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OPERATION
.
1 ,*,I
WARNING
Pressure
Relief Procedure
To reduce
the risk of serious
bodily
injury,
in-
cluding
injection,
always
follow
this
procedure
when
you stop spraying,
and before
inspecting,
removing,
cleaning
or repairing
any part of the
pump or system.
1. Engage
the safety
latch
if your spray gun or
dispensing
valve has one.
2. Shut off the air to the pump.
3. Close the bleed-type
master air valve.
4. Disengage
the gun or valve safety
latch.
5. Hold a metal part of the spray gun or dispens-
ing valve firmly to the side of a grounded
metal
pail,
and trigger
the gun or valve
to relieve
pressure.
6. Engage the gun or valve safety latch.
7. Open the pump
bleeder
valve,
having
a con-
tainer
ready to catch
the drainage.
Also open
the fluid drain valve,
if your system
has one.
3. Leave the bleeder
valve and fluid
drain valve
open until you are ready to spray or dispense
again.
If you suspect that the spray tip, nozzle or hose is
completely clogged, or that pressure has not been
fully relieved after following
the steps above,
VERY
SLOWLY
loosen
the tip guard,
nozzle,
or
hose end coupling
and relieve pressure
gradually,
then loosen completely.
Now clear the tip, nozzle
or hose.
Flush
the pump
before
using
it for the first
time
to
remove
the No.
10 oil which
is left in after
factory
testing
to protect
the pump from corrosion.
Be sure the
solvent
used
is compatible
with
the
material
to be
sprayed
and the wetted
parts of the pump.
WARNING
Before flushing,
read and follow
the instructions
in the section
Flushing
Safety
on page 3 to
reduce the risk of injection
injury,
static sparking
and splashing.
Starting
and Adjusting
the Pump
Fill the wet-cup
(45) with
Grace
Throat
Seal Liquid
(TSL).
Open the dispensing
valve (K) and slowly
open
the air supply
valve until
the pump
starts.
Allow
the
pump
to cycle
slowly,
at about
40 psi (3 bar) air
pressure,
until all the air is pushed out of the lines. Close
the dispensing
valve-the
pump
will stall against
the
pressure.
If the pump fails to prime properly,
open the
bleeder
valve
(J) slightly.
Use the hole to prime
the
pump
by covering
it until the material
appears
at the
hole, then uncovering
it. See Fig 2.
With the pump and lines primed,
and with adequate
air
pressure
and volume
supplied,
the pump will start and
stop as the dispensing
valve is opened
and closed.
Use
an air
regulator
to
control
pump
speed
and
pressure.
See page 9 for recommended
air regulator.
Always
use the lowest
pressure
necessary
to obtain the
desired results.
WARNING
ALWAYS
keep hands
clear of the intake
valve
housing
while the pump is operating
to reduce the
risk of injuring
or amputating
your hand or fingers.
Lubrication
and Care
For air motor
lubrication,
install an air line oiler as ex-
plained
in INSTALLATION,
page 4.
Keep the wet-cup
(45) filled
with
TSL to prolong
the
packing
life.
Always
flush the pump
before the material
can dry in
the pump and hoses. At the end of each day, if you are
pumping
water
based material,
first flush with
water,
then with
mineral
spirits
to protect
the pump
parts.
Read the section
Flushing
Safety
on page 3 before
flushing.
Never allow the pump to run dry of the material
being
pumped.
A dry pump will quickly
accelerate
to a high
speed,
possibly
damaging
itself.
If your
pump
ac-
celerates
quickly,
or is running
too fast,
stop
it im-
mediately
and check the material
supply.
If the supply
has been exhausted
and air has been pumped
into the
lines, refill the supply container
and prime the pump and
lines with material,
or flush the pump and leave it filled
with a compatible
solvent,
being sure to eliminate
all air
from the system.
306-970
5
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