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.
OPERATING INSTRUCTIONS
y Always flush the pump with a solvent compatible with |
the material being pumped if the material being pumped |
is subject to “setting up” when not in use for a period of |
time. |
y Disconnect the air supply from the pump if it is to be in- |
active for a few hours. |
y The outlet material volume is governed not only by the |
air supply, but also by the material supply available at the |
GENERAL DESCRIPTION
The ARO diaphragm pump offers high volume delivery even at low air pressure. ARO pumps feature stall resistant design, modular air motor / fluid sections.
Air operated double diaphragm pumps utilize a pressure dif- ferential in the air chambers to alternately create suction and a positive fluid pressure in the fluid chambers, ball checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to pump and keep up with the demand. It will build and maintain line pressure and will stop cycling once maxi- mum line pressure is reached (dispensing device closed) and will resume pumping as needed.
AIR AND LUBE REQUIREMENTS
WARNING EXCESSIVE AIR PRESSURE. Can cause pump damage, personal injury or property damage.
yA filter capable of filtering out particles larger than 50 microns should be used on the air supply. There is no lu- brication required other than the “O” ring lubricant which is applied during assembly or repair.
yIf lubricated air is present, make sure that it is compatible with the “O” rings and seals in the air motor section of the pump.
inlet. The material supply tubing should not be too small |
or restrictive. Be sure not to use hose which might col- |
lapse. |
y When the diaphragm pump is used in a |
(flooded inlet) situation, it is recommended that a “check |
valve” be installed at the air inlet. |
y Secure the diaphragm pump legs to a suitable 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 in- formation.
yCertain ARO “Smart Parts” are indicated which should be available for fast repair and reduction of down time.
yService kits are available to service two separate dia- phragm pump functions: 1. AIR SECTION, 2. FLUID SEC- TION. The Fluid Section is divided further to match typical active Material Options.
yProvide a clean work surface to protect sensitive internal moving parts from contamination from dirt and foreign matter during service disassembly and reassembly.
yKeep good records of service activity and include the pump in preventive maintenance program.
yBefore disassembling, empty captured material in the outlet manifold by turning the pump upside down to drain material from the pump.
y Loctite® is a registered trademark of Henkel Loctite Corporation y ARO® is a registered trademark of
y Santoprene® is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. y
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