HP Base Mount and Tank Mount
Scroll Air Compressors
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN594102AV •03/2017
Page 10 of 16
Duplex Electrical Parts
40
41
43
42
38 38
36 37
39
34 36
35
Key No. Descripon 7.5 HP 10 HP Quanty
34 Control Transformer PS005834AV PS005834AV 1
35 Primary Fuse JP007703AV JP007703AV 2
36 Secondary Fuse JP007711AV JP007711AV 1
37 Contactor 208V 60Hz PE000103AV PE000103AV 2
Contactor 230V 60Hz PE000103AV PE000103AV 2
Contactor 460V 60Hz PE000102AV PE000102AV 2
Contactor 575V 60Hz PE000102AV PE000102AV 2
38 Motor Protector 208V 60Hz PE000308AV PE000308AV 2
Motor Protector 230V 60Hz PE000308AV PE000308AV 2
Motor Protector 460V 60Hz PE000306AV PE000306AV 2
Motor Protector 575V 60 Hz PE000306AV PE000306AV 2
39 Alternator Relay JQ000609AV JQ000609AV 1
40 Control Selector Switch PE000548AV PE000548AV 1
41 Hour Meter PE001004AV PE001004AV 2
42 Lead Pressure Switch CW207591AV CW207591AV 1
43 Lag Pressure Switch CW207591AV CW207591AV 1
*Not visible in diagram