Environmental Express SPE-Express with Cover User Manual
Page 11
Environmental Express, Inc.
800.343.5319/843.881.6560
10
2.2.4
Filter O-Ring
Place a filter O-Ring (15 are supplied with the unit) into the groove in the filter adapter of each station.
This O-Ring ensures the disposable filters seal to the unit during a test.
The o-ring is not a disposable item and can be reused in multiple tests.
2.2.5
Exhaust Duct
A hose adapter with a diameter of approximately 4
"
should be placed around the SPE-Express exhaust
duct and connected to a fume hood or other available exhaust ducting.
The exhaust duct with fan may be interchanged between the two sides of the unit depending on your
venting preference. To switch the exhaust fan and ducting to the alternate side of the unit:
•
Use a 5/64
"
Allen wrench to remove the 4 screws on each of the two side panels.
•
The exhaust fan will be plugged to a cable within the internal channel of the unit. Remove the
exhaust fan plug from the cable receptacle.
•
Plug exhaust fan plug into the cable receptacle on the alternate side of the unit.
•
Replace 4 screws into each of the two side panels. Care should be taken to fully insert the cable
and wiring into the internal channel in order to prevent tangling the wiring into the fan.
Tangling the wires in the blades will cause a fan fault in the software and prevent the Operator
Test Screen from running.
2.2.6
Flow Control Valve
A flow control valve is located within the SPE-Express unit which can be adjusted to supply a portion of the
Nitrogen source into the electronics chamber. The flow control valve is shipped set in the OFF position.