Nordson-EFD-MC800-Operating-Manual.pdf - 第24页

MicroCoat MC800 Lubrication Systems 24 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. IMPORT ANT : Each valve must be fully primed (lub…

MicroCoat MC800 Lubrication Systems

23www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.

System Setup

Check All Connections

1. Check that all connections are correct and secure.

2. Verify that the System Pressure switch is set to the Off

position and the mode switch is set to the Auto/Run

position.

3. Check that the input air supply is connected and set at

4.14bar (60psi).

Fill the Tank Reservoir

Do not overﬁll. Overﬁlling may cause lubricant to ﬂow back

into the regulator in the regulator in the controller.

CAUTION

1. Unscrew the tank cap and ﬁll the tank reservoir with

lubricant to the level indicated on the tank label.

2. Reinstall the tank cap.

Prime the System

1. Set the System Pressure switch to On.

2. Adjust the Tank Air Pressure regulator to 1.03bar (15psi).

Do not set pressure lower than 0.83bar (12psi).

3. Turn the Nozzle Air pressure regulator knob

counterclockwise as far as it will go to prevent nozzle air

from ﬂowing while priming the valves.

NOTE: Regulator knobs have a push-to-lock, pull-to-

unlock feature.

4. Turn all Flow Control knobs completely clockwise until

closed.

5. Set the mode switch to Manual/Setup.

6. Open the valve on the ﬁlter adapter until all the air is

removed.

7. Check for leaks around the ﬁlter and all connections

between the tank and controller.

8. Select one valve and open the appropriate Flow Control

knob about ﬁve full turns (counterclockwise) to ﬁll the

hose and prime the valve.

9. When the lubricant ﬂows in a steady stream, the valve is

primed. Close the Flow Control (turn clockwise).

10. Repeat steps 8 and 9 for each valve.

MicroCoat MC800 Lubrication Systems

24 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.

IMPORTANT: Each valve must be fully primed (lubricant ﬂows

in a steady stream) before adjusting the spray.

Adjust the Spray

1. As a starting point, select one valve and adjust the Flow

Control knob so that lubricant ﬂows from the valve at the

rate of approximately one drop per second.

2. Note the number set on the graduated dial of the open

Flow Control. Set the ﬂow for each remaining valve to the

same setting.

3. Turn the Nozzle Air regulator clockwise until pressure

reads between 0.55 to 0.69bar (8 to 10psi) and the valve

begins to spray. Thicker lubricants may require 0.83 to

1.03bar (12 to 15psi). Push the knob in to lock.

4. Set the mode switch to Auto/Run. The spray will shut off.

The valves are ready to spray when the press is stamping.

5. After starting the press, adjust the Flow Control knobs as

needed to provide proper lubricant coverage.

Preventive Maintenance

The MicroCoat System is designed for long life with minimal maintenance. To ensure trouble-free performance,

follow these precautions and preventive maintenance steps.

Before performing any maintenance, set the System Pressure Switch to the Off position and depressurize the tank

reservoir by lifting the lever on the tank pressure relief valve.

WARNING

• Always use clean lubricant.

• Check for residue at the bottom of the tank reservoir and clean if necessary.

• Do not clean the MC685M or the MC686M tank with chlorinated solvents, aromatic hydrocarbons or any ﬂuid that

will attack acrylics. Use only soap and water, or mineral spirits to clean acrylic tank surfaces.

• Operate the system with clean, dry, oil-free air. Drain the bowl on the ﬁve micron ﬁlter regulator whenever

moisture or oil is present.

• Replace lubricant ﬁlter (P/N 7017347) every 6 months or 1,000 hours of operation.

• Dispose of used oil ﬁlters in accordance with local environmental regulations.

System Setup (continued)

After priming the valve, adjust

lubricant ﬂow to a rate of

approximately one drop per

second.

MicroCoat MC800 Lubrication Systems

25www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.

Spray Valve Maintenance

Before performing any maintenance, set the System Pressure Switch to the Off position and depressurize the tank

reservoir by lifting the lever on the tank pressure relief valve.

WARNING

When using ﬁltered plant air and clean lubricants, the MC785M Series spray valves are designed for long-term

performance without scheduled maintenance.

If lubricant ﬂow stops or becomes erratic, ﬁrst review “Troubleshooting” on page 30. Cleaning the nozzle will

solve most problems related to lubricant ﬂow and spray patterns.

To Clean the Nozzle

Remove the air cap retainer nut, air cap and nozzle from the outlet end of the valve. Clean and reinstall.

Valve Disassembly

NOTE: Refer to the diagram on page 27.

1. Remove air cap retainer nut, air cap and nozzle from the outlet end

of valve.

2. Remove diaphragm chamber cap, diaphragm return spring and

needle / diaphragm assembly from the valve body.

3. Remove diaphragm retaining nut and spring locating washer from

the needle, then remove and discard old diaphragm.

NOTE: Install a new diaphragm (P/N 7021727) each time the valve

is reassembled.

4. Clean all parts in mineral spirits.

Valve Reassembly

NOTE: Refer to the diagram on page 27.

1. Place the new diaphragm over the threaded end of the needle. The black Viton side of the diaphragm should

face the threaded end. The blue-gray PTFE side should face the wetted side of the valve.

2. Place the spring locating washer over threaded end of the needle. The stepped side should face the threaded

end.

3. Install a new diaphragm retaining nut (included with P/N 7021727 diaphragm) and turn it until the nut starts

to feel tight and the diaphragm cannot be rotated on the needle with ﬁngers. Avoid crushing the diaphragm

causing it to bulge away from the washer.

4. Install the needle / diaphragm assembly into the valve body, then install diaphragm return spring and diaphragm

chamber cap, and tighten ﬁrmly.

5. Reinstall the nozzle, air cap and air cap retainer.

The air cap retainer nut should be tightened with a wrench to prevent loosening due to press vibration.

Maintenance Tools

8" adjustable wrench

7/8" open end wrench

5/16" box end wrench

1/4" nut driver