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3. Optional: Installing Additional Heaters
The heated proportioner packages include two
heaters, one for each component. If your applica-
tion requires a higher temperature than one heater
per component can achieve, the heater bracket
can accommodate two additional heaters.
Kit No. 241186 is available. Each kit includes
plumbing for one additional heater.
Connecting heaters in series allows you to spray at
a higher temperature, because the second heater
increases the fluid temperature achieved by the
first heater.
Heaters in series can also equalize temperature of
the fluid components when the ratio of A to B is
different. For example, a 4:1 ratio of A to B means
that component A flows through the heater faster
than component B, therefore the temperature of
component A will be less than component B. Using
a second or a third heater in series on the A side
will equalize the temperature of the components.
Contact your Graco distributor for further informa-
tion.
Reservoir
Heater
NOTE: This configuration is used both on the
A Component and on the B Component sides.
Fig. 5
Installation
Proportioner
Pump
Recirculation Line
Optional Heater Configurations
In addition to the standard configuration described
on page 11, the heaters can be installed in three
optional positions in the fluid flow. These configu-
rations are briefly described below. Contact your
Graco distributor for further information.
a. Option 1, for batch mode applications
(reservoirs are filled manually): This config-
uration is the same as the standard, but feed
pumps are not used. Install the heaters on the
recirculation lines between the fluid cabinet
and the reservoirs. See Fig. 5. Fill the reser-
voirs manually. To heat cold material in the
reservoirs, set the heaters to the desired
temperature, open the recirculation valves and
circulate the fluid using the proportioner pump.
When the fluid temperature in the reservoirs
reaches the desired level, close the recircula-
tion valves and open the mix manifold valves.
Spray one batch at a time, then repeat the
process.
Fluid Cabinet
Mix Manifold
Gun
8683A
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