Powerex MTSD0303 User manual

Scroll Medical & Laboratory Compressed Air Systems
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
IN907800AV •08/2018
Page 1 of 40
The Powerex Scroll Medical Compressed Air Source Systems are
intended to provide Medical Air as where risk meets the Category
3 requirements in NFPA99. Medical Air is intended for use in human
respiraon. Standard Laboratory Compressed Air Source systems are
intended for use in facilies where the risk is less than Category 3,
or applicaons outside of the scope for NFPA99, and not intended
for human respiraon. The systems include intake ltraon, electric
motor driven compressor pumps, aercoolers, condensate traps,
air storage receiver with automac condensate drain, dryer systems
with ltraon and bypass valves, dew point monitor, CO monitor if
applicable, and controls to operate the system.
Safety Guidelines
A SEPARATE SAFETY BOOKLET IS PROVIDED ALONG WITH THIS
MANUAL. READ AND UNDERSTAND THE SAFETY BOOKLET. 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.
Danger indicates an imminently hazardous
situaon which, if not avoided, WILL result in death
or serious injury.
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.
Unpacking
Immediately upon receipt of the vacuum system, inspect for any
damage which may have occurred during shipment. Repair or replace
damaged items before use. The name-plate should be checked to
verify the correct model and voltage.
Do not operate unit if damaged during shipping,
handling or use. Damage may result in unsafe
condions and cause injury or property damage.
Compressed Air Type Oilless air meeng requirements of Type 0
Powerex Oilless Scroll compressor pumps
Medical Systems:
- Final ltraon to 0.5 micron or beer, regulated
for 50-55 psig
- Dew point alarm: High dew point at 35°F
- CO Alarm: High CO at 10 ppm
- Dryer purge saving control on at -15°F; o at
-10°F
Laboratory Systems:
- Final ltraon to 0.5 micron or beer, regulated
for 90-95 psig
- Dew point alarm: High dew point at -20°F
(Standard)
- CO alarm (oponal at 10 ppm)
- Dryer purge saving control on at -45°F; o at
–40°F
Lubricaon: Grease lled bearings, PTFE compound p seals
Maximum System
Pressure
Medical Systems: 116 psig
Laboratory Systems: 145 psig
Motor Protecon
System
Motor protector circuit breakers
Air Receiver ASME Code, rated 165 psig or higher
Control Panel UL508 Compliant
Misc. Cal. OSHA 462 (L) (2) Compliant
Cal. OSHPD OSP – 0380-10
Specicaons

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 2 of 40
Specicaons (Connued)
HP Air End Discharge Pressure (PSIG) Air Delivery
(SCFM)
3SLAE03EB 95-115 (125-145 oponal) 8.8 @ 100 PSIG
7.5 @ 145 PSIG
5 SLAE05E 95-115 (125-145 oponal) 15.2 @ 100 PSIG
5 SLAE05EHP 95-115 (125-145 oponal) 12.5 @ 100 PSIG
NOTE: For system electrical informaon, see wiring diagram
shipped with unit.
Compressor Performance (per basemount)
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.
For Laboratory Systems
Components
Powerex open scroll systems are designed to supply connuous oil-
free air by using the most advanced scroll technology.
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. Each compressor
shall be belt driven oil-less rotary scroll single stage, air-cooled
construcon with absolutely no oil needed for operaon. Direct drive
compressors shall not be used. The rotary design shall not require any
inlet or exhaust valves and shall be rated for 100% connuous duty.
Systems consist of mulple compressor pumps that are automacally
controlled and alternated to equalize usage and wear. Medical
systems have one or more pumps designated as the reserve and their
output is not ulized for normal system capacity rangs.
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 that the 180° phase relaonship of the scrolls
is maintained. The compressor’s inlet is at the outer boundary of the
scrolls. The entering gas is trapped in two completely opposite gas
pockets and compressed as the pockets move toward the center. The
compressed gas is discharged through the outlet at the center of the
xed scroll so no valves are needed.
