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page 19
4.4 End Cap Removal
The end cap on the inlet side must be removed to gain access to the filter and shunt assembly.
First remove power and shut off the supply of gas to the instrument. Disconnect the Swagelok
fittings on the inlet and outlet sides of the transducer and remove it from the system plumbing.
Remove the two Allen head screws holding the end cap to the instrument (see figure 4.2). Care-
fully remove the end cap, retaining ring, filter, spacer, filter washer and ball bearing (if present) and
shunt, noting their order and proper orientation. The shunt can be severely damaged if dropped.
Examine the filter and shunt. If either is damaged, dirty or blocked, clean and replace as applicable.
Reassemble in the reverse order of disassembly. Secure the endcap with 4 in lb of torque on each
18-8 stainless steel socket head cap screw. Use of a fastener other than the one mentioned here
may result in leakage at the seal.
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figure 4.2
10 sccm to 200 sccm
40 slm
60 slm