Maintenance - Patol 5000 Series Manual

6.

MAINTENANCE

6.1 General
It is recommended that a System Log Book / File is raised at the Commissioning Stage and
that the system configuration and initial settings recorded. These should include:-
• Operation configuration and Sensitivity - DIL switch set-up.
• Supply voltage.
Subsequently all system events should be recorded in the log.
These should include all maintenance activity, changes to settings, Fault warnings and
Alarm/Trip occurrences. (including cause and actions taken ).
An operational regime should be developed that includes both frequent inspection of the
Sensor Head for undue accumulation of dust, and to confirm air (blower) operation. The
regime should encompass use of the Lamp & Head Test controls to check basic operation.
In addition, the system should be subjected to a periodic service as defined in the
following.
6.2 Purge Air Filter
The blower filter should be removed and washed using a warm water soap solution.
The use of solvent cleaners is not recommended.
6.3 Fault Monitoring Functions
Tests should be conducted to confirm the correct operation of the fault monitoring circuits :-
6.3.1
6.3.2
6.3.3
6.4 Infra-red Detection
A heat simulation test should be conducted by moving a "hot" (IR emitting) target into the
view field of the Sensor Head and checking the consequential Alarm/Trip operation.
The controller may be temporarily set for auto reset mode by means of the DIL switch.
The "window" of the Sensor Head will momentarily illuminate Red on any Detector trigger.
It is preferable that the "test target" is of sufficient size and temperature to enable
simulation at the plane of the monitored path (conveyor) in order to validate the view field of
the Sensor . Smaller and/or cooler "test targets" may be used closer to the Sensor so as to
at least confirm basic operation of the Sensor.
Fig.5 in Section 2.4 indicates the relationship between the surface area and temperature
required for triggering at the various trip settings.
If the location of the Sensor is classified as a "Hazardous Area" it may be necessary to
make special arrangements for this testing as the electrical / hot nature of the test
simulation will breach normal regulations. It may even be that the test is precluded.
Potential "test targets" are :-
Type 5501 Infra-red Radiator - Test and Commissioning Platen - Patol product.
100W Lamp Bulb - (The Sensor responds to the glass temperature - not the visible light).
Domestic Flat Iron (smoothing iron).
Electrical or Catalytic soldering iron.
Note : Infra-red LED Torches are NOT suitable for testing 5000 Series equipment.
Patol Limited
Series 5000 - Manual 5010 / 5020
Purge Air Pressure - Check as per 4.3.6
Auxiliary Fault - Check as per 4.3.7
Supply Failure - Check as per 4.3.8
Rectory Road, Padworth Common, Berkshire, United Kingdom.
Tel: +44 (0) 118 9701701
D1125 - Issue 2 - 1 December 2009
Patol Limited
Fax: +44 (0) 118 9701700
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