Compressor systems are ed with single point connecon intake
manifolds. For medical systems the manifold must be connected to
air intake piping located as specied in NFPA99. Lab systems may
ulize room air for the intake. Parcle ltraon is provided by the
intake lter assemblies in each branch of the compressor system.
When remote intake systems take in humid warm air from outdoors,
and route it through air-condioned buildings, water will condense in
the intake piping. NOTICE: Water will destroy the compressor pump
if it is ingested. The air lters will not stop water. Water trapping drip
legs must be designed, installed and maintained by the responsible
pares. The intake system is also equipped with isolaon valves
allowing the line to be closed if a branch is opened for service. The
ball valve handles have been removed and shipped separately to help
avoid accidental closure of the valves when the system is running.
NOTICE Running the pumps with the intake valve closed will damage
the pumps. Powerex recommends that the system be locked out if
the valve is closed.
Each compressor pump is ed with exible connecons on the
intake and exhaust side. The compressed air from each pump is
monitored by a temperature switch that will work with the controls
to shut down the system if the air temperature exceeds design limits.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 3 of 40
The compressed air is then carried to the aer cooler. During aer
cooling, condensaon is formed and captured in the condensate trap
downstream from the aer cooler. The condensate trap collecon
bowl is piped to an automac drain system. The liquid formed is
condensed atmospheric water vapor and it may be allowable to
drain into your local sewer system. Check local regulaons for actual
requirements.
The compressor pumps are driven by three phase electric motors
acng through vee belt drives. The belts are carefully engineered
and selected for durability and reliability. When the vee belts run,
especially in the rst few hundered hours of operaon, dust is
generated as the prole of the belt wears in to match the grooves in
the drive and driven sheaves. The dust is normal and will not cause
any operang problems. If the belts are not slipping, no adjustement
of tension is necessary. If tension adjustement or belt replacement
does become necessary, the motor mount is designed to act as a slide
base tensioning systems and detailed instrucons are provided in this
manual.
Aer the condensate trap, a check valve and a ball valve is installed
in each branch of the compressor system. This valve allows an unused
branch to be closed o from the system. If the valve is ulized to allow
service to be performed, a locking cover must be installed to meet
Lock out Tag out requirements. A relief valve is installed upstream
of the ball valve, so that if the ball valve is closed and the pump is
started, the relief valve will open and prevent catastrophic pressure
rise and damage. The relief valve is not intended to allow connuous
operaon of the pump with the ball valve closed.
Compressed air systems contain electrical energy.
Remove and lock out all energy sources from the
system if any maintenance is being performed where the energy may
cause the pump or motor to operate.
Compressed air is collected and piped to the air receiver. The air
receiver has a bypass valve manifold installed for use if necessary. The
air receiver has an an-corrosion lining. Each air receiver has an ASME
safety relief valve to prevent system pressure from exceeding the
design capability of the vessel. A mechanical pressure gauge allows
visual vericaon of the system pressure. Condensaon that forms
aer the aer cooler will collect in the receiver. An automac tank
drain is installed along with a manual drain valve to remove the liquid.
Since the compressors are oilless, the liquid formed is condensed
atmospheric water vapor and it may be allowable to drain into your
local sewer system. Check local regulaons for actual requirements.
A transparent tube is installed in the lower secon of the air receiver
to allow visual vericaon that the condensate is being removed from
the vessel.
Risk of Injury or death. Do not modify the air
receiver or the ASME safety relief valve. Do not
obstruct or restrict the outlet of the ASME safety relief valve. Do not
operate the system at pressures higher than the rated pressure. Do not
perform any work on the receiver or connected components while energy
(compressed air) is present.
