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66620XĆXĆC

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OPERATING AND SAFETY PRECAUTIONS

READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE.

EXCESSIVE AIR PRESSURE
STATIC SPARK

 

HAZARDOUS MATERIALS
HAZARDOUS PRESSURE

WARNING

EXCESSIVE AIR PRESSURE. Can cause personĆ

al injury, pump damage or property damage.

S

Do not exceed the maximum inlet air pressure as stated on the
pump model plate.

S

Be sure material hoses and other components are able to withĆ
stand fluid pressures developed by this pump. Check all hoses
for damage or wear. Be certain dispensing device is clean and
in proper working condition.

WARNING

STATIC SPARK. Can cause explosion resulting in

severe injury or death. Ground pump and pumping system.

S

Sparks can ignite flammable material and vapors.

S

The  pumping  system  and  object  being  sprayed  must  be
grounded when it is pumping, flushing, recirculating or sprayĆ
ing flammable materials such as paints, solvents, lacquers,
etc. or used in a location where surrounding atmosphere is
conducive to spontaneous combustion. Ground the dispensĆ
ing valve or device, containers, hoses and any object to which
material is being pumped.

S

Use  the  pump  grounding  screw  terminal  provided.  Use  Aro
Part No. 66885Ć1 Ground Kit or connect a suitable ground wire
(12 ga. minimum) to a good earth ground source.

S

Secure  pump,  connections  and  all  contact  points  to  avoid
vibration and generation of contact or static spark.

S

Consult local building codes and electrical codes for specific
grounding requirements.

S

After grounding, periodically verify continuity of electrical path
to ground. Test with an ohmmeter from each component (e.g.,
hoses, pump, clamps, container, spray gun, etc.) to ground to
insure continuity. Ohmmeter should show 0.1 ohms or less.

S

Submerse the outlet hose end, dispensing valve or device in
the material being dispensed if possible. (Avoid free streaming
of material being dispensed.)

S

Use hoses incorporating a static wire.

S

Use proper ventilation.

S

Keep inflammables away from heat, open flames and sparks.

S

Keep containers closed when not in use.

WARNING

Pump exhaust may contain contaminants. Can

cause severe injury. Pipe exhaust away from work area and perĆ
sonnel.

S

In the event of a diaphragm rupture, material can be forced out
of the air exhaust muffler.

S

Pipe the exhaust to a safe remote location when pumping hazĆ
ardous or inflammable materials.

S

Use a grounded 3/4" minimum i.d. hose between the pump and
the muffler.

WARNING

HAZARDOUS PRESSURE. Can result in serious

injury  or  property  damage.  Do  not  service  or  clean  pump,
hoses or dispensing valve while the system is pressurized.

S

Disconnect air supply line and relieve pressure from the sysĆ
tem by opening dispensing valve or device and / or carefully
and slowly loosening and removing outlet hose or piping from
pump.

WARNING

HAZARDOUS MATERIALS. Can cause serious inĆ

jury 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.

S

Obtain Material Safety Data Sheets on all materials from the
supplier for proper handling instructions.

WARNING

EXPLOSION HAZARD. Models containing alumiĆ

num wetted parts cannot be used with III.ĆTrichloroethane, MeĆ
thylene Chloride or other Halogenated Hydrocarbon solvents
which may react and explode.

S

Check  pump  motor  section,  fluid  caps,  manifolds  and  all
wetted parts to assure compatibility before using with solvents
of this type.

CAUTION

Verify  the  chemical  compatibility  of  the  pump

wetted parts and the substance being pumped, flushed or reĆ
circulated. Chemical compatibility may change with temperaĆ
ture  and  concentration  of  the  chemical(s)  within  the
substances being pumped, flushed or circulated. For specific
fluid compatibility, consult the chemical manufacturer.

CAUTION

Maximum temperatures are based on mechaniĆ

cal  stress  only.  Certain  chemicals  will  significantly  reduce
maximum safe operating temperature. Consult the chemical
manufacturer for chemical compatibility and temperature limĆ
its. Refer to PUMP DATA on page 1 of this manual.

CAUTION

Be certain all operators of this equipment have

been trained for safe working practices, understand it's limitaĆ
tions and wear safety goggles / equipment when required.

CAUTION

Do not use the pump for the structural support of

the  piping  system.  Be  certain  the  system  components  are
properly supported to prevent stress on the pump parts.

S

Suction and discharge connections should be flexible connecĆ
tions (such as hose), not rigid piped, and should be compatible
with the substance being pumped.

CAUTION

Prevent unnecessary damage to the pump. Do

not allow pump to operate when out of material for long periods
of time.

S

Disconnect air line from pump when system sits idle for long
periods of time.

CAUTION

Use only genuine ARO replacement parts to asĆ

sure compatible pressure rating and longest service life.

NOTICE

Replacement warning labels are available upon

request:  Static  Spark"  (93616Ć1)  &  Diaphragm  Rupture"
(93122Ć1).

WARNING

CAUTION

NOTICE

= Hazards or unsafe practices which could

result in severe personal injury, death or
substantial property damage.

= Hazards or unsafe practices which could

result in minor personal injury, product or
property damage.

= Important installation, operation or 

maintenance information.

Summary of Contents for ARO 66620 C Series

Page 1: ...rethane 10_ to 150_ F 12_ to 66_ C P V D F KynarR 10_ to 200_ F 12_ to 93_ C SantopreneR 40_ to 225_ F 40_ to 107_ C 0_ to 225_ F 4_ to 107_ C VitonR 40_ to 350_ F 40_ to 177_ C Dimensional Data see p...

Page 2: ...e while the system is pressurized S Disconnect air supply line and relieve pressure from the sys tem by opening dispensing valve or device and or carefully and slowly loosening and removing outlet hos...

Page 3: ...uitable surface to insure against damage by vibration MAINTENANCE Refer to the part views and descriptions as provided on pages 4 through 7 for parts identification and service kit information S Certa...

Page 4: ...4 o d Qty Mtl XX1 637124 X1 92755 1 2 N Y325 16 4 B Y325 230 4 B XX2 637124 X2 2 B Y325 16 4 B Y325 230 4 B XX3 637124 X3 92755 3 2 V Y328 16 4 T Y327 230 4 V XX4 637124 X4 94617 94616 2 T SP Y328 16...

Page 5: ...ENE Green Green S NITRILE Black Red S SANTOPRENE Tan Tan SANTOPRENE Green N A Backup White White URETHANE N A Red VITON Yellow Yellow S Stripe S Dot See item 8 in inset below 21 19 k 22 26 16 59 15 22...

Page 6: ...AL REASSEMBLY NOTES S Air Motor Section Service is continued from Fluid Section repair S Inspect and replace old parts with new parts as necessary Look for deep scratches on metallic surfaces and nick...

Page 7: ...S SECTION DETAIL 109 110 k 112 114 k 113 k 115 111 116 Figure 3 107 127 126Z LUBRICATION SEALANTS IMPORTANT BE CERTAIN TO ORIENT 115 SPACER LEGS AWAY FROM BLOCKING INTERNAL PORTS WHEN REASSEMBLING AIR...

Page 8: ...the inlet thread diameter of the pump for proper flow if high viscosity fluids are being pumped Suction hose must be a non col lapsing type capable of pulling a high vacuum S Check all joints on the i...

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