Operation; Pre-Operational Check; Operating; Maintenance - Emerson Penberthy Installation, Operation And Maintenance Manual

Penberthy FlaT glass gagE scalEs
InstallatIon, operatIon and maIntenance InstructIons

5 OPeratIOn

5.1 Pre-operational check

1. Ensure that all installation procedures have
been completed.
2. Ensure that the gage scale is secure and
well supported.
3. Ensure that the gage scale is located
correctly.

5.2 Operating

Flat glass gages should be brought into service
slowly. The glass used in Penberthy flat glass
gages is tempered and can withstand minimal
thermal shock and mechanical stress.
WarnIng
Gage and gagecock installations should be
brought into service slowly. The glass used in
flat glass gages is tempered and can withstand
minimal thermal shock and mechanical stress.
Gagecocks should be opened slightly, and the
gage and gagecock assembly temperature
and pressure allowed to equalize slowly. If the
gagecocks are equipped with ball checks, the
gagecocks must be opened all the way after
the pressure and temperature have equalized
to permit operation of the automatic ball check
in the event of gage glass failure. Failure to
follow the recommended operating procedures
can result in severe personal injury or property
damage.

6 MaIntenanCe

Maintenance should only be undertaken by
qualified, experienced personnel who are
familiar with this equipment and have read and
understood all the instructions in this manual.
WarnIng
DO NOT proceed with any maintenance unless the
gage and gagecock assembly has been relieved
of all pressure or vacuum, has been allowed to
reach ambient temperature and has been drained
or purged of all fluids. Failure to do so can cause
serious personal injury and property damage.

6.1 Preventative maintenance

On all installations the following items should
be evaluated regularly by the user for purposes
of maintenance:
1. gage scales for cleanliness.
2. gage scales to insure that scales are
secure and well supported.
3. gage scales for corrosion.
The user must determine an appropriate
maintenance schedule necessary for his or
her own specific application, upon evaluation
of their own operating experience. Realistic
maintenance schedules can only be determined
with full knowledge of the services and
application situation involved.

6.2 Maintenance procedures

clean gage scales with a non-abrasive soap or
detergent and a soft grit-free cloth or sponge.
after the surface has been cleaned and rinsed
of all foreign particles, it may be dried using a
clean, soft, grit-free cloth.

7 reMOVal - dIsasseMbly - reasseMbly

WarnIng
DO NOT proceed with the removal of the gage
scale unless the gage and gagecock assembly has
been relieved of all pressure or vacuum, has been
allowed to reach ambient temperature and has
been drained or purged of all fluids. Failure to do
so can cause serious personal injury and property
damage.

7.1 disassembly

Refer to the exploded parts drawing in
section 10 for additional reference during
disassembly and reassembly of the gage scale.
1. While holding the gage scale firmly,
loosen the set screw (100) in the mounting
brackets (73) with a hex wrench.
2. Remove the gage scale from the brackets
(73) insets and place on work bench.
4