Westco 16-25, Руководство по эксплуатации продукта, Страница: 14 / 49

Section 3 Page 1
Operational Checkout
Before starting a new job, perform the following operations and be sure the tong
operates correctly.
Place the reversing pin in the hole on the rotary next to "make."
NOTE: For tandem motor tongs, also place the motor selector valve in high speed mode.
Move the shifting lever to the high-speed position (up). Push the throttle handle
Forward and verify that the jaws bite and the rotary turns at high speed.
NOTE: Rotary should move 6 inches (152.4 mm) before jaws grip the pipe and torque
builds up. If torque is applied before the rotary plunger (Figure 4-1) is out of the
pocket, rotary lockup and subsequent case damage may occur.
Pull the throttle handle to neutral and move the shifting lever to the low-speed position
(down). Again push the throttle handle and verify that the jaws bite and the rotary
turns at low speed.
Return the throttle handle to neutral position.
Use the throttle handle to operate the tong so that the rotary gear is aligned with
the doors.
Place the reversing pin in the hole on the rotary next to "break." Repeat the
checkout procedure to check breakout operation.
If the lift cylinder is installed, pull the lift cylinder control lever back and verify
that the cylinder operates to lift the tong. Then push the lift cylinder control lever
forward and verify that the cylinder operates to lower the tong.