LumaSense Technologies M8100SM-EXP - Manual (Page 51)

E 2 T QUASAR Flare Monitors Operation Manual Maintenance 51
9 Maintenance
9.1 General Maintenance
Refer to Chapter 10, Safety Assurances and Precautions, when performing the following
procedures.
Warning: At no time should the cover be removed unless the power is switch-off first.
When it is necessary to service the instrument with the power applied, ensure that
proper safe environmental conditions exist and that such maintenance is authorized
and pursuant to safe conditions.
Some internal electronic repairs may be performed on the LumaSense E 2 T QUASAR M8100-EXP
without requiring re-calibration to the factory standards, but many components are matched
and temperature compensated and cannot be replaced in the field without factory re-
calibration.
Repairs that can be performed without affecting instrument performance are:
Replacement of MOV components on the power supply and Terminal Output
boards.
Repairs to the Output terminal board, heater assemblies, interconnecting cables,
connectors, eyepiece and lens.
9.1.1 Chopper Motor Repair
The primary failure mode of the chopper motor is bearing failure. It can be identified by
listening for an excessive whining noise as it runs. Replacement is recommended and must be
performed at the factory.
Troubleshooting guides are included and our staff will provide assistance via FAX, phone or
e-mail.
Any damage to the instrument affecting the optical alignment or critical electronic components
usually requires the instrument to be returned to the factory for repair.
It is recommended that a spare or back up unit be procured with the acquisition of your original
equipment if the QUASAR M8100-EXP is to be used in a critical control installation.
Only the Optical Electronics Package is required as a spare unit.
9.2 Cleaning the Optics
The front window in the explosion-proof housing should be cleaned monthly. After removing
the air purge tube, use facial tissue dipped in rubbing alcohol (isopropyl 70%) to clean the
window.
The optical system of the QUASAR M8100-EXP consists of a lens, an eyepiece and a specially
coated front surface mirror mounted on a special insert. The optics of the
QUASAR M8100-EXP are located within the electro-optical package and will remain clean under
normal conditions, provided the enclosure remains sealed at all times with o-rings in place.
LumaSense does not recommend cleaning optics other than the objective lens. A complete
cleaning requires disassembly of the optical train.