Spectrex 20/20L (LB) - UV/IR Flame Detector - Manual (Page 44)

Spectrex Inc. - SharpEye TM UV/IR Flame Detector Manual – TM20/20LB Rev E, August 2004
36
8. Maintenance Instructions
8.1 Scope
This chapter deals with preventive maintenance, describes possible faults in
detector operation and indicates corrective measures. Ignoring these instructions
may cause problems with the detector and any invalidate the warranty.
Whenever a unit requires service, please contact the manufacturer or its
authorized distributor for assistance.
8.2 Maintenance Instrumentation And Personnel
The detector’s maintenance requires ordinary tools and qualified personnel,
which should be familiar with local codes and practices
8.3 Preventive Maintenance Procedures
The detector must be kept as clean as possible. The viewing window and the
reflector of the model 20/20L, 20/2LB Flame Detector must be cleaned on a
periodic basis. The frequency of cleaning operations depends upon the
environmental conditions and specific applications. The fire detection system
designer will give his recommendations. Use of the optional AIR SHIELD Model
20/20-930 is highly recommended and will help to keep the window clean and
prevent dirt from accumulating on the window.
1 Disconnect power to the detector before proceeding with any maintenance.
2 To clean the detector-viewing window and reflector use water and detergent
then rinse with clean water.
3 Where dust, dirt or moisture accumulates on the window, first clean with a
small soft brush under the window guard, then clean with a soft optical cloth
and detergent and finally rinse with clean water. Do not attempt to open the
window guard since it should not be removed.
8.4 Periodic Maintenance Procedures
In addition to preventive cleaning and maintenance, the detector should be
functionally tested every six months. The test should also be carried out for any
reason the detector has been opened.
8.4.1 Power Up Procedure
Perform Power-Up procedure every time power is restored to the system. Follow
the instructions in section 7.2.
8.4.2 Functional Test Procedure
Perform a functional test of the detector as described in section 7.4 and 7.5.