GLOBAL PLASMA SOLUTIONS GPS-DM48-AC Instruction manual

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Installation, Operation & Maintenance Manual
GPS-DM48-AC

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Thank you for purchasing a GPS-DM48-AC™ from Global Plasma Solutions. The GPS-DM48-AC is the
first auto-cleaning duct mount air purifier with a weatherproof housing that can be mounted indoors
or out. The GPS-DM48-AC requires no maintenance or periodic replacement of parts.
HARDWARE PROVIDED BY GPS
Before you start, confirm the contents of your shipment. Each GPS-DM48-AC will consist of the fol-
lowing:
1.GPS-DM48-AC with weather tight clear cover and black mounting flange (preinstalled).
2.Weathertight conduit (preinstalled on unit).
3.Self-tapping sheet screws (4).
4.Expanding anchors with screws (4).
HARDWARE REQUIRED BY OTHERS
1.Electrical wiring, junction box, or receptacle to provide power to the GPS-DM48-AC.
2.Sealant to make duct watertight after installation, if required.
3.4-inch hole saw or snips.
INSTALLATION LOCATION
GPS recommends mounting the GPS-DM48-AC after a prefilter and before the cooling coil. Alternate
mounting locations are on the supply air duct or the return air duct after the filter. The duct must
have a depth greater than 8 inches for the unit to operate properly. The weatherproof housing will
allow mounting indoors or out.
CAUTION:
• This unit should not be installed behind a suspended floor, ceiling or in a structural wall,
ceiling, or floor.
• This unit is designed for mounting to duct of metallic construction only. Installation must be
such that the structural integrity of the ducting is not compromised.
MECHANICAL INSTALLATION
1.Ensure power to the HVAC equipment and the GPS-DM48-AC has been disconnected.
2.Find an appropriate location. Verify the 8-inch depth clearance for the GPS-DM48-AC.
3.Cut a 4-inch round hole in the duct.
4.Install the GPS-DM48-AC so that airflow is passing by both emitters at the same time (like a
football through goalposts). The conduit and connection grommet should be pointed down
or to the side. Secure to the duct with provided screws.
WIRING
1.Confirm the power is off prior to wiring. Follow all local and national electrical and building
codes.
2.The GPS-DM48-AC will self-adjust to voltages from 24VAC to 240VAC. Connect the power
wires as follows:
Black 24 - 240VAC
White Neutral or L2
Green Ground
Brown Dry Contacts/BAS terminals
3.Wire in BAS terminals (optional). The GPS-DM48-AC is equipped with dry contacts that are
normally open and close when the GPS-DM48-AC is on and has no faults. The contacts are
rated up to 250VAC and 1A.
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OPERATION
CAUTION! NEVER TOUCH BRUSHES WHILE OPERATING - SHOCK MAY OCCUR
Once powered, the unit initiates an internal check of all systems. After initializing the display
will blink between “ON”, “GPS”, and the number of days the unit has been powered. If there
is a fault, “FALT” will be displayed.
CLEANING CYCLE
The GPS-DM48-AC comes with a factory preset cleaning cycle
designed to clean the emitters every 5 days. The cleaning process
can be activated by pressing the test button labeled “Cleaning
Cycle Test” below the display. See FIGURE 1. During the cleaning
process “CLEA” will be displayed. To access the test button,
remove the clear faceplate by using a Phillips head screwdriver
to remove the mounting screws. Take care with the screws and
gasket.
CHANGE CLEANING CYCLE FREQUENCY
Press the test button so the display reads “CLEA.” Hold the test
button down for 5 seconds until the current cleaning frequency
is shown on the display. Repeatedly press the test button until
the desired cleaning frequency is shown. The choices are 1, 3,
5, 10, 15 or 20 days. The factory present is sufficient for most
applications.
TROUBLESHOOTING
1.Unit will not power up, no display
a.Confirm proper voltage is applied to the correct terminal(s).
2.Display shows “FALT”
a.Remove power, wait 1 minute, and reapply power.
b.If “FALT” is still displayed, try an alternate power source. If using 24v try using 120v or vice
versa.
3.Wiper sticks or stops on emitters
a.Adjust height of emitters: loosen screw at base of emitter and gently push or pull emitter
brush to a height where the wiper just contacts emitter brush. Hold the emitter in place
and tighten screw. Verify correct height after tightening screw.
2.Wiper does not clean/ contact emitters
a.Adjust height of emitters: loosen screw at base of emitter and gently push or pull emitter
brush to a height where the wiper just contacts emitter brush. Hold the emitter in place
and tighten screw. Verify correct height after tightening screw.
b.If the emitter is worn to the point where there is no adjustment, order replacement
emitters from GPS. Remove the screw and the emitter base, unplug the emitter from the
connector. Plug the new emitter in, reinstall base, adjust emitter height and tighten screw.
3.If unit does not operate properly after verifying the above instructions
a.Contact GPS for additional assistance.
Figure 1

3101 Yorkmont Road • Suite 400
Charlotte, NC 28208
980-279-5622
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©2020 Global Plasma Solutions, Inc.
020120-GPSDM48-IOM REV B