SVC 4- 46
CONNECTING THE HYDROGEN INLET TUBE AT THE WRONG LOCATION ON THE
FLOW MANIFOLD BLOCK WILL RESULT IN LEAKAGE, CREATING A FIRE AND
EXPLOSION HAZARD.
`
The following steps require protection against ESD (Electro- Static Discharge).
Use a grounded wrist strap (part no. 9300- 0969 - large, or 9300- 0970 - small)
connected to a suitable ground. Failure to heed this caution may result in
damage to the instrument.
`
When storing or in between handling of PCBs (Printed Circuit Boards), always
place them in static control envelopes or enclosures.
NOTE
In the next step, avoid touching the lower end
of the collector (end nearest the jet).
Fingerprints and/or other contamination may
cause baseline drift and noise.
45. Install the base spanner nut on the detector
weldment and tighten using a spanner wrench
(part no.19301- 00150).
46. Remove the cap from the detector weldment
top opening.
47. Use an inert gas to blow out the detector weld-
ment, cleansing it of any debris.
48. Ensure that there is no debris in the detector
weldment.
49. Install a new jet in the detector weldment. (Al-
though installation of a new jet is highly recom-
mended, the old jet may be cleaned and in-
stalled at the operator’s discretion. Use an
approved solvent and a cleaning wire to clean
jets.)
Do not over- tighten the jet! Over- tightening may permanently deform and damage
the jet, the detector base, or both.
50. Install the replacement jet finger- tight. (Use two fingers on the 1/4- inch nut driver to obtain
this tightness).
51. Tighten the jet 1/8- turn past finger- tight using the nut driver.
SENSOR
HEATER
HEATED
BLOCK
BASE SPANNER NUT
JET
INSULATION
PLATE
THERMAL STRAP
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