Proof Test Using Shc1 Handheld Interrogator; Inspection; Inspection Of A Unit Fitted With A Standard Weather Protection - Honeywell Searchpoint Optima Plus Safety Manual

MAN0921_Issue 1_05/12
SHC1 Handheld Interrogator
Use these proof test instructions if the SHC1 Handheld Interrogator is
being used to communicate with Searchpoint Optima Plus.
Note: The instructions that follow assume that the SHC1 is connected to the Searchpoint Optima Plus and
switched on, in Optima+ mode, in the Main Menu. See the Searchpoint Optima Plus Operating Instructions,
2108M0550, for further information about the operation of the SHC1 Handheld Interrogator.

2.1 Inspection

2.1.1 Inspection of a unit fitted with a Standard Weather Protection

Searchpoint Optima Plus should be inspected and cleaned.
Caution: Gas readings may be generated during this procedure.
1. Select Calibrate then Display to inhibit the 4-20 mA output signal.
2. Inspect the Searchpoint Optima Plus unit, its junction box and cabling for any signs of physical damage.
3. Using a ½ inch / 13 mm A/F open ended spanner, unscrew the two retaining nuts and remove the
Standard Weather Protection.
4. Inspect the Standard Weather Protection for damage or build up of debris / contaminants. If required,
clean or replace weather protection.
5. Inspect the Dust Barrier and clean or replace if required.
6. Remove the Dust Barrier and inspect the optics.
7. Clean any dust or contaminants from the optics using mild detergent and a soft cloth or cotton bud.
Do not use solvents or abrasive cleaners.
8. Press Escape then Enter to release the 4-20 mA output signal.
9. Block the optical beam (for example using the cleaning cloth).
Optical Beam
10. Confirm that a fault is generated on the 4-20 mA output, either locally or at the controller.
Note: The 4-20 mA output can be monitored either at the control room or locally with a multimeter. When
connecting or disconnecting a multimeter, power off the Searchpoint Optima Plus, otherwise the unit will
indicate a latched warning that the 4-20 mA loop was broken. If this occurs it can be cleared by performing
a Soft Reset.
11. Remove the blockage from the beam.
12. Select Calibrate then Display to inhibit the 4-20 mA output signal.
2. Proof test using
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Searchpoint Optima Plus
Safety Manual