Compressed air from the receiver is routed to the dryer secon
where duplex desiccant dryers remove water vapor to the specied
dew point of the system. A desiccant dryer uses chemical reacons
with water vapor and the surface of the desiccant material to hold
water molecules when compressed air is owing through the bed.
The bed is then regenerated using some of the dry air in the “purge”
mode at low pressure to reverse the chemical reacon. The dryer
controls automacally cycle the beds to extract moisture from the
compressed air. Each branch of the duplex desiccant dryer system is
equipped with isolaon valves so that one dryer can be online and
in use while the other is idle. Each branch has lters and pressure
regulators as needed. Dryer inlet ltraon includes mechanical
cyclonic water droplet separaon as well as coalescing lters. Dryer
outlet ltraon prevents any desiccant dust from leaving the system.
Aer the dryers, the compressed air is connected to dew point and
CO monitors. (CO monitor is oponal for laboratory systems). The
monitors take a small amount of sample air. The dew point monitor
works with the dryer controls to minimize the amount of purge air
used to regenerate the desiccant beds. The Dew Point and CO monitor
go into alarm mode if allowable parameters are exceeded.
Controls
The disconnects and protecon devices in the Powerex control
system are for the motor branch circuits, accessory supply circuits and
for the control circuit only. The controls on the Powerex Laboratory
Open Scroll System do not include a service disconnect and circuit
protecon for the supply circuit. Selecon and installaon of these
items must be provided in compliance to local and naonal codes in
accordance with each facility’s need.
The PLC automacally alternates the lead designaon and brings
on lag pumps as needed, equalizing run me on the pumps in the
system. The touch screen HMI (Human Machine Interface) panel on
the front allows operaon and monitoring of the system. The touch
screen provides the user with displays showing the operang status
and allows the user to access features of the control system. The
control panel also allows communicaon using the BACnet® protocol.
The control panel includes Hand-O-Auto selector switches for
each pump so that a pump can be held on (or o). This can be useful
if maintenance or diagnosc procedures are being performed.
The transformer is sized for the loads imposed by the Powerex
factory controls and should not be ulized for any other purpose.
Premium control panels ulize a backup transformer with a reserve
transformer in use alarm.
Local alarms are provided for low pressure and general fault
condions. The general fault alarm includes high temperature,
reserve transformer in use, motor overload and reserve pump in use
(when specied). The wiring connecon point for the alarms is on the
terminal strip in the control panel box, with good condions being
contacts closed. (If a wire connecon is lost, the result is an alarm.)

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 4 of 40
Wiring
Lock out and tag out the electrical supply before
servicing the equipment.
requirements.
Electrical shock hazard. Make sure the system
is grounded in accordance with NEC and local
All electrical hook-ups must be performed by a qualied electrician.
Installaons must be in accordance with local and naonal electric
codes. Make sure power supply conductors are sized adequately for
full system demand.
Use solder-less terminals to connect the electrical 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 system.
2. Appropriate expansion loops or bends should be installed at
the system to avoid stresses caused by changes in hot and cold
condions.
3. Piping supports should be anchored separately from the
system to reduce noise and vibraon.
4. Never use any piping smaller than the system outlet connecon.
5. Use exible hose to connect the outlet of the system to the
piping so that the vibraon of the system does not transfer to
the piping.
water going into the pumps will damage the pumps and void the warranty.
The intake lters supplied by Powerex will not
stop ingeson of liquid water by the pumps. Liquid
Remote Intake Piping
Use a exible connector to join the facility piping to the system
single point intake.
Size the remote intake piping to minimize pressure loss due to ow
fricon. Use the following guidelines to determine the minimum pipe
size. Larger size piping will reduce losses.
A compressor system intake must be located to comply with
applicable regulaons and should be arranged to provide the cleanest
air possible for compression. Follow all requirements of NFPA 99 for
locaon and materials.
