Specifications
Installation
Compressed Air Hook-Up
1. At the rear of the furnace is located a 0.250 inch
tube fitting.
2. Using 0.250 inch I.D. rubber tubing, connect a
length of tubing from this input fitting to a corre-
sponding 0.250 inch fitting located on the regu-
lated side of a pressurized air service line.
3. Prior to making connections at the regulator,
ensure that the regulator is turned fully closed (0
psi).
4. Turn flow control valve located at the bottom of
the flow meter (front control panel) fully clock-
wise to closed position.
5. Turn regulator to maximum output pressure of
20 psi. Check for any leaks at connection points
of connecting tubing.
6. Open flow control valve slowly until ball in flow
meter reads between 40 to 45 liters per minute
flow rate.
7. Open furnace door and check that air is
exhausting from the manifold located at the bot-
tom rear of the chamber.
8. Turn flow control valve to off (fully clockwise).
Exhaust Tubing Hook-Up
Using accessory stainless steel tubing available from
Barnstead/Thermolyne Corporation (part number
AY408X1A) or equal quality 2.5 inch I.D. stainless steel
tubing, connect flexible tubing from vent port at top of fur-
nace case to an appropriate negative pressure exhaust
system. This exhaust system must be capable of handling
smoke and gases produced in an ashing procedure.
33
Installation and Operation of
Air Control
Note
Coal ashing furnaces -60 models con-
tain a feature to provide air (or inert
gas) flow within the furnace chamber.
Note
A pressurized air line with a minimum
working pressure range of 0 to 20 psi
is required.
Note
A flow rate of 40 to 45 liters per minute
will provide three air exchanges of the
chamber per minute.
Note
If the furnace is to be used regularly,
the airline regulator may be left open
to 20 psi.
Note
Appropriate exhaust must be provided
to remove smoke and gases proceed-
ing an ashing procedure.
Note
Failure to connect the exhaust port to
an appropriate exhaust system will
result in smoke and gases filling the
work area. Without the connection,
gases and smoke will escape around
the door seal and at the rear of the fur-
nace.