Micropack FDS301 - Fault Finding; 7.1 Removal of Electronics; 7.2 Replacement of Electronics; 7.3 Diagnostics

7
Fault
Findin
g
7.1
Removal of the Electronics
Warning - there are no user replaceable parts within the electronic module. Any attempt to repair
or dismantle the electronic sub-assemblies will void the warranty. If any fault is suspected within
the electronics module, the module is to be returned to Micropack for investigation and repair if
required. Any faults should be reported to Micropack as per the instruction in section 6.2.
Removal of the electronics should only be performed by competent personnel.
The following is the procedure for removal of the electronic module:-
1.
2.
3.
4.
5.
Loosen the allen screw that secures the lens cap to the housing.
Un-screw the lens cap assembly and remove.
Gently un-screw the three screws indicated on the label until they freely turn.
Please note these screws are not removable.
Grasp the two screws positioned at the bottom of the detector and pull the electronics
module out of its housing.
7.2
Re
p
lacement of the Electronics
The followin
g
is the
p
rocedure for Installation
o
f
the
electronic
module:-
1.
2.
3.
Insert the electronic module with the LED positioned at the bottom of the housing.
Rotate the module clockwise and anti-clockwise until the locating pins click into position.
Push the electronic assembly into the housin
g
until the face
p
late is flush with the front of the
housing. Note: This should take minimum force if the locating pins are in position.
Gently screw the three screws indicated on the label in until they bottom into their counter
sinks Note: Do not over tighten.
Grease and replace the lens cap.
Tighten the lens cap Allen locking screw.
4.
5.
6.
7.3
Dia
g
nostics
It is impossible to provide fault diagnostics for every possible detector fault. In all cases it is
advised that the following best practise is followed:
•
Only make one change at a time (changing more than one thing makes diagnosis very
difficult).
Check the most obvious possible causes first.
Work systematically through the problem.
Keep good notes on the original problem, each step taken and the results observed.
•
•
•
This document is strictly private and confidential, reproduction without Micropack approval is prohibited. © Micropack Engineering Ltd, 2015
FDS301 Flame Detector FDS301 Safety and Technical Manual
27
Ref: 2200.5009 Rev: 2.3 ECN 4434