In addion, the inlet system must be designed to avoid pressure
drop or creang a signicant vacuum on the intake side of the pumps
and to avoid any condensaon formed by cooling of humid intake
air from reaching the pumps. A drip leg, or mulple drip legs may
be necessary. Drain the drip legs frequently to prevent water from
reaching the pumps. Water will damage the pump and void the
warranty.
To determine the minimum required pipe size for a compressor
system intake, calculate the equivalent straight length of the run.
Installaon
Frames or Tank Mount Structure
Powerex designed the system to bear the weight and stress of
the compressor pumps, controls, and receiver tank. When liing
the system, use the designated fork li slots or rig straps to li the
main system skid. Do not aempt to li the system using individual
component liing hooks and eyes. Piping may need to be supported
to avoid damaging the supplied ex connectors for intake and exhaust.
Operaon at High Altudes
Compressor pumps are sensive to reduced atmospheric pressure
encountered as altude increases. Powerex will adjust the operang
set points to compensate for altude if the original order is designated
for high altude and the expected condions provided to us.
Disconnect, tag and lockout power before
aempng to install, service, relocate or perform
any maintenance.
Do not li or move unit without appropriately rated
equipment. Be sure the unit is securely aached to
liing device used. Do not li unit by holding onto tubes or coolers. Do not
use pumps to li other aached equipment.
Installaon Site
1. The compressor system 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
gases and moisture.
3. Never install the system where the surrounding 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 inches
Other sides 24 inches
Control Panel side 36 inches
5. If necessary, use metal shims or leveling pads to level the
system. Never use wood to shim the unit.
Venlaon
1. If the oil-less compressor system is located in a totally enclosed
room, an exhaust fan with access to outside air make up air
must be installed. Room temperature must remain below
104°F. Circulaon must be sucient to prevent local hot spots.
2. Never restrict the cooling fan exhaust air. Maintain a minimum
of 24 in. of clearance around the enre unit (36 in. is preferred).
3. Never locate the compressor where hot exhaust air from other
heat generang units may be pulled into the system.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 5 of 40
The equivalent straight length is the length of all the pipe needed
from the ex connector to the origin point, plus a factor for each
elbow or T.
If system extends beyond 600 equivalent straight feet, use one size
larger pipe.
Pipe should be smooth ID, if rough pipe is used increase by one size.
Pipe Size Equivalent length for 90°
elbow, cross, or tee
Equivalent length for
45° elbow
1.5 3.75 feet 1.8 feet
2.0 5.0 feet 2.5 feet
2.5 6.25 feet 3.1 feet
3.0 7.5 feet 3.8 feet
3.5 8.78 feet 4.4 feet
4.0 10.0 feet 5.0 feet
5.0 12.5 feet 6.25 feet
Size the piping for the maximum rated ow of the system. Medical
air systems have one pump in reserve per NFPA 99.
PIPE SIZE REQUIREMENTS
System CFM
Minimum
Pipe Size for
100 feet
Minimum
Pipe Size for
300 feet
Minimum
Pipe Size for
600 feet
15 1.25 1.5 1.5
20 1.25 1.5 1.5
25 1.25 1.5 2
30 1.25 1.5 2
35 1.5 22.5
40 1.5 22.5
45 1.5 22.5
50 1.5 22.5
60 22.5 2.5
65 22.5 3
75 22.5 3
70 2 2.5 3
85 22.5 3
90 2 2.5 3
100 2 3 3.5
110 2.5 33.5
115 2.5 33.5
125 2.5 33.5
150 2.5 33.5
170 2.5 3.5 4
190 3 3.5 4
210 3 3.5 4
230 3 3.5 4
250 33.5 4
260 3.5 45
300 3.5 45
350 3.5 45
375 3.5 45
500 45 6
If the system extends beyond 600 equivalent straight feet, use one size
larger pipe.
Type Pump intake CFM per HP
Various scroll and oilless reciprocang 3

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 6 of 40
4. Follow steps 1 to 3 for ex line from dryer package to inlet of
receiver tank (if applicable).
