Sentry CR105 Manuel télécharger pdf (Page 20)

U7698E Flame Detector

Part 334614E

E 2002 Nordson Corporation

Manual 34-49

Optional Test Lamp

An optional test lamp can be used to test the ability of the flame detector to

detect and warn of a fire in the spray booth. The test lamp produces light

with the same frequencies as the light produced by a fire. The test lamp

must be placed very close to the detector and waved back and forth slightly

to initiate a response. Refer to Parts for the part number.

Maintenance

WARNING: Allow only qualified personnel to perform the following tasks.

Follow the safety instructions in this document and all other related

documentation.

WARNING: Keep the detector head lenses clean. Dirty lenses can prevent

the detector heads from detecting a fire in the booth. Failure to observe

this warning could result in property damage or personal injury.

NOTE: Keeping the lenses clean will prevent nuisance fault alarms or

shutdowns. A dirty lens can cause a through-the-lens test to fail, triggering

a fault. If only one detector head is installed, a fault will shut down the

coating system during production.

Daily

Check the detector head lenses daily. If they are dirty, clean them with an

approved low-pressure air gun or an oil- and silicone-free cloth. If

necessary, dampen the cloth with ethyl alcohol. Do not use a

silicone-based product such as commercial window cleaner to clean the

detector head lenses.

NOTE: If the detector head lenses are covered with powder overspray,

check the air supply to the air shields. Air should be supplied at 0.7 bar (10

psi). Make sure the air shield orifices are not clogged.

Periodic

Periodically, check all electrical connections. Tighten any loose terminals.

Replace any wiring that has worn or damaged insulation. Make sure

conduit fittings are tight.

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Sentry CR105 Manuel Page 20