Shutdown; Overnight/Weekend; Long-Term Shutdown - Graco Aerobotix RC50 Instructions Manual

Shutdown

Shutdown

Overnight/Weekend

If using Night Mode to circulate chemicals and maintain
chemical temperature, see the Night Mode Operation
section on page 43. Otherwise, follow these steps.
NOTICE
Do not disconnect or relieve tank pressure. Dry air
pressure must be maintained at all times.
1. Turn off all motors using the Machine Control
screen.
2. Turn off main power and lockout.

Long-Term Shutdown

The system must be completely flushed before
long-term shutdown to prevent chemical crystalliza-
tion within the MixHead, metering pumps, tanks,
and chemical lines.
1. Turn off all motors by using the Machine Control
screen.
2. Turn off main power and lockout.
3. Empty both day tanks completely. See Empty the
Day Tank on page 56.
4. Empty metering pump inlet filter by unscrewing
drain plug.
5. Empty metering pumps by unscrewing drain plug on
bottom of pump.
6. Using a bucket to catch spilled material, remove
lowest hose from heat exchanger. This will empty
the heat exchanger and heater, and all chemical
lines above.
7. Tighten metering pump drain plug and reattach heat
exchanger hose.
8. Fill each tank 1/2 full with mesamoll.
9. Remove lock on main power.
44
10. Turn on main power and control power.
11. Run the system in manual mode for 45 minutes.
See Manual, Automatic Modes on page 20.
12. Repeat steps 3 through 11 until the machine is thor-
oughly flushed.
13. Turn off all motors using the Machine Control
screen.
14. Turn off main power and lockout.
313813A