Ametek ASR900, Installation And Maintenance Manual

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4-2 | Heated Acid Gas Sample Probe (Large Diameter)
Preventive Maintenance Schedule
To reduce the occurrence of problems with the HAG Probe follow this
schedule. Since most analyzer problems originate within the sample
system, the primary objective of this schedule is proper care of the sample
system.
Preventing leaks in the HAG Probe and the rest of the sample system
is critical to proper analyzer operation. Leak check the HAG Probe
and the rest of the sample system whenever it has been dismantled for
maintenance.
Maintenance details and assembly drawings are included in this chapter.
Refer to the analyzer manual for additional information while performing
maintenance.
!
CAUTION
Frequency Task
Every 6 Months Insulating Jacket on Sample Probe
Inspect the Insulating Jacket on the HAG Probe. If there is any
exposed metal, take appropriate safety precautions and re-insulate it
properly.
Every 6 Months*
HAG Probe
(*Depending on process stream conditions, the suggested Preventive
Maintenance frequency may be shortened or extended.)
Replace the o-rings, Hi-Flow Membrane, Fiber Filter Element, and
Sintered Disk in the HAG Probe.
For more information, refer to “Replacing Parts in the Sample Probe,”
later in this chapter.
Every Year Probe Heater
Replace the o-rings in the Probe Heater.
See “Replacing Parts in the Probe Heater Assembly” in this chapter.
Other Extended Maintenance:
HAG Probe Main Sample/Vent Isolation Ball Valves or Optional
Double Block Valves
The Sample/Vent Isolation (or optional Double Block) valves typically
do not require regular maintenance. However, if it appears that leaks
are originating from any of these valves, replace or rebuild the valves
immediately.
IMPORTANT
To avoid further delays during maintenance, be sure to have
on-site all required parts that are being replaced prior to
disassembling the Sample Probe valve assembly. Twenty-four
hours of curing time is required for the liquid sealant.

See Chapter 5
(Extended Maintenance Spare
Parts) for Isolation valve
ordering numbers for your
application.