PIPE RACK OPERATION

6. Rotate the pulldown force rheostat in the pulldown direction to lower the rotary/pulldown unit. The farther the rheostat is turned to the left the faster the unit will be lowered.

7. When the hoist/pulldown operations are complete, set the hoist/pulldown speed rheostat to the OFF position and then turn the hoist brake switch to the SET position.

CAUTION: Whenever the hoist/pulldown speed rheostat is in the OFF position, the hoist brake switch must be in the SET position to prevent the rotary/pulldown unit from creeping downward due to the weight of the unit.

AUXILIARY WINCH OPERATION

To operate the auxiliary winch proceed as follows:

1. Place the operation mode selector switch in the MAST/WINCH position.

2. To hoist the auxiliary winch line, lift and move the winch joystick, located on the right console, forward. To stop the line, return the joystick to the NEUTRAL position.

3. To lower the winch line, lift and move the joystick rearward. To stop the line, return the joystick to the NEUTRAL position.

PIPE RACK OPERATION

The machine can be equipped with 1 to 4 pipe racks and depending upon the number of pipe racks the pipe rack configuration and operation will be different.

On a machines with one pipe rack, the rack will be on a swing out arm and will be in #1 position .

On a machine with two pipe racks, the racks will be on swing out arms and will be in #1 and #4 positions.

On a machine with three pipe racks, two pipe racks will be located on a carousel that swings out and then is rotated. This carousel houses pipe racks in #1 and #2 positions as shown. The third pipe rack is a swing out rack that will be in #4 position.

On a machine with four pipe racks, there are two swing out carousels with two racks in each carousel. The carousels rotate to make each rack available for use. The left carousel houses racks #1 and #2 and the right carousel racks #3 and #4.

The general method of operating the pipe racks is as follows:

1. Place the operating mode selector switch in the DRILL position. The main air compressor must be energized.

2. Verify that the operating mode selector switch is in the DRILL position and that the hoist/ pulldown speed selector switch is in the PIPE RACK/JOINT position.

3. Select the desired pipe rack.

4. Lift and move the pipe rack joystick, located on the left console, out of neutral to perform the desired operation.

PIPE RACK OPERATION

The following special sequence is required for each pipe rack configuration.

1. One pipe rack configuration.

a. Turn the pipe rack selector switch to the #1 position.

b. Operate the rack as described under general procedure.

2. Two pipe rack configuration.

a. If the first pipe rack is to be operated place the selector switch #1 position and operate the rack as described under general procedure.

b. If the second pipe rack is to be operated place the selector switch in the #4 position and operate the rack as described under general procedure.

NOTE: Take extra care to insure that one pipe rack is out of the way and locked in place before operating the second pipe rack.

3. Three pipe rack configuration.

a. The first and second pipe racks are part of a carousel and require a special operating sequence. The third pipe rack is a standard swing out rack.

To operate the third pipe rack place the selector switch in the #4 position and operate the rack as described under general procedure.

b. The carousel configuration of pipe racks one and two requires a special sequence.

Position #1 of the selector switch will allow, when the joystick is pulled to the rear, the carousel with pipe racks to be swung out over the guide bushing hole.

One of the pipe racks will be over the hole. Position #2 of the selector switch will allow, when the joystick is pulled to the rear or pushed forward, the carousel to rotate to move the other pipe rack over the hole. Returning the selector switch to position #1 and moving the joystick forward will return the carousel to the stored position.

c. Because of the sequence of operation pipes must be removed from pipe rack #1 first and then pipe rack #2. When returning the pipes to the racks return pipe to #2 pipe rack, then #1 pipe rack.

NOTE: Take care to insure that one pipe rack is out of the way and locked in place before operating the other pipe rack.