101
8009389/YN39/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
MAINTENANCE
9.2 Preparation and general preparatory work
Have the following equipment available for service work:
• Personal protective clothing and equipment (see safety information above)
• Means of communicating (telephone/cellular phone/mobile radio) with the personnel
responsible for operating the plant as well as with the signaling control room
• Maintenance protocol
• At least the following tools:
Table 9: Required tools for maintenance work
• For a secure disassembly of the SR-unit with installed probe from the gas duct:
– Suitable support to lay the SR-unit on with mounted measuring probe and attached
plug-in connectors that protrude on the underside securely without them being
damaged.
– Alternatively, the angle flange that was perhaps used during start-up is well suited as
bracket during maintenance work. High sample gas temperatures or space
restrictions (duct insulation), however, can restrict the use of an angle flange.
– If no angle flange is used, a suitable protective cover is required for the duct-side
flange with tube to prevent gases from escaping from the duct when the measuring
probe has been removed.
• Coordinate the repair activities, and the associated interruption in measuring operation,
with the persons responsible for operating the plant.
Tools Required for
2 x 24 mm open-ended
spanners or ring spanners
Installing the measuring probe on the duct.
Open-ended spanner or ring
spanner 19 mm
Installing the measuring probe on the SR-unit and
optical adjustment.
Allen key set
Sealing ring
Sealing the connection between measuring probe and
SR-unit.
Insulated screwdriver set Electrical connection work
TORX screwdriver, size 10 GPP probes
Materials
Optical cleaning cloths without
detergents
SICK Part No. 4003353
Distilled water Moistening the cleaning cloths.
Clean cleaning cloths and a
dusting brush
Cleaning the enclosure as well as internal cleaning of
the purge air filter housing.
Adhesive, recommendation:
quick-drying epoxy resin two-
component adhesive
Fixing the SR-unit: fixing bolts.
Personal protective equipment
Work on gas ducts with hot or aggressive sample gases.
Spare parts
Required for
Replacement filter, Part
No. 5 306 091
Purge air unit.
Replacement sealing ring
Sealing the connection between measuring probe and
SR-unit.