TSI Instruments Aerotrak 9303 Service Manual

Troubleshooting 6-3
Symptom
Possible Cause
Corrective Action
Counts are too low
Internal optics have become dirty
See Optics Block Cleaning for cleaning
details
Instrument has contamination on the optics
due to condensation or excessive loading
Clean instrument. See Optics Block
Cleaning.
Incorrect flow rate
Tubing from the pump inlet is not
connected to the outlet nozzle or tubing is
leaking (Model 9303).
Remove obstruction from inlet and/or re-
calibrate flow. If there is no flow or the
flow rate is too low, replace pump
assembly.
Reset laser power.
Check laser cable to detector board.
Replace laser assembly.
See Laser Replacement.
Laser is set at incorrect laser power or the
laser is damaged
Restart measurement.
Laser has become misaligned due to
excessive bumps or jolts
See Laser Replacement.
Detector board malfunction
Replace detector board. See Detector
Board Replacement.
Counts are too high or
cannot zero unit
Leaky optics chamber.
Contamination in the optics chamber,
clean optics.
Deposits in the inlet—clean inlet and
check for dents on the inlet. If inlet is
dented, replace the inlet.

TSI Instruments Aerotrak 9303 Specifications

General

Size Range .	0.3 to 25 µm
Channel Sizes .	0.3 µm and 5.0 µm fixed; 0.5, 1.0, 2.0, or 2.5 µm selectable middle channel.
Counting Efficiency .	50% at 0.3 µm; 100% for particles > 0.45 µm (per ISO 21501-4 and JIS)
Concentration Limits .	2, 000, 000 particles/ft3 at 5% coincidence loss
Zero Count Level .	<1 count / 5 minutes (per ISO 21501-4 and JIS B9921)
Flow Rate .	0.1 CFM (2.83 L/min)
Calibration .	NIST traceable with TSI® calibration system
Sampling Modes .	Manual and automatic
Sampling Time .	1 second to 99 minutes 59 seconds
Sampling Frequency .	1 to 999 cycles or continuous
Light Source .	Long life laser diode
Sample Probe/Tubing .	Isokinetic sampling probe
Exhaust .	Internal HEPA filter
Vacuum Source .	Internal pump
External Surface .	High impact injection molded plastic
Communication Mode .	USB serial output
Data Storage .	1, 500 sample records
Status Indicators .	Low battery and service
Display .	3.2-in. (8.1 cm) 160 x 160 monochrome LCD
AC Power . (power to AC adapter)	110 to 240 VAC 50-60 Hz Universal in-line power supply with country specific plugs
DC Power . (power to instrument)	9 VDC @ 1.5 A
Battery .	Rechargeable Li-Ion
Battery Life .	Up to 4.5 hours of continuous use
Recharge Time .	< 3 hours

Weight and Dimensions

Dimensions (L x W x H)	9.1 x 6.3 x 2.4 in. (23 x 11 x 6.2 cm) (without isokinetic inlet)
Weight .	1.3 lbs (0.58 kg) with battery