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Fill Heating Fluid
Fill the hopper's outer jacketed area with oil or a 50%
water and 50% ethylene glycol mixture to heat your
spray material. The double wall hopper design prevents
the spray material from losing heat during downtime and
overnight.
NOTICE
Algae can form inside the outer jacketed area if you
are using only water to heat your spray material.
Always add ethylene glycol to the water to prevent
the formation of algae.
Replace heating fluid inside hopper once a year to
improve heating efficiency. See Check Heating
Fluid Level on page 18.
Table 1: Fluid Capacities of 20 Gal. Hopper
Gallons (Liters) of
Heating Fluid
12 (45)
1. Remove plug (6) from opposite end of 3/4 npt filling
port.
F
. 19: Filling Overflow Port
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2. Insert fluid hose into one filling port and place an
empty 5 gallon pail beneath opposite filling port to
catch access fluid from filling port.
312747L
Gallons (Liters) of
Spray Material
20 (76)
6
3. Fill outer jacketed area of the hopper through the fill-
ing port until the fluid reaches the opposite fill port
when using the Immersion Heater Kit 256257,
page 12.
NOTICE
Do not fill the outer jacketed area fully if using the
hopper or hose circulation kit. See fill instructions in
the Hopper or Hose Circulation Kit manual. Overfill-
ing may cause heating fluid to overflow vent fittings
(see F
. 21) during startup.
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NOTICE
Do not plug top ports. Always have venting fittings
(36, 39) installed to prevent outer cavity pressuriza-
tion. Failure to do so may cause leakage into spray
material.
4. Vent fittings may be installed on either side. See
F
. 21 for correct orientation of venting fittings.
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39
36
F
. 20: Install Venting Fittings
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Setup
15
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