Flushing The System - Graco Therm-O-Flow 5 Instructions-Parts List Manual

Flushing the System

Flushing the system before its initial use can prevent
material contamination, which may cause the material
to fail or perform poorly.
CAUTION
Flush the system before performing the initial
material loading procedure. The system was facto-
ry-tested using a light soluble oil, a soybean oil, or
some other oil as tagged. Flush the system to avoid
contaminating the material that has been designated
for initial material loading.
To flush the system, perform the following procedure:
1. Select the material for the initial material load.
2. Verify whether the factory-test oil and the initial
material load are compatible:
a. If the two substances are compatible, omit the
remaining steps in this procedure and perform
the Initial Material Loading procedure on
page 20.
b. If the two substances are incompatible, per-
form the remaining steps in this procedure to
flush the system.
WARNING
Use fluids and solvents that are chemically compat-
ible with the equipment wetted parts. See the
Technical Data sections of all the equipment
manuals. Always read the material manufacturer's
literature before using fluid or solvent in this pump
and always provide adequate ventilation.
3. Select a drum containing solvent that can dissolve,
clean, and eliminate the factory-test oil from the
system. If necessary, check with Graco or the ma-
terial supplier for a recommended solvent.
4. Before flushing, be sure the entire system and
flushing drums are properly grounded. Refer to
Ground The System, on page 14.
5. Perform steps 1 through 7 of the Initial Material
Loading procedure on page 20 to load the drum
containing the solvent.
6. Flush the solvent through the system for approxi-
mately 1 to 2 minutes.
7. Remove the drum containing the solvent.
8. Perform the Initial Material Loading procedure
on page 20.
Installation
Starting Up the System
To help avoid damage to equipment, be sure to open
the dispense valve during system heatup to alleviate
pressure which might occur in the system due to ma-
terial expansion.
1. Check all material hoses and fittings to insure
tightness and to prevent any material leakage.
2. Check all system air and electrical lines. Make
sure that all routing of air and electrical lines will
not interfere with any moving components within
the fixture.
3. Raise the arm, using the following procedure:
a. Close all air regulators.
b. Move the ram hand valve lever to the UP posi-
c. Slowly open the air regulators until the ram
d. When the follower plate is above the height of
4. Turn the electrical disconnect ON.
5. On the electrical control panel, turn the CONTROL
ON switch to ON.
6. Check the temperature controller set points and
change them if necessary. See Changing the Set
Point in form# 309100.
7. Wait until all system zones are heated to the pre-
set temperatures. Go to the next section, Initial
Material Loading.
WARNING
PRESSURIZED EQUIPMENT HAZARD
To reduce risk of injury or equipment
damage:
D Make sure all material hose connec-
tions are secure.
D Make sure system is ready to pres-
surize before pressurizing system.
CAUTION
tion.
starts to move up.
the material drum to be used, move the ram
hand valve lever to OFF.
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