User's Manual

Maintenance
3A0294G 71
Maintenance
Preventive Maintenance
Schedule
The operating conditions of your particular system
determine how often maintenance is required. Establish
a preventive maintenance schedule by recording when
and what kind of maintenance is needed, and then
determine a regular schedule for checking your system.
Pump Maintenance
Wet Cup
Check the wet cup daily. Keep it 2/3 full with Graco
Throat Seal Liquid (TSL) or compatible solvent.
Corrosion Protection
Always flush the pump before the material dries on the
displacement rod. Never leave water or water-based
material in the pump overnight. First, flush with water or
a compatible solvent, then with mineral spirits solvent
(or white spirit). See Prime/Purge, page 52, for flushing
instructions. Relieve the pressure (see Operation, page
62), but leave the mineral spirits in the pump to protect
the parts from corrosion.
Seals
Once a week, check and tighten throat seals on pump.
Be sure to follow the Operation, page 62, prior to tight-
ening seals.
Supply System Maintenance
Platen Maintenance
If the platen does not come out of the pail easily when
the pump is being raised, the air assist tube, or check
valve may be plugged. A plugged valve prevents air from
reaching the underside of the plate to assist in raising it
from the pail. See the Supply Systems Repair-Parts
manual for instructions.
Adjust Spacers
Adjust spacers to be used with tapered pails if neces-
sary. See the Supply Systems Repair-Parts manual for
instructions.
Replace Wipers
To replace worn or damaged wipers, see the Supply
Systems Repair-Parts manual for instructions.
Cleaning Procedure
1. Ensure all equipment is grounded. See Installation,
page 16.
2. Ensure the area where the system will be cleaned is
well ventilated; and remove all ignition sources.
3. Relieve pressure. See Operation, page 62.
4. Shutdown system and turn off all power. See Shut-
down, page 70.
5. Clean external surfaces only using a rag soaked in
solvent that is compatible with the dispense material
and the surfaces being cleaned.
6. Clean the display with any alcohol-based household
cleaner, such as glass cleaner.
7. Allow enough time for solvent to dry before using
system.
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 51.