background image

7

307001

Operation

Using Your Proportioning System

When the system is primed and operating, check the
fluid outlet pressure gauges. Check the gauges fre-
quently when using the system. Always make a note of
the pressures indicated. These notes will be helpful in
analyzing any troubles that may occur since a change
in the displacement pump performance will be indi-
cated by a change in the pressure gauge readings.

Note: 

A pressure drop does occur during pump stroke

changeover.

Never exceed 120 psi (0.8 MPa, 8 bar) air pressure to
the pump.

WARNING

Always close the air supply valve to the pump
before operating the drain valves to relieve system
pressure. This will reduce the risk of excessive
pressure buildup in the opposite component hose
and fittings, and component rupture, which can
cause serious injury or property damage.

Lubrication and Care

WARNING

To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the

Pressure Relief Procedure

 on page 6.

Keep the wet cups/packing nuts 1/3 filled with ISO
Pump Oil and check the tightness of the packing nut
weekly. The packing nut should  be tight enough  to
prevent leakage – no tighter. Too tight an adjustment
will cause the packings to bind or wear prematurely
and leak. Always 

relieve the pressure 

before adjust-

ing the packing nut.

Never allow the supply containers to run dry of the fluid
being pumped. A dry container allows air to be
pumped into the system and cause incorrect propor-
tioning. One dry displacement pump can also damage
the other displacement pump because it causes a
pressure rise in the other pump. If the supply container
is dry, stop the pump immediately, refill the container,
and prime the system. Be sure to eliminate all of the
air from the system.

Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the displacement pump
which can damage the throat packings.

Flush all fluid out of the displacement pump whenever
you shut down for overnight or longer and fill the pump
with mineral spirits or rust-inhibiting solvent to prevent
corrosion.

Содержание Hydra-Cat A Series

Страница 1: ...p 600 psi 4 0 MPa 40 bar Maximum Working Pressure Part No 207914 Series E 1 1 Mix Ratio by Volume Includes Model 215932 Displacement Pump Part No 903843 Series A 1 1 Mix Ratio by Volume Includes Model 904287 Displacement Pump This model is certified and approved 307001N 01328 Important Safety Instructions Read all warnings and instructions in this manual Save these instructions Parts ...

Страница 2: ...odify this equipment Use only genuine Graco parts and accessories D Check the equipment daily Repair or replace worn or damaged parts immediately D Do not exceed the maximum working pressure of the lowest rated system component This equip ment has a 600 psi 4 0 MPa 40 bar maximum working pressure D Do not lift pressurized equipment D Route the hoses away from the traffic areas sharp edges moving p...

Страница 3: ...yed D Extinguish all the open flames or pilot lights in the spray area D Electrically disconnect all the equipment in the spray area D Keep the spray area free of debris including solvent rags and gasoline D Do not turn on or off any light switch in the spray area while operating or if fumes are present D Do not smoke in the spray area D Do not operate a gasoline engine in the spray area D If ther...

Страница 4: ...4 307001 Notes ...

Страница 5: ... reduce the risk of static sparking ground the spray er and all other spray equipment used or located in the spray area Check your local electrical code for de tailed grounding instructions for your area and type of equipment Ground all of this spray equipment D Pump use a ground wire and clamp to connect the sprayer to a true earth ground See Fig 1 D Feed pumps use a ground wire and clamp to conn...

Страница 6: ...e risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Procedure on page 6 The displacement pump was factory tested in light oil which was left in to protect the pump parts To prevent contamination of the fluid being pumped flush the pump before using it Be sure the solvent used is compatible with the fluid being pumped Place each pump intake int...

Страница 7: ... always follow the Pressure Relief Procedure on page 6 Keep the wet cups packing nuts 1 3 filled with ISO Pump Oil and check the tightness of the packing nut weekly The packing nut should be tight enough to prevent leakage no tighter Too tight an adjustment will cause the packings to bind or wear prematurely and leak Always relieve the pressure before adjust ing the packing nut Never allow the sup...

Страница 8: ...an service See manual 307430 Pump runs but RES output low on both strokes Dirty worn or damaged RES pump intake valve Clean service See manual 307430 Empty or inadequate fluid supply Refill or change container Pump runs but ISO output low on upstroke Dirty worn or damaged ISO pump piston valve Service See manual 307430 p Worn or damaged ISO pump piston pack ings Service See manual 307430 Pump runs...

Страница 9: ...he displacement rods and secure with the cotter pins 9 Secure the rod extensions to the yoke 18 with the lockwashers 5 and nuts 7 3 Position the tie rods 19 in the tie plate 16 and install the nuts 8 torquing evenly to 30 50 ft lb 47 68 NSm 4 Screw the shouldered nut 15 down onto the yoke 5 Reconnect the ground wire if it was disconnected during service Mixing Antifreeze and Water To ensure comple...

Страница 10: ...81 NUT hex jam 5 8 in 11 2 8 101712 NUT lock 5 8 in 11 4 9 101946 PIN cotter SST 0 125 in 3 2 mm dia 1 50 in 38 1 mm lg 3 10 156082 O RING Model 903843 only 2 14 168418 PLATE adapter 1 15 168453 NUT shouldered 1 16 168600 PLATE tie 1 17 168606 ROD connecting 1 18 168607 YOKE connecting 1 19 171313 ROD tie 10 687 in 272 mm 4 20 171314 EXTENSION displacement rod 2 21 207352 AIR MOTOR See manual 3069...

Страница 11: ...aximum Recommended Pump Speed 60 cycles min 6 gpm 22 8 liters min Recommended Speed for Optimum Pump Life 20 40 cpm Wetted Parts Stainless Steel nitralloy steel Buna n PTFE Mounting Hole Layout Dimensions 7225A 4 75 in 121mm Square Cutout Four 0 438 in 11 1 mm Holes on 5 5 in 140 mm Bolt Circle 7224A 6 375 in 162 mm 1 2 npt f Fluid Outlet 3 4 npt f 1 in npt m 1 1 2 in npt m or 3 4 npt m Fluid Inle...

Страница 12: ...ove The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale Graco makes no warranty and disclaims all implied warranties of merchantability an...

Отзывы: