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CD250
Operation and Service Manual
Lily Corporation
Aurora, Illinois 60505-4205
United States of America
1
240 S. Broadway
Ph: 630-892-0860
Fax:630-892-5623
www.lilycorp.com
Product Warranty and Disclaimer
Safety Precautions
The Resin Supply
Fluid Connections
The Air Supply
Requirements and Connections
Operation
Start-Up / Dispensing
To Pause Dispensing
Shutting Down
Clean-Up / Maintenance
Ratio Assurance Test
Changing Ratio
Servicing the System
Lubrication
Ball Valve Seal Replacement
Metering Piston Seal Replacement
Trouble - Shooting
Parts Diagrams
Assembly Drawings
Air Logic Diagram
Model CD250 Service Manual: Ver1.5
2
3
4
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Summary of Contents for Lily Corporation CD250
- Page 1 Lubrication Ball Valve Seal Replacement Metering Piston Seal Replacement Lily Corporation Trouble - Shooting 240 S. Broadway Parts Diagrams Aurora, Illinois 60505-4205 Assembly Drawings United States of America Air Logic Diagram Ph: 630-892-0860 Fax:630-892-5623 www.lilycorp.com Model CD250 Service Manual: Ver1.5...
- Page 2 EXPRESS WARRANTY AND DISCLAIMER OF IMPLIED WARRANTIES Lily Corporation unconditionally guarantees its products to be free of defects in material or workmanship and further warrants that, for a period of three months from date of factory shipment, its products will meet the performance criteria stated in Lily Corporation’s publications.
- Page 3 The dispense hoses are attached to the front of the CD250 Dispenser. They are also identified as “A” and “B”. For the initial setup it doesn’t matter which dispense hose is attached to the outlet fittings, but once the dispenser has been used, care must be taken to insure that the hose used for the “A”...
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Page 4: Air Filtration
CD250 Dispenser. The minimum air pressure required is 60psi. The maximum air pressure to the CD250 dispenser should not exceed 150 psi. For the air requirements of the transfer pumps, refer to the manufacturers operators manual. -
Page 5: Operation
2. You can also turn the CD250 “OFF” by using the switch on the front of the machine. If you turn the machine “OFF”, leave the manual dispense valve “OPEN” until the machine makes a final dispense cycle and returns to the “PARK”... -
Page 6: Shutting Down
2. Adjust the regulator for the CD250 Dispenser to “0” psi. 3. Turn the CD250 “OFF” by using the switch on the front of the machine. When the switch is “OFF”, the CD250 will make a final dispense cycle and return to the “PARK” position. - Page 7 Check the fluid level in the packing cups of the transfer pumps and add Throat Seal Liquid as needed. Ratio Assurance Test The CD250 contains moving parts – wearing parts. Therefore, critical components WARNING! are wearing from the moment the system is energized. It is absolutely essential that this wear be anticipated and monitored.
- Page 8 The above procedure is the only one that assures ratio accuracy. Random volumetric comparisons taken at low pressures or high flow rates do not reveal the condition of the seals. Only an extended and significant fluid pressure can accurately reflect their condition. Model CD250 Service Manual: Ver1.5...
- Page 9 The metering assembly consists of the metering cylinder, metering piston, seal, piston pad, and seal retainer. Metering assemblies for a variety of ratios are available from Lily Corporation. Remove the lower panels from the CD250 Dispenser.
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Page 10: Servicing The System
CD250 Operators Manual. To lubricate the pneumatic circuit od the CD250, remove the top cabinet cover. On the left front of the machine is a manifold that is feeding air to the pneumatic control circuits in the dispenser. - Page 11 ID of the part. Remove and repalce these two seals with the seals supplied in the seal kit with the CD250. Remove the fluid fittings from the main valve body. Make notes as to the location of the different fittings. Model CD250 Service Manual: Ver1.5...
- Page 12 In the bottom of the main ball valve body you’ll find another O-ring seal and Teflon backup as well as another bushing. Using the seal pick supplied with the CD250 remove the old O-ring and replace it with a new one.
- Page 13 Perform another ratio assurance check. Metering Piston Seal Replacement Remove the lower panels from the CD250 Dispenser. Make sure the dispenser is turned “OFF” and that all regulators are turned down to “ZERO”. To remove the metering assemblies it is important that the metering pistons are pushed completely into their cylinders.
- Page 14 “inlet” fitting at the back of the machine. Position a waste bucket here to catch resin as well. Using the strap wrench supplied with the CD250 Dispenser, remove the catalyst metering assemblies. Material will drain from the hoses feeding the metering cylinder manifolds. This is expected and rags or towels should be on hand for clean up.
- Page 15 Do not over-tighten! When the metering assembly bottoms out in the base manifold you will feel a definite stop. Do not try to tighten beyond the firm stop. The lower access panels can now be replaced. Model CD250 Service Manual: Ver1.5...
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Page 16: Troubleshooting
Insufficient material pressure to press the pads firmly against the sensor ports. Main air cylinder fails to return following a complete dispense stroke Defective rapid exhaust valve. Unit switches before metering piston is fully extended. Bleed holes in end cap plugged. Remove foreign material. Model CD250 Service Manual: Ver1.5... - Page 17 “PARK” position. Defective “OR” valve. If you cannot correct the problem, contact Lily Corporation with an exact description of how the various components are responding. If possible, phone with the unit, air, tools, and resin information at hand.
- Page 18 Parts Diagrams Model CD250 Service Manual: Ver1.5...
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- Page 20 Parts Diagrams Model CD250 Service Manual: Ver1.5...
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- Page 24 Parts Diagrams Model CD250 Service Manual: Ver1.5...
- Page 25 Parts Diagrams Model CD250 Service Manual: Ver1.5...
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