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Model 298 Operation Guide

Pneumatic Controls Installation ƒ Mounting: Mounting holes are located in the mounting bracket, and the use of 5/16-18 socket head cap screws with lock washers is required. The Model 298 markers require a sturdy, level platform for mounting. For optimum power, the marker should be mounted so that the stamp face is 2 1/8” to 2 3/8” away from the part to be marked for a 2 ½” stroke model. (2.125” to 3.875 for a 4” stroke model, ect). ƒ Electrical Sequence for Double Solenoid Valve: ƒ Air Requirements: Model 298 is air powered for both the forward and reverse stroke. CMT recommends a 1/2” minimum shop airline. Maximum operating pressure of 100 psi, minimum operating pressure of 20 psi. Please note that the airline length between the valve and marker should not exceed 3’. The marker has two ½” NPT air ports. To advance marker, energize solenoid “A”. To return marker and reset, de-energize solenoid “A” and energize solenoid “B”. ƒ Electrical Sequence for Spring Return Valve: To advance marker, energize solenoid “A”. To return marker and reset, de-energize solenoid “A” after part is marked. ƒ Adjustments: ƒ Speed Control Adjustment: Adjust speed control “R” to control speed of retract motion. DO NOT install speed control on forward (rod) port of marker. ƒ Note: For most efficient operation, electrical signal energizing solenoid “A” should be very short, approximately .06 to .10 seconds. Suggested Pneumatic Control Diagram To regulate marking pressure, adjust FRL (Filter/Regulator/Lubricator unit). Sold separately. Increase air pressure to mark deeper. Decrease air pressure to mark lighter. Maintenance

Double Acting Air Impact Marker Model 298 Operation Guide and Parts List - 18322 Removal of front cap voids warranty.

Marker Sol “A” Shut off all air and electrical power prior to performing any and all maintenance. ƒ Lubrication:
Standard 4-Way Valve1/2” Shop AirFRL Combo Unit Sol “B”“R” 1/2” Tube 1/2” Tube Add 10W “light” industrial hydraulic oil to lubricator bowl and adjust oil flow to approximately 1 drop for every 30-50 cycles. The Model 298XX-XX-XX-X-NL is a non-lube system and does not require any lubrication. ƒ Air Filter: Check and clean/change as required. The frequency of cleaning/changing is dependent on environment and plant air system. Do not allow excess water to fill filter bowl.