Dynatup 8250, Operating Instructions Manual

Page: 32 / 64

Initial Machine Operation and Checkout M14-13655-EN
3-10
Initial Machine Operation and Checkout
Once the complete stop block stacks are properly installed and the tup and 5.5 lb (2.5 kg)
weights are mounted on the crosshead, test the operation of the Model 8250.
To Test Manual Operation in the Gravity Mode
To test manual operation in gravity mode:
(a) Position the switches on the control pendent to the following settings:
MAN
GRAV
PNEUMATIC CLAMP ON (if the pneumatic clamp is installed)
(b) Close the safety enclosure doors.
(c) Using the UP and DOWN buttons on the pendent, raise and lower the latch assembly.
(d) If the crosshead is not attached to the latch, press the ARM and FIRE buttons until
the latch hook opens. Then lower the latch until the crosshead is engaged by the
hook.
(e) Raise and lower the latch/crosshead. Verify that the crosshead and tup cannot touch
the specimen support fixtures. Also check that the stop blocks are the same height.
(f) Raise the latch/crosshead to the top position.
(g) Press the ARM button. Then without releasing the ARM button, press the FIRE
button until the hook opens and the crosshead is released. If a pneumatic clamp is
installed, the clamp should operate when the ARM button is pressed.
(h) Repeat the procedure several times and check that the crosshead hand knobs are tight.
To Test Automatic Operation in the Gravity Mode
To test automatic operation in gravity mode:
(a) Position the switches on the controller pendent to the following settings:
AUTO
Grav
Pneumatic clamp ON (if Pneumatic Clamp is installed)
(b) Close the safety enclosure doors. The hoist will raise the crosshead to the position of
the magnet on the height scale.