Start and Adjust Pump. Graco 3A5379B, Electric Supply System for Sealants and Adhesives

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Start and Adjust Pump. Graco 3A5379B, Electric Supply System for Sealants and Adhesives | Manualzz

Supply System Operation

6. With hands away from the pail and the platen, push down on the ram director valve (AC) handle, and lower the ram until the platen rests on the lip of the pail. Move the ram director valve handle to the hori zontal position (neutral).

Change Drums

J

D r_255648_313527_7a

7. Lower ram: a. Set the ram director valve (AC) to DOWN and continue to lower the ram until fluid appears at the platen bleed port (J), and close the platen bleed port. Set the ram director valve to neutral, reinstall the vent handle, and tighten securely.

Start and Adjust Pump

1. Connect the pump outlet fittings and the hose (not supplied).

NOTE: Be sure all components are adequately sized and pressure rated to meet the system’s requirements.

2. Turn the driver disconnect switch (K) OFF. Then set the ram air regulator (AB) to about 50 psi (0.35 MPa,

3.5 bar). Set the ram director valve (AC) to DOWN.

3. Turn the driver disconnect switch (K) ON.

4. Start the pump. See Pump Operation on page 13.

5. Keep the ram director valve (AC) set to DOWN while the pump is operating.

NOTE: Increase air pressure to the ram if the pump does not prime properly with heavier fluids. Decrease air pres sure if fluid is forced out around the top seal or platen.

Excessive air pressure in the material drum could cause the drum to rupture, causing serious injury. The platen must be free to move out of the drum. Never use drum blowoff air with a damaged drum.

1. Stop the pump by turning the disconnect switch (K)

OFF.

2. Raise the platen out of the drum.

a. Press and hold the blowoff air button (AG) until the platen (D) is completely out of the drum. Set the ram director valve (AC) to UP to raise the platen (D). Use the minimum amount of air pres sure necessary to push the platen out of the drum.

3. Release the blowoff air button and allow the ram to rise to its full height.

4. Remove the empty drum.

5. Inspect the platen and, if necessary, remove any remaining material or material build–up.

6. Place the full drum on the ram base.

7. Lower the ram and adjust the position of the drum relative to the platen. See Start and Adjust Ram on page 14.

Shutdown and Care of the Pump

1. Set the ram director valve (AC) to DOWN.

2. Follow the Pressure Relief Procedure on page 14.

3. Follow the pump shutdown instructions in the sepa rate pump manual.

3A5379B 15

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