2101510MNA H | NGC82 00 AN D P GC 1000 US ER MA NUA L |
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Figure 9-21: Login prompt when RBAC is enabled
10 Maintenance
NOTICE – Equipment damage or loss of data.
As with all electronic components, use
caution when handling boards. Static electricity can potentially damage board components,
voiding any warranty.
This chapter provides maintenance information and instructions on how to remove and install analyzer
components. Develop regularly scheduled daily, weekly or monthly maintenance programs. By
establishing such programs, analyzer downtime will be reduced, and the system will operate at
optimum analytical efficiency.
WARNING – Bodily injury
. Do not open or remove covers, including the PCCU local
communications cover, unless the area, including the internal volume of the enclosure, is
known to be non-hazardous.
10.1 Maintaining cleanliness
It is important that an inspection schedule be established to examine the device for internal and
external cleanliness and damage.
Because an analyzer installation is exposed to external environmental conditions, it is important that it
be regularly inspected for cleanliness, both externally and internally. Even though the analyzer is
tightly sealed against moisture and foreign contamination, it is recommended that the internal
components be examined for moisture and/or contamination. If contamination is found, the system
should be shut down and cleaned. If such contamination is not removed, it could render the analyzer
inoperable.
10.2 Visual inspection
The analyzer should be visually examined on an established schedule to maintain optimum system
operation.
During the visual inspection, examine components for the following conditions:
Pipe or wall mounting: The device must be in a vertical position and the mounting brackets
tightened on the pipe. The wall mounting bracket must be securely affixed to the mounting
wall.
Carrier gas cylinder mounting rack: The mounting rack should be tilted backward slightly to
keep the cylinders from falling forward.
Cylinders within mounting rack: The cylinders must be securely strapped in the mounting
rack.
Cylinder regulators: These must be tightened securely and checked for leaks.
Pipe-mounted sample probe: These must be securely mounted in the pipe meter run using an
approved probe adapter.
Stainless steel tubing connected between sample probe and analyzer: These must not be bent
or closed off. The connections must be tight.
Tightness of front and rear end caps: Hand-tightening gently is adequate.
Input/output terminations, external power or signal cable runs: All input/output cable, power
and signal connections to the NGC or PGC must be installed in accordance with the applicable
national and local electrical codes for the intended use. Classified Hazardous Locations will
require a suitable enclosure seal to ensure the explosion proof protection.
