Maintenance - Graco PPM 100 Instructions Manual

WARNING
Pressure Relief Procedure
Before checking, cleaning, or servicing the meter,
always follow this procedure to reduce the risk of
serious injury, including splashing fluid in the eyes
or on the skin, or injury from moving parts, fire, ex-
plosion, or electric shock.
1. Turn off the fluid supply to the meter.
2. Shut off all electrical power to the fluid system
or air system.
3. Follow the Pressure Relief Procedure for your
fluid system dispensing device.
CAUTION
Do not immerse the meter in solvent. Solvent could
damage the meter's electrical components.
1. Clean the fluid filter periodically to avoid damage to
the meter's main fluid chamber.
2. A cover is supplied with the flow meter to prevent
paint buildup on the meter face. Clean the cover
and outside of the meter with a soft cloth damp-
ened in a compatible solvent as needed.
3. Flush the fluid supply line and meter fluid reservoir
daily with a compatible solvent as instructed below.
NOTE: The 3/8 npt hex nipple is permanently bonded
to the meter body to ensure a permanent fluid seal. Do
not remove these fittings.
Flushing the Meter
1. Follow the Pressure Relief Procedure, above.
2. Connect the fluid line to the solvent supply unit.
3. Flush the meter until it is clean.
4. Follow the Pressure Relief Procedure, then dis-
connect the fluid line from the solvent supply unit.
5. Reconnect the fluid line to the fluid (paint) supply.
6. Turn on the fluid supply.
7. Operate until the meter and fluid line are free of
solvent.
CAUTION
If the system will be shut down for any length of
time, be sure to leave a small amount of thinner
inside the flow meter chamber. Allowing the cham-
ber to dry up may cause the rotor to adhere to the
chamber.

Maintenance

Cleaning the Meter Chamber
1. Follow the Pressure Relief Procedure Warning,
at left.
2. Remove the four hexagonal bolts (17). See Fig. 5.
3. Separate the display module (C) and fluid chamber
(D).
NOTE: Replace the o-ring (3) whenever the meter is
disassembled.
4. Rotate the chamber and rotor (E) slightly by hand.
If the rotor doesn't turn smoothly, remove rotor
from the chamber and clean both with thinner.
The flow meter rotor is calibrated with the fluid
chamber it is assembled into. After cleaning the
rotor, be sure to install it back into its original fluid
chamber. Installing the rotor in another fluid cham-
ber will affect the meter accuracy.
Fig. 5
Changing the I.S. Power Pack
To reduce the risk of fire, explosion, or electric
shock, always replace power pack or repair elec-
tronic module outside the hazardous location.
Do not disconnect the old power pack from the me-
ter connector until the new power pack is complete-
ly connected to the extra meter connector. If both
power pack connectors are disconnected at the
same time, the total cumulative flow will be lost
from the meter's memory.
CAUTION
3
E
D
WARNING
CAUTION
C
17
01064