Removing The Pump From The Dispensing System - Asymtek Heli-Flow DV-8000 Series Owner's Manual

15. Flush the large end of the needle with cleaning solvent.
16. Insert the appropriate size tungsten wire into the needle to open a path through the end of the
needle. Do not force the wire through the needle. If there is a hard plug, proceed as follows:
a. Use the supplied drill bit to remove the plug by gently rotating the bit by hand, being careful
not to run the bit all the way through the needle.
CAUTION!
b. Once you have removed most of the material with the drill bit, try again to push the tungsten
wire through the needle.
c. If the wire still does not go through the needle, try again with the drill bit until you can get the
wire all the way through the needle.
17. Once you have cleared a path through the needle, flush the needle with cleaning solvent until a
clear stream of solvent flows from the end of the needle.
If necessary, use the small bottle brush to remove any residual fluid. Rotating the bottle
brush counterclockwise while slowly inserting it into the needle will pull out any residual fluid.
18. Inspect the seal and the lower bearing for wear. If they are worn, replace them.
19. Reassemble the cartridge as specified in
section.
20. Install a new 90-degree elbow fitting onto the cartridge fitting.
21. Load the cartridge as specified in
22. Prime the pump as specified in

Removing the Pump from the Dispensing System

To remove the pump for servicing (see Figure 5-3):
1. Using the position controls, move the dispensing head to the front center of the dispensing area.
2. Perform a service shutdown as specified in the applicable dispensing system manual.
3. Open the doors/hatch and locate the pump on the dispensing head.
4. Disconnect the following:
a. Syringe air hose from the fluid syringe
b. Power cords for the pump and height sensor (if present) from the dispensing head bulkhead
5. Unscrew and remove the fluid syringe with the receiver head from the syringe fitting.
6. Use a 4 mm hex key to loosen the locking screw on the side of the valve bracket.
7. Carefully lift the pump out of the valve bracket and place it in a safe location for servicing.
Maintenance and Service
Do not run the drill bit all the way through the needle as this will increase the size of
the needle opening.
"Loading a Dispensing
"Priming the
"Assembling a Dispensing
Cartridge" in the
Pump" in the Operation
Cartridge" in the Operation
Operation section.
section.
37