NOTE: All piping is provided and sealed for this poron of
installaon.
5. If applicable, locate and aach intake inline air lter to outside
source air or header. A ex line is provided for aaching intake
of compressors to air lter assemblies.
6. Connect outlet of tank/dryer module to outlet source piping.
Electrical Wiring of System Shipped In Separate Modules
Provide electrical power in accordance to NEC
and local codes. Connecon of wiring should be
performed by a qualied electrician.
1. Systems are provided with overload protecon. A main system
service disconnect must be installed. Powerex recommends
the main system disconnect should be placed as close as
possible to the system.
2. Refer to the system wiring diagram. Temperature switches
shutdown the compressor when temperature reaches above a
pre-set limit. Connect dryer power cords, electric drain power
cord, dew point power cord, and alarm wiring to the master
control panel.
3. The system has a terminal strip in the control panel with
“landing points” for the master alarm panel connecons.
Locate the supplied landing points and install wire connecons
as appropriate.
4. Wiring connecons can become loose during shipping and
storage. Check all connecons for integrity when installing and
starng unit.
For quesons concerning assembling and start-up, contact Powerex
at 1-888-769-7979 for technical assistance.
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. Conrm supply voltage and amps match the
system requirements.
4. Be sure all pressure connecons are ght.
5. Check to be certain all safety relief valves, etc. are unrestricted.
6. Check that all fuses, circuit breakers, etc. are the proper size.
7. Make sure the inlet lter assembly is properly installed and all
intake isolaon valves are open.
8. Conrm that the tank manual drain valve is closed.
9. Once power is connected to the unit, visually check the
rotaon of the compressor pump. If the rotaon is incorrect,
have a qualied electrician correct the motor wiring.
Safety Valves, Pressure Vessels, and Piping
1. Powerex systems are shipped with ASME safety valves sized so
that the maximum system ow is less than the capacity of the
valve or valves at the rated pressure. The rated pressure of the
valve is equal to or less than the maximum allowable working
pressure of the vessel or upstream pressure bearing parts. DO
NOT MODIFY or install any valves with dierent specicaons
unless appropriate evaluaons are completed. Do not modify
the structure of the pressure vessel or weld on the vessel.
2. Do not install any shut o valves between the safety valve
and the vessel or between the compressor pump and the
rst system safety valve. Doing so can result in a dangerous
condion and lead to death or injury.
3. Do not install shut o valves in the system that create trapped
compressed air.
4. Manually operate the safety valve every six months or 2,500
operang hours to provide assurance that the mechanism is
free to operate. Replace valve if it is leaking when it is closed
or if it fails to vent when actuated.
5. Any piping or pressure bearing connecon hose or tubing used
in the system must be rated equal to or higher than the safety
valve pressure rang. Inadequate pressure rang could result
in bursng.
Modular Placement
1. Unpack each frame module and discard or recycle all wood
shipping materials.
2. Systems consist of mulple frame modules. The steel base
plaorms are intended to be bolted to the oor as shown in
the design drawings and connecng hoses provided (found in
the parts pack box). Systems may be placed on isolaon pads
if desired. Modules may be spaced farther apart without any
structural problems, but electrical connecons may need to be
modied—addional isolaon pads and longer hoses may be
needed.
3. Place frame modules at locaon designated on build drawing.
Provide sucient clearance around system for servicing (see
minimum clearance secon).
4. Install frame assembly fasteners to each frame joining the
frames together.
5. Li corners of each frame assembly and install isolaon pads
provided.
Connecng Piping (if applicable)
1. Locate connecon for piping at rear of compressor module to
receiver tank module.
2. Remove plasc caps or adhesive covering on ports and
connectors.
3. Connect ex line to the ports making sure each ex line is not
pinched or kinked.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 7 of 40
Start Up and Operaon
1. Follow all procedures under “Before Start-Up” before
aempng operaon of the lab air system.
