6-18 | Model 933S UV Analyzer
Column Block Maintenance
The joining surface of the Column Block and Column Block Flange is
a flamepath.
Take care to avoid damaging this flamepath when disassembling and
reassembling the Column Block.
Do not apply AC power to the analyzer if any of its flamepaths appear
to be scratched, dented, or worn. Applying power to an analyzer with
a damaged flamepath is dangerous and could result in serious injury
or death to personnel and/or serious damage to equipment. See “Ex-
amining and Caring for the Flamepaths” in this chapter.
Replace/clean parts in the Column Block:
• Every 2 years.
• If, during Measuring Cell maintenance, white particulate (or other
contaminants) was removed from it, replace the Filter Elements/
o-rings.
• If the system flow rates have decreased to unacceptable levels, replace
the Flow Restrictors. Typical flow on the rotameter should be ap-
proximately 2 litres/min with 550 kPag (80 psig) supply pressure. The
pressure must be less than the 1380 kPag (200 psig) maximum Cell
Pressure.
• If performing unscheduled maintenance on one section of the Col-
umn Block, replace the required parts and o-rings in all other sections.
Replacing any of the electrical components (Heater Cartridge, Over-
Temp Switch, and RTD) requires disconnecting wiring and removing
the entire Column Block Assembly from the analyzer backpan.
Instructions to remove the Column Block and replace these parts are
not included in this manual. Contact AMETEK for assistance.
NOTE
!
CAUTION
!
WARNING
See Chapter 7 for
spare part ordering numbers.
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