Graco 3A2264A User Manual download pdf (Page 11)

Startup

3A2264A 11

Startup

Flush Before Using Equipment

The pump was tested with lightweight oil, which is left in

the fluid passages to protect parts. To avoid contaminat-

ing your fluid with oil, flush the pump with a compatible

solv

ent before use. See your pump manual for flushing

directions.

1. Perform Setup on pa

ge 9.

2. Verify the following:

• That you have equal line air pressure supplied

o both A & B units within 5 psi (35 kPa, 0.3 bar)

of each other.

• The Bypass/Prime ball valves (item L in F

IG. 1,

page 7) are closed,

• That the air motor regulators are adjusted to

30 psi (210 kPa, 2.1 bar)

NOTICE

3. Position both A & B units about half way up, place in

“N

eutral”, and open both motor isolation slider

valves (item BA in F

IG. 2 on page 8).

4. Verify that only one ram unit motor cycles.

5. Go to the “Active” ram with the cycling motor and

lower it to the bottom.

6. Verify that the cross bar contacts and actuates the

Air Limit Valve when lowered and that the Ram

Crossover occurs.

NOTE: T

he motor of the ram lowered should stop and

become “Inactive” and the opposite ram motor should

begin to cycle becoming “Active”).

7. Verify that the Bypass/Prime function works on the

“I

nactive” ram by opening the Bypass/Prime ball

valve. The “Inactive” ram motor should begin to

cycle (the “Active” ram should continue to cycle).

8. Close the Bypass/Prime ball valve.

9. Raise the “Inactive” ram about half way and place in

“Neutral”.

10. Move to the current “Active” ram and lower it to the

bottom.

11. Verify that the cross bar contacts and actuates the

Air Limit Valve when lowered and that the Ram

Crossover occurs.

NOTE: Th

e motor of the ram lowered should stop and

become “Inactive” and the opposite ram motor should

begin to cycle becoming “Active”).

12. Verify that the Bypass/Prime function works on the

“I

nactive” ram by opening the Bypass/Prime ball

valve. The “Inactive” ram motor should begin to

cycle (the “Active” ram should continue to cycle).

13. Close Bypass/Prime ball valve.

14. Lower the “Active” ram to the bottom. Verify that

Ram Crossover does not occur.

NOTE: Wh

en an Active ram is lowered while the Inactive

ram is still lowered, a crossover should not occur. A

crossover in this condition could be caused by an air

leak, unequal supply line pressures, or a problem with

the 4-way Remote Air Valve.

15. Raise the opposit ram.

. Verify that crossover occurs when the Air Limit Valve

is deactivated. Lower the same ram and verify that

Ram Crossover does NOT occur.

17. Startup Complete.

To prevent pump seal damage, adjust the pressure

wn if the motor cycles too rapidly during the follow-

ing test procedure

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Graco 3A2264A User Manual Page 11

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