Table of Contents
Advertisement
Pressure Relief Procedure
WARNING
INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause
serious injury. To reduce the risk of an
injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you
D Are instructed to relieve the pressure
D Stop dispensing
D Check or service any of the system equipment
D Install or clean the fluid nozzles
1. Shut off the air to the pump.
2. Bleed off the air pressure by closing the air
regulator (self-relieving type), or closing the
bleed-type master air valve installed upstream of
the air regulator, or disconnecting the air supply
hose at the quick-disconnect.
3. Hold a metal part of the gun or valve firmly to the
side of a grounded metal waster container and
trigger to relieve fluid pressure.
Start-up: Single or Multiple Pump Systems
1. Close the air regulators and bleed-type master air
valves to all but one pump.
2. Open the master air valve from the compressor.
3. For the pump which is connected, trigger the
dispensing valve into a grounded metal waste
container, making firm metal-to-metal contact
between the container and valve. Open the
bleed-type master air valve, and open the pump air
regulator slowly until the pump is running. When
the pump is primed and all air has been pushed
out of the lines, release the trigger.
4. If you have more than one pump, repeat this
procedure for each pump.
NOTE: When the pump is primed, and with sufficient
air supplied, the pump starts when the dispensing
valve is opened and shuts off when it is closed.
12
307878
Operation
5. Set the air pressure to each pump at the lowest
pressure needed to get the desired results.
NOTE: A pump runaway valve can be installed on
the air line to automatically shut off the pump if it
starts to run too fast.
Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a
high speed, possibly damaging itself. If the pump
accelerates quickly or is running too fast, stop it
immediately and check the fluid supply. If the
supply container is empty and air has been
pumped into the lines, prime the pump and lines
with fluid, or flush it and leave it filled with a
compatible solvent. Be sure to eliminate all air
from the fluid system.
The maximum working pressure of each pump in
your system may not be the same. To reduce the
risk of over-pressurizing any part of your system,
be sure you know the maximum working pressure
rating of each pump and its connected compo-
nents. Never exceed the maximum working pres-
sure of the lowest rated component connected to a
particular pump.
To determine the fluid output pressure using the air
regulator reading, multiply the ratio of the pump by
the air pressure shown on the regulator gauge. For
example:
50:(1) ratio x 100 psi air = 5000 psi fluid output
50:(1) ratio x 0.7 MPa air = 35 MPa fluid output
50:(1) ratio x 7 bar air = 350 bar fluid output
Limit the air to the pump so that no air line or fluid
line component or accessory is overpressurized.
6. Read and follow the instructions supplied with
each component in the system.
7. When shutting off the system, always follow the
Pressure Relief Procedure at left.
WARNING
Advertisement
Table of Contents