2. Make sure all selector switches are in the OFF posion.
3. Switch on electric source.
4. Open tank connecon valve or valves completely.
5. Using the selector switches on the control panel, turn on each
pump—motor in the “Auto” mode unl all are running.
6. Check for excessive vibraon, unusual noises or leaks during
operaon. If problems are detected, shut down the system
and make correcons or repair as needed before operang the
system.
7. Pumps may be operated in “hand” mode to override the
funcon of the automac controls. The pumps and the system
will not be damaged during “hand” mode operaon is used
for a short me. If hand mode if used for many hours, possible
overload and overheang may result along with more rapid
pump wear. The system safety valves may open if operated in
“hand” mode.
8. In normal operaon, leave all selector switches in the “Auto”
posion and allow the controls to cycle the pumps as needed
based on compressor demand.
Control Operaon
Systems are available with basic or premium controls. All controls
ulize a PLC to control the on o cycles of the pumps. The basic
controls have all the switches and indicator lights labeled. Operate
the system by turning the switches from OFF to AUTO unl all the
circuits are acve. Use the dryer selector to choose either dryer 1 or
dryer 2. During switchover temporarily use “BOTH”.
The system has a set of back-up pressure switches, if the pressure
gets low enough the backup low pressure switch will turn on all the
pumps. An alarm is triggered for “Reserve in Use” on medical systems
and “Low pressure” on lab systems. Similarly there is a high pressure
switch that will turn o the pumps even if the PLC fails to do so before
the system pressure rises beyond allowable levels. When the system
runs on the back up switches mulple motors may engage at the
same me generang high inrush amp draws.
A typical Medical system schemac with basic controls is shown on
page 8.
NOTE: In Medical and lab systems the Motor Protector Circuit
Breakers can be used to isolate a motor branch circuit to prevent the
motor from running. The fan motors and temperature switches are
not controlled by the MPCB (nor is the control signal to the motor
contactor) and must be depowered separately if needed.
If all pumps are running in the wrong direcon,
change the incoming power leads to correct
rotaon.
Premium Controls ulize a touch screen display to give and receive
informaon. This is oen referred to as a Human – Machine Interface
or HMI. The HMI screens and their funcons and capabilies are
discussed on page 14.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 8 of 40
Medical System Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 9 of 40
Medical Compressor Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 10 of 40
Medical Dryer Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 11 of 40
Laboratory System Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 12 of 40
Laboratory Compressor Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 13 of 40
Laboratory Dryer Flow Schemac
This is only a representave schemac diagram.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 14 of 40
HMI Controls
The Powerex system can have basic electromechanical controls
with switches and indicator lights or it can be constructed with our
touch screen interface. The basic control system will operate the unit
and provide indicaon of the status. The individual switches, indicator
lights and reset buons are labeled on the panel door.
If the system has the touch screen controls, the following secon
will explain how the screen can be used to control and monitor the
unit operaon.
• Displays Pressure level and Dew Point level.
• Pressure level will change from green to orange when high.
• Dew Point level will change from green to orange when
approaching alarm level; will change from orange to red when
in alarm.
• System Status, Alarm Status, Service Info and Trends buons
will redirect to those specic pages.
• Displays operang status, run hours, NFPA alarms, and Service
alert of each pump on the system.
• Displays Pressure level, and Dew Point level and status like on
MAIN page.
Main
System Status
• Acknowledge and reset alarms.
• Displays Pressure level and Dew Point level.
Alarm Status

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
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IN907800AV •08/2018
Page 15 of 40
• Record of all alarms, warnings and service alerts with date and
me.
• Displays model number, serial number, service phone number
• If system is expandable, use Plex Mode Input to adjust PLC
Program to addional pumps.
