Graco Therm-O-Flow 200 Instructions Manual page 37

4. Push and hold the blow-off air push button (S). The
platen will begin to raise.
S
TI8142A
5. When platen is clear of the drum, increase the ram
up pressure to 10-15 psi (69-103 kPa, 0.69-1.03
bar) to continue to raise the heated follower plate.
6. Once the ram is in the full up position place the drip
shield tray in the brackets provided.
Never reach under the heated platen after it leaves
the drum. Serious burns could result from dripping
material.
7. Follow the steps in Material Loading (page 29) and
Prime Pump (page 31).
8. After drum change, press the Pump Ready Button
to reverse the air motor control.
9. Prime the pump.
It is only necessary to lubricate the platen seals on
initial material loading.
311208P
T
TI8142A
For tandem systems the pump ready button will
turn the air motor on for approximately 5 minutes to
prime the pump. This can be repeated as neces-
sary.
If both unloaders in the system are empty, the
pump ready and transition sequence will depend on
the unloader to transition to the Run state.
✓ Active unloader cleared. Inactive unloader empty.
• Pressing the pump ready button while the
active unloader is in the Heat On state will
cause the active unloader to transition to
the Run state.
✓ Inactive unloader cleared. Active unloader empty.
• Pressing the pump ready button while the
inactive unloader is in the Heat On state
will cause the inactive unloader to transi-
tion to the Ready state. The active state
can then be transitioned to the loaded unit.
✓ Both unloaders cleared before pressing Pump
Ready.
• Pressing the pump ready button while the
inactive unloader is in the Heat On state
will cause the inactive unloader to transi-
tion to the Ready state. The Transition but-
ton must be pressed to transfer active
unloader status to the Ready unloader.
Pressing the Pump Ready button again
while the now inactive loader is in the Heat
On state, will cause the inactive unloader to
transition to the ready state.
• Pressing the Pump Ready button while the
inactive unloader is in the Heat Off state
and the active unloader is in the Heat On
state will cause the active unloader to tran-
sition to the Run state.
• This sequence is required to force the user
to only engage one unloader at a time. This
prevents accidental pumping of air into the
system.
Operation
37