Labconco Protector Controlled Atmosphere Glove Boxes 5080102 - Manual (Page 13)

INSTALLATION
14
Gas and Vacuum Internal Connections (Models 506000000, 506010000, 507000000 and
507010000)
Before making gas and vacuum connections on all models except 508000000 or
508010000, determine if the transfer chamber should be backfilled with gas directly from your
inert gas supply tank or from the glove box. If the transfer chamber is to be backfilled from the
glove box on Models 506000000 and 506010000 (without automatic pressure control), it will be
necessary to throttle the glove box “gas in” manual valve and the transfer chamber “gas fill”
manual valve while the transfer chamber is filling in order to prevent excessive glove box
decompression.
The glove box has been shipped with internal connections made for backfilling the transfer
chamber from the gas supply tank. If this is the method desired for backfilling, no other internal
connections are required. However, if you desire to backfill the transfer chamber from the glove
box, it will be necessary to make internal reconnection as follows: See Figure 6.
1. Remove rear access panels with Phillips type screwdriver.
2. Disconnect the transfer chamber “gas fill” tube from the Swagelok union located above the
transfer chamber.
3. Remove the Swagelok plug from this tee.
4. Install the tube assembly (Catalog No. 5079500) supplied with your unit.
5. Reinstall rear access panel.
Models 508000000 and 508010000 are supplied with internal connections and solenoid
valves to allow the user to select the gas source for transfer chamber backfilling by actuating “gas
source” switch on the front control panel. No internal reconnection is required.
Figure 6