
PM05R-XXX-XXX-BXX (en) Page 3 of 12
EXCESSIVE AIR PRESSURE. Can cause per-
sonal injury, pump damage or property damage.
yDo not exceed the maximum inlet air pressure as
stated on the pump model plate.
yBe sure material hoses and other components are
able to withstand fluid pressures developed by this
pump. Check all hoses for damage or wear. Be certain
dispensing device is clean and in proper working con-
dition.
STATIC SPARK. Can cause explosion resulting
in severe injury or death. Ground pump and pumping
system.
yUse the pump ground lug provided. Connect to a 12
ga. (minimum) wire (kit is included) to a good earth
ground source.
ySparks can ignite ammable material and vapors.
yThe pumping system and object being sprayed must
be grounded when it is pumping, ushing, recirculat-
ing or spraying flammable materials such as paints,
solvents, lacquers, etc. or used in a location where
surrounding atmosphere is conducive to spontaneous
combustion. Ground the dispensing valve or device,
containers, hoses and any object to which material is
being pumped.
ySecure pump, connections and all contact points to
avoid vibration and generation of contact or static
spark.
yConsult local building codes and electrical codes for
specic grounding requirements.
yAfter grounding, periodically verify continuity of
electrical path to ground. Test with an ohmmeter
from each component (e.g., hoses, pump, clamps, con-
tainer, spray gun, etc.) to ground to ensure continuity.
Ohmmeter should show 0.1 ohms or less.
ySubmerse the outlet hose end, dispensing valve or
device in the material being dispensed if possible.
(Avoid free streaming of material being dispensed.)
yUse hoses incorporating a static wire.
yUse proper ventilation.
yKeep inammables away from heat, open ames and
sparks.
yKeep containers closed when not in use.
Pump exhaust may contain contaminants.
Can cause severe injury. Pipe exhaust away from work
area and personnel.
yIn the event of a diaphragm rupture, material can be
forced out of the air exhaust muer.
yPipe the exhaust to a safe remote location when
pumping hazardous or inammable materials.
yUse a grounded 3/8” minimum ID hose between the
pump and the muer.
HAZARDOUS PRESSURE. Can result in seri-
ous injury or property damage. Do not service or
clean pump, hoses or dispensing valve while the sys-
tem is pressurized.
yDisconnect air supply line and relieve pressure from
the system by opening dispensing valve or device and
OPERATING AND SAFETY PRECAUTIONS
READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE.
/ or carefully and slowly loosening and removing out-
let hose or piping from pump.
HAZARDOUS MATERIALS. Can cause serious
injury or property damage. Do not attempt to return
a pump to the factory or service center that contains
hazardous material. Safe handling practices must
comply with local and national laws and safety code
requirements.
yObtain Material Safety Data Sheets on all materials
from the supplier for proper handling instructions.
EXPLOSION HAZARD. Models containing
aluminum parts cannot be used with 1,1,1-trichlo-
roethane, methylene chloride or other halogenated
hydrocarbon solvents which may react and explode.
yCheck pump motor section, uid caps, manifolds and
all wetted parts to assure compatibility before using
with solvents of this type.
Verify the chemical compatibility of the
pump wetted parts and the substance being pumped,
flushed or recirculated. Chemical compatibility may
change with temperature and concentration of the
chemical(s) within the substances being pumped,
ushed or circulated. For specic uid compatibility,
consult the chemical manufacturer.
Maximum temperatures are based on me-
chanical stress only. Certain chemicals will signifi-
cantly reduce maximum safe operating temperature.
Consult the chemical manufacturer for chemical com-
patibility and temperature limits. Refer to PUMP DATA
on page 1 of this manual.
Be certain all operators of this equipment
have been trained for safe working practices, under-
stand it’s limitations, and wear safety goggles / equip-
ment when required.
Do not use the pump for the structural sup-
port of the piping system. Be certain the system com-
ponents are properly supported to prevent stress on
the pump parts.
ySuction and discharge connections should be flex-
ible connections (such as hose), not rigid piped,
and should be compatible with the substance being
pumped.
Prevent unnecessary damage to the pump.
Do not allow pump to operate when out of material
for long periods of time.
yDisconnect air line from pump when system sits idle
for long periods of time.
Use only genuine ARO® replacement parts to
assure compatible pressure rating and longest service
life.
Install the pump in the vertical position.
The pump may not prime properly if the balls do not
check by gravity upon start-up.
Re-torque all fasteners before operation.
Creep of housing and gasket materials may cause
fasteners to loosen. Re-torque all fasteners to ensure
against uid or air leakage.
Replacement warning labels are available
upon request: “Static Spark” pn \ 93616-1, Diaphragm
Rupture” pn \ 93122.
EXCESSIVE AIR PRESSURE
STATIC SPARK
HAZARDOUS MATERIALS
HAZARDOUS PRESSURE