F:\MARKETING\TECHNICAL MANUALS\Air Samplers\DF Battery TECH MANUALS\DF-75 LPM SERIES.doc
Tel: (352) 680-1177 / Fax: (352) 680-1454 / Email: [email protected]
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MAINTENANCE INSTRUCTIONS
PRIOR TO PERFORMING ANY MAINTENANCE, DISCONNECT THE
AIR SAMPLER CORD FROM THE POWER SOURCE.
DISASSEMBLY or ATTEMPTED REPAIRS:
If accomplished incorrectly, repairs can create an electrical shock hazard. It is
recommended that repairs be made by a qualified electrician or technician or be returned
to F&J SPECIALTY PRODUCTS, INC.
REMOVE THE FRONT PLATE
1.
Unplug the air sampler from the power source.
2.
Remove the filter holder and quick disconnect from the air sampler.
3.
Remove the (4) four sheet metal screws from the front plate of the air sampler.
4.
Carefully, move the front plate (with DFM and Battery Gauge Indicator) away from the front of the
instrument.
5.
Disconnect all the electric and sensor connections to the DFM and Battery Gauge Indicator. Refer
to the spare parts list and electrical diagram on the following pages. These connections are for the
following:
•
Pump/Motor
•
12VDC
•
RS232 to optional Datalogger
•
Temperature Sensor
•
Differential Pressure Sensors
•
Battery Gauge Indicator
6.
Set the front plate with DFM aside.
7.
Remove the (2) two screws from the left side of the instrument. These screws hold the orifice tube
in place. Pull the orifice tube straight out through the front of the air sampler.
8.
If you are sending the DFM back to F&J, you must send the orifice tube with temperature sensor
and the DFM. These items are serviced and calibrated as a complete set.
9.
With the front plate out of the way, you can now get to the following parts:motor, battery, and
power supply.
•
Pump
•
Battery Charger Circuit
•
Power supply
•
Battery
10.
After you make necessary repairs, replace the orifice and front plate by performing the above steps
in reverse order.
WARNING
CAUTION
