Fisher Scientific 282A, Инструкция по эксплуатации, Страница: 8 / 25

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Figure 3: Standard Plug Configurations
The supporting bench or table must be capable of holding in excess of 200 pounds. The bench should be sufficient
to accommodate sample-handling processes. The oven itself is 26-inches wide and 23-inches deep; therefore, the
bench surface should be approximately 48-inches wide and 30-inches deep to allow for ventilation clearance at
the rear of the oven.
For installations that may use a tank atmosphere, check that site facilities and tank equipment are in compliance
with OSHA requirements for handling compressed gas. Responsible personnel must also be thoroughly
knowledgeable in the use, storage, and handling of compressed gases.
Fisher Scientific carries a complete line of
accessory equipment for gas cylinders.
When using a tank atmosphere, a 1/4” tube to 1/4” pipe adapter is required for the regulator outlet of the tank.
This adapter is not supplied. A
Swagelok B-400-7-4 adapter, or equivalent, may be used. Also, 9/16”, and 1-1/8”
open-end or, preferably, flare-nut wrenches are required.
Installation
After verifying all site and safety requirements, the following steps should be completed to prepare the vacuum
oven for operation:
1. Verify that all-packing items and securing materials have been removed from the oven.
2. Move the oven to the desired location as specified above.
3. Locate the two serrated hose fittings, packed in the INSTRUCTIONS envelope accompanying each oven.
4. Install the hose fittings on the VACUUM and PURGE ports located on the lower right-side panel. Hose fittings
should be installed by turning the fitting nut clockwise until finger-tight then, using a 9/16” wrench, turn the
nut an additional 1/4-turn while holding the fitting stationary with a 3/8” wrench.
5. Close both the PURGE and VACUUM valves by turning the control knob clockwise as far as possible.
6. Connect a vacuum pumping system, including a suitable trap, to the serrated fitting labeled VACUUM. Use
1/4-inch I.D. heavy-walled vacuum tubing and secure the connection with a hose clamp.
7. If desired, connect a purge gas supply to the serrated fitting labeled PURGE using a suitable length of 1/4”
I.D. tubing. Use a two-stage gas flow regulator if gas is to be supplied by a pressurized cylinder.
WARNING
:
To avoid the risk of fire, provide 6 inches of clearance for the top, back
and sides of the oven. Do not set or lean any objects against or on top of the oven while
hot.
WARNING:
To avoid the risk of electrical shock, verify that the source plug is
properly grounded.
6-15P 5-20P