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8009389/YN39/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
MAINTENANCE
9 Maintenance
The Gas Analyzer with Measuring Probe GM35 requires very little maintenance. This Section
describes regular maintenance work to be carried out on the GM35 measuring system.
Qualification Inspection and maintenance tasks described in this Section can be carried out by Service
technicians familiar with the device based on the information in these Operating
Instructions and having in-depth knowledge of the relevant safety regulations.
Maintenance intervals
Maintenance intervals depend on individual application conditions and should be clarified
with SICK Service resp. with a trained engineer or technician at the local sales partner.
If no other specifications have been made, the following recommendation is applicable:
• Maintenance interval – 6 weeks
Maintenance protocol
Recommendation Keep a log of maintenance work done. A simple notebook recording maintenance dates,
work done, special observations, and required consumables and spare parts is adequate.
9.1 Safety
CAUTION: Important safety information for all service work
Always observe the following information when carrying out service work to
avoid injury or damage to the measuring system:
• Wear suitable protective clothing and a protective mask when the sample
gas is hot and/or aggressive or has a high dust load, or when the sample gas
duct is pressurized. Never open the enclosure or disengage the quick-
release fasteners without first taking suitable protective measures.
• If the conditions in the sample gas duct are particularly problematic and
hinder or prevent work on the open duct, despite the use of protective
equipment, the maintenance work must be carried out when the sample gas
duct is out of service or after it has been flooded with ambient air.
• The purge air supply must operate constantly, and the SR-unit must not be
opened or swiveled up as long as it is attached directly on the measuring
duct.
• If visual inspection of the power supply cable reveals damage to the
insulation or strain-relief clamp, switch off the power supply to the cable in
question immediately. The work must be performed in the specified
sequence, with the result that the measuring system must be removed
before the cables on the purge air unit are checked.
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