Alarm Log
Service
To Set Time & Date
This Screen Will Appear
• Press Set Time, Date buon
• Press Oine

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
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Page 16 of 40
• Press Clock Seng and enter me and date
This Screen Will Appear
To Return to Run Mode
This Screen Will Appear
Sequence of Operaon
• Press Main Menu tab
• Press Run and HMI will return to normal operaon and Service
screen.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 17 of 40
Daily Load Factor
Pump Maintenance
• At specic preset intervals, service alerts for the Dew Point
Monitor and Dryer system will nofy that maintenance is
required.
Service Alert

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 18 of 40
Gateway Start Up
NOTE: PAGES 18-25 ARE INSTRUCTIONS FOR OPTIONAL PBMI WEBSERVER/BACNET® GATEWAY CARD. THESE INSTRUCTIONS ARE NOT
APPLICABLE FOR SYSTEMS WITH HMI ONLY.
Required Tools & Data
You will need the following tools:
• The 260MX-S027 Gateway
• The provided CD-ROM
• A Working PC (Windows based)
• An Ethernet Crossover Cable
• A 12-24 VDC power source (T-strip)
Overview
The 260MX-S027 Gateway device seamlessly connects Modbus RTU Slave devices to a BACnet/IP client. By following this guide, you will
be able to congure the 260MX-S027 Gateway for basic operaon. You will set the device’s network sengs and parameters to the proper
conguraon for inial operaon and physically place the device in the network.
Network Connecons
The Gateway is shipped out with a Default IP Address of 172.16.3.159 and a Subnet of 255.255.248.0. In order to browse for the gateway’s
main page and begin conguring the gateway, you must change your PC to be on the same network as the gateway.
1. Change the IP Address of your PC to be 172.16.3.158
2. Change the Subnet of your PC to be 255.255.248.0
3. Open IPSetup.exe and browse for the gateway under select a unit.
4. Change the IP Address and Subnet to be on your network.
5. Click Set.
6. Change the PC’s IP Address and Subnet back to its original sengs.
7. Browse for the Unit using IPSetup.exe and launch the webpage.

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 19 of 40
Accessing the Main Page
Before you can congure the gateway itself, you must congure the network sengs to connect the gateway. The following steps will connect
the gateway properly.
1. Connect the 12-24 VDC power source to the device.
2. Using the crossover cable, connect the device to the PC.
3. Insert the provided CD-ROM.
4. Run the IPSetup program from the CD-ROM.
5. Congure the IP Sengs based on your subnet.
6. Click Set.
7. Click Launch Webpage. The Main page should appear.
8. To sign in as a Guest User for the rst me, use the informaon below:
Username: Guest
Password: (Password eld is blank)
9. Once logged in as Guest, access the security screen using the pull down menu on the le side of the screen. In the security screen create a
new Customer User and password. Aer creang a new Customer User log out of the Guest User and log back in as your Customer User.
From this login you can change your BACnet conguraon sengs.
10.Aer the inial creaon of a Customer User, the user dened user name and password should be used to log in to the system and may be
updated from the Security Conguraon Page.
NOTE: Browser conguraon is compable with Chrome, Internet Explorer, and Firefox. Default IP address is 172.16.3.159

Scroll Medical & Laboratory Compressed Air Systems
Powerex • 150 Producon Drive • Harrison, OH 45030 •USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN907800AV •08/2018
Page 20 of 40
Error: Main Pain Does Not Launch
If the Main Page does not launch the IP Address is most likely incorrect. Correct the IP Address and try again. If you do not know the IP Address
use the following procedure:
1. Open an MS-DOS Command Prompt.
2. Type ipcong and press enter.
3. Note the IP address. (The previous example was 172.16.3.158)
4. To test the communicaon between the PC and the unit type ping (###.###.###.###) in the prompt and press Enter. The (###.###.###.###)
is the IP address of the unit you used in step 5 of network conguraon, which is 172.16.3.159 by default. If the device is connected to the
network the ping will show a response. If you get no response check the crossover cable.