Thermo Scientific Mercury Freedom 80i, Руководство пользователя

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Preventive Maintenance
System Preventive Maintenance
5-2 Mercury System Manual Thermo Fisher Scientific
Table 5–1
provides a list of components and supplies that require periodic
maintenance.
Table 5–1. Preventive Maintenance Schedule
Task Time
Required Monthly Quarterly Semi
Annually
Cleaning Sample Lines (Total /
Elemental) 6 Hours
Check Indicating Silica Gel on Dryer 30 Minutes X
Replace Dryrite 30 Minutes X
Replace Carbon 30 Minutes X
Replace Purafil 30 Minutes X
Replace Air Clean-up Filters 15 Minutes X
Hydrator 15 Minutes X
Heated umbilical - Cleaning the
Total and Elemental lines 4 Hours X
Replace Transport Pump 15 Minutes As required
The heated umbilical keeps mercury from adhering to the PFA tubing. The
umbilical connects the microprocessor-driven probe control unit to the
stack probe and mercury converter.
The umbilical contains heated PFA transport tubing, signal and power
cables. The heated umbilical contains eight lines, three heated PFA lines
and five unheated lines.
The three heated PFA lines consist of:
●
Two lines for the total and elemental mercury, ¼-inch diameter, 0.040-
inch wall thickness
●
One line for the 81 i , 3/8-inch diameter, 0.062-inch wall thickness
The remaining five unheated lines are for the dilution air, vacuum,
blowback, eductor air, and one is a spare.
Four to five electrical connectors plug into the 82 i . An umbilical more than
200 feet long requires five connectors.
The 82 i controls the temperatures of the heated umbilical line. The 82 i is
capable of controlling two zones (in parallel). The connector labels are A1
and A2. A1 is the primary and A2 is for the +200 foot-long power. Each
one of these connectors also has two, type K thermocouples. Use the A2
System Preventive
Maintenance
Heated Umbilical