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II.
OVEN TYPE DESCRIPTION
Phoenix DryRod® Flux Ovens are designed to serve their
users with long and faithful service. They will hold or bake
granulated and agglomerated flux and protect it from mois-
ture pick up as long as in operation.
Wiring
Check type and voltage on nameplate.
1. Type 750HT Model 5 (240 volts AC only) 3 phase.
2. Type 750HT Model 5 (480 volts AC only) 3 phase.
Grounding
The 750HT oven has a grounding lug in the upper control
box.
Installation of 480 volt oven
Connect to a 480 volt, 60 cycle, 3 phase power source.
Conduit openings (1/2") are provided in the wiring compart-
ment for this purpose. A three-pole disconnect switch
should be provided since there is no power switch in the
oven itself. Use 10-amp fuses. A schematic diagram of
oven internal wiring follows.
Installation of 240 volt oven
Connect to 240 volt, 60 cycle, 3 phase source. Conduit
openings (1/2") are provided in the wiring compartment for
this purpose. A three-pole disconnect switch should be pro-
vided since there is no power switch in the oven (use 20-
amp fuses). A schematic diagram of oven internal wiring fol-
lows.
Operation
Fill oven with flux and close lid. Set temperature con-
troller at desired temperature; Hold the Ý button and
press the 5 or 6 button to change the set-point.
Initial heating from 70°F to a stabilized temperature of
300°F, takes approximately 4 to 6 hours for a 700 lb.
Load.
Allow enough time after set temperature is
reached to obtain an even load temperature. This can be
checked by drawing off several buckets of flux and
immersing a thermometer or thermocouple in each one.
Draw off hot flux for welding before adding any cold flux
to oven; otherwise, some cold flux at top-center of load
will flow down through the load and be drawn off before it
is heated.
Keep oven as full as possible. This will assure even heat-
ing and prolong element life.
N5406800E-3
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