Assessments - 2, GPA: 3.5 ( )

Fabricante : Milwaukee Arquivo Tamanho: 2.96 mb Arquivo Nome : Língua de Ensino:

The spindle must be smooth without grooves or pitting. If the spindle is not in good condition, it is possible for the threaded spindle sleeve and the internal spindle to weld together and seize during coring (see "Lubricating the Spindle for Dymodrills with a Shear Pin" in the "Maintenance" section for spindle lubricating instructions). Cat. Nos. 4004, 4005, 4092, 4096 and 4097 feature a friction clutch rather than a shear pin to protect the motor and gears. If the motor overloads, the clutch will begin to slip and the bit will stop rotating. The clutch is factory-set and does not require adjustment. Nuisance (frequent) clutch slippage should be addressed by an authorized MILWAUKEE service center. Water Shut-Off Valve Fig. 18 Gear Shift Lever To reduce the risk of injury, always check the work area for hidden wires before coring. Coring Procedure (Fig. 18) 1. Select and install a bit following guidelines in "Selecting and Installing a Core Bit". 2. Secure the rig to the work surface using one of the methods described in "Methods for Securing Equipment to Work Surface". 3. With the motor OFF, adjust the gear to either high or low speed according to the guidelines in "Selecting Speeds". NOTE: DO NOT SHIFT SPEEDS WHEN THE DYMODRILL MOTOR IS ON. To adjust the speed on all Dymodrills, move the gear shift lever to the desired setting. WARNING! page 10 4. Connect the water hose to the Dymodrill water shut-off valve and to Retrieving Cores and Deep Coring the water supply. Make sure the seal is watertight. Use a standard garden hose if you require additional length. Set up a water collection system. 5. If you are using a vacuum system, read the instructions for specific setup in "Assembling & Using a Vacuum System". Do not continue the following steps until the vacuum gauge reads at least 20 inches of mercury vacuum. Never operate the Dymodrill if the gauge reads less than 20 inches (see "Mothods for Securing Equipment to Work Surface"). Always monitor the vacuum gauge during coring. If water collects in the vacuum pump filter jar, empty it to prevent damage to the pump. To reduce the risk of injury, do not operate the Dymorig if the gauge reads less than 20 inches of mercury vacuum. WARNING! 6. Turn the Dymodrill motor ON. Turn the water on so it flows freely through the water shut-off valve (see "Supply an Adequate Water Flow"). Turn the valve clockwise to increase water flow and counterclockwise to decrease water flow. 7. While holding the handle, slightly loosen the cradle lock handle and slowly rotate the handle to lower the bit into the workpiece, applying steady, even pressure. To help reduce bit wandering, always use a light load to start the hole and wait for the tip of the bit to penetrate the work surface completely before increasing the load. 8. Use sufficient pressure so the bit cuts constantly. Use the ammeter on the meter box as a guide for proper pressure....

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