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PRELIMINARY
CYCLONE & CASSETTE HOLDER ASSEMBLY KIT
Sensidyne Document No. F-PRO-1247 (Rev C)
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Maintenance
Cleaning and leak testing of the Cyclone sampler
should be done on a regular basis to maintain perfor-
mance. The cyclone should be cleaned and checked
for cracked or worn parts on a daily basis, and leak
tested on a monthly basis.
Cleaning
Unscrew the grit pot from the cyclone (see Figure 1).
Empty the grit pot by turning it upside down and tap-
ping it gently on a solid surface.
The cyclone parts should be cleaned in warm soapy
water.
All parts should be left to dry before
re-assembly.
CAUTION
NEVER insert anything into the cyclone that could scratch the
inside surfaces.
Inspection
The vortex finder, cyclone body, grit pot and grit pot
O-ring (see Figure 1) should be inspected for wear,
cracks or damage. Replace any worn or damaged
parts, as they can impair the performance of the
cyclone.
Leak Testing
Leak testing can be performed in two different ways.
The first test is a simple field test that checks for major
leaks in the entire assembly.
Field Test
Attach the Cyclone sampler with filter installed to a
charged GilAir-3, GilAir-5, HFS-513 or Gilian 3500
pump (or other constant flow pump). Run the pump
at 1.7 LPM (
±
5%). Block the cyclone inlet with your
finger or thumb. The pump should speed up and go
into its fault mode, causing the fault indicator to light
up.
NOTE
This test can also be run using a non constant flow
pump (e.g. BDX II). This can be done by observing the
pump stall and watching the rotameter ball drop to
the bottom of the shaft. However, due to the tight flow
control required for cyclone sampling, it is recom-
mended that samples be collected using a constant
flow control pump.
Bench Test
A more thorough Bench Test checks the individual
parts of the system and can be performed using a
manometer, an aspirator bulb, and tubing.
Refer to the Occupational Safety and Health
Administration’s (OSHA) Cyclone Leak Test Procedure
for complete instructions. The procedure is also acces-
sible through OSHA’s web site at www.osha.gov.