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2. Description (continued)
Gas Phase Filter Monitoring
Loctite recommends two different ways for maintaining and monitoring gas phase filters,
depending on the application and purpose of the gas phase filter:
A) For the removal of odors as a nuisance only and for gases not exceeding the TEL-values
established by OSHA upstream (at air inlet):
Replace the filter media in any of the following cases:
•As soon as odors becomes noticeable.
•At least every 6 months, as most gas phase filter media achieve saturation by adsorbing
moisture from ambient air.
B) For toxic gases which do exceed TEL-values established by OSHA upstream of the filter
unit (at air inlet):
•Establish the lifespan of the filter media depending on the local site conditions.
•Monitor the lifespan of the filter media.
•Replace the filter media as soon as the lifetime of the filter media is reached.
The lifetime of the gas phase filter can be determined by initial periodical testing of the exhausted
air for contamination. The lifetime is measured in operating hours until breakthrough occurs. An
optional way is a laboratory evaluation of the spent gas phase filter media after a certain time
period. For further information, contact our customer service department.
2.4 Thermal Overload Protection
The filter unit motor is equipped with factory installed automatic thermal overload
protection. In case of overheating, the motor is automatically turned off, preventing
premature burnout of the motor windings.
Caution!
Motor may start up automatically –the automatic thermal overload protection will turn the motor
on automatically as soon as the motors cools down again.
•Overheating of the motor can result from the following:
•Saturated filter –An accumulation of contaminates clogs the filter and the air volume decreases.
This results in insufficient air available for cooling, and therefore overheating results.
•SOLUTION: Change filter inserts regularly!
•Blocked Flow –Insufficient air volume due to other reasons, such as a bent connection hose or
foreign matter obstructing the airflow.
•SOLUTION: Straighten hoses and check air passage for foreign material.
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