INTRODUCTION
8. After making certain that container temperature has again stabilized to room temperature, repeat step 4 above.
If the pressure exceeds that in the table for the storage temperature you measured, the refrigerant in the tank has too
much excess air to be used and must be recycled or reclaimed.
If the refrigerant being checked has been contaminated with other refrigerant such as R12, the tank pressure may
indicate it contains air. If the tank is vented and the pressures still indicates a high reading and you think there is a
possibility of the
R134
A
refrigerant being contaminated with R12, the container must be sent to a reclaim facility.
Containers for Storing Recycled Refrigerant
Recycled refrigerant must be stored in DOT CFR Title 49 or UL containers approved for such use. The container must
be specifically marked for the refrigerant type you are storing. The use of unmarked containers can lead to mixing of
refrigerants and consequent air conditioning system failure.
Disposable refrigerant containers should not be used for the storage or recovery of used or recycled refrigerant. Dis-
posable container are the type of container in which virgin refrigerant is often sold.
Any container of recycled refrigerant that has been stored or transferred must be checked prior to its use in accordance
with the temperature / pressure check described previously in "Checking Refrigerant for Excess Air."
New storage tanks must be evacuated to at least
635 mm
(
25 in
) of mercury prior to use. Otherwise, excess air may
be introduced to the refrigerant.
Disposal of Empty or Near-Empty Disposable Containers
Improper scrapping of a disposable container can release some refrigerant into the atmosphere. This must be
avoided by removing any of the remaining contents with a recovery or recycling machine as follows:
1. Attach the service hose of your recovery or recycling machine to the container.
2. Open the container valve and the recovery/recycling equipment shutoff valve and evacuate the container just as
you would a mobile air conditioning system.
3. When the maximum stable vacuum has been achieved, close the container valve and the service hoses valve,
allowing the vacuum to be in the container.
4. Mark the container "empty" and dispose of it properly.
47941906 16/03/2016
13
Summary of Contents for FARMALL 40C
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