Gemini 501-B, Руководство пользователя

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9
4.0 Operating Instructions
4.1 Initial Operation
Working Standard. Establish a working standard for your analyzer when you receive the instrument for the
first time and every time it is recalibrated. (Pg. 15 – 6.2)
Location of Instrument
. The tester should be used in a ventilated or large room to avoid exposing operator to
aerosol concentration greater than the OSHA limit of 5 mg/m3 .
Level position. The tester should be kept at a level position.
Nebulizer and Oil Filling
. Fill the nebulizer reservoir from the housing opening with Rudol
TM
liquid (See
Appendix F, Figure A, p23). The top level of the liquid should be about 1/4 inch below the joint line
between the housing and the reservoir. Refill when the level drops to about 1/4 inch from the bottom
of the dip tube.
Note : Remove nebulizer from the tester and empty all the oil before storage.
Wet the manifold O-ring with a little oil before using a twist and push motion to fully insert the
nebulizer into the manifold. When you need to remove the nebulizer, tilt the instrument forward
slightly for a few seconds to allow the oil at the tip to drain back into the nebulizer housing. This
action will minimize any spillage when the nebulizer is pulled out. To avoid contamination, use a lint-
free towel to wipe off residual oil in the manifold. After removing the nebulizer from the manifold, be
sure to cover the opening of the nebulizer with the orange-colored cap provided to avoid
contamination from room dust. Dust or lint from the inlet can easily get into the opening and
contaminate the oil in subsequent use. The contaminant would cause blockage of the small hole
inside the nebulizer and may cause unnecessary repair. The appearance of large bubbles coming
out from the bottom of the dip tube is a symptom of clotting. See Appendix F, Figure B p23 and
Appendix B for repair and cleaning instructions.
Drain Reservoir. The drain reservoir should be attached to the outlet tube tightly behind the nebulizer
before any operation. Empty the reservoir before it becomes 3/4 full or before storage .
Dilution Air Adjustment. Connect one end of the hose to the Tester and the other end to the wands. Then
connect the wand (with end fitting) to the shroud. Turn on the blower and use the dilution adjust
knob to adjust the LED to green. Slight adjustment may be necessary to keep the dilution LED at
green during the test.
Pressure Adjust.
Connect the pressure line with the Luer fitting (Pg. 4 – figure 1 (8)) on the nebulizer (or
inlet See page 18) to the nebulizer. Do not rotate the fitting after insertion.
Turn on the Compressor switch and adjust the pressure indicator to “green” using the pressure
adjust knob. If necessary, re-adjust pressure during testing to keep the pressure LED at green.
The oil in the reservoir will become cloudy due to emulsification after the pressure is applied. Testing
is ready only after all the liquid above the suction tube in the reservoir is emulsified, in about 45
seconds.
Concentration Adjust. Use the concentration adjust valve to select the initial test value.
Reading. The LCD on top of the panel displays the readings for photoelectric (Photo) and ionization (Ion) for
smoke detectors. The current temperature of the oil is also displayed at the lower left corner. The
elapsed time is shown at the lower right corner.