WARNING: THIS PROCEDURE CAN BE DANGEROUS!

The personnel must be aware that the rope can get caught on the valves or fittings around the well head or even get caught around the hands, arms, feet, legs or other parts of the anatomy. If the weight box should fall, the personnel should immediately turn loose of the rope and get away from the unit.

IMPORTANT: The hand brake operates a set of calipers with brake pads on a disk brake attached to the input shaft of the gear reducer. If the operator needs to raise the weight box without the well load attached to the load belt, the adjusting bolt on the brake calipers should be adjusted fairly tight against the disk, so it will have sufficient gripping power to hold the weight box when it is raised.

The EMERGENCY STOP button should also be depressed after the hand brake is set. The Rotaflex Pumping Unit has a positive lock-out system built into the disk brake. Insert the keeper pin through the brake housing and into the holes drilled through the disk to activate this positive lock-out system. This locks the gear reducer and will keep it from turning, but will not prevent the weight box from moving if the load-belt or chain inside the tower should fail.

10.0 MOVING THE UNIT

It is important that the mechanical brake system be in good operating order and adjusted properly before working on the unit.

1. Before disconnecting electrical service from the unit:

a. Drain or vacuum the oil from chain reservoir.

b. Lower the weight box to the bottom of the tower.

c. Remove all the auxiliary counterweight from the weight box.

d. Set the manual brake. Set the emergency stop on the automatic brake.

e. Remove vent plug from gear reducer and replace with solid oil plug.

2. Make sure there are no sub-poles, electrical lines or guy wires that will interfere with the lowering of the tower. When the unit is lying down, the top of the tower is approximately 20 feet longer than the skid.

3. Remove belt guard, belts and prime mover. Remove the sheave and hub from the input shaft of the gear reducer.

4. Make sure both tie-down bolts are properly tightened.

5. Position 50-ton (or larger) crane with 50-foot (or greater) boom height on one side of the unit, near the middle of the 24-foot concrete pad. Position the load hook rigged with the spreader bar above the tower. Attach wireline cables to the spreader bar and to the pad eyes located near the top of the tower (one on each side of the crown hood.) Wireline cables should be only long enough to clear the top of the crown hood.

6. Remove six (6) bolts (three on each side of the tower) that hold the tower beams and skid together.

7. Remove the pins from the lower end of the standing struts and guide shoe. The struts will move towards the rear of the unit as the tower is lowered.

8. NOTICE: The following is the procedure used at the manufacturing facility to lower the units before shipping. The crane operator may recommend a different method or may desire to set his crane in a different location.

a. Place the boom of the crane towards the back of the unit 2 or 3 feet behind the pivot point. Lock the swing brake while holding tension against the load.

b. Lift the load. This should begin the breakover movement of the tower.

c. If the motion is not enough to begin the breakover, ease the unit to the upright position and begin at step A and use more swing. (Swing the boom towards the back of the unit 3 to 4 feet behind the pivot point and lock the swing brake while holding tension against

9. The pivoting point is approximately 7 feet from the front of the unit. The crane should continue tilting the tower towards the rear of the unit, keeping the line above the top of the crown, not allowing it to swing to either side. (This will allow the unit to lie down parallel to, and on top of, the skid.) Breakover point of the Rotaflex Pumping Unit occurs when the lower ends of the struts are about even with the rear of the skid. The crane operator should be aware of this change of load.

10. After the breakover point is reached, continue lowering the tower until the pins can be removed from the top of the struts.

11. Attach the shipping supports in place of the struts. Continue lowering the tower until the shipping supports meet the skid. Attach the shipping supports to the skid with two bolts for each support.

12. Attach four 20-foot wireline cables to the four pad eyes. Two are located near the bottom of the tower and two are located two-thirds of the way up the tower on the front.

13. Attach the load line of the crane to the four wire line cables and hold the line snug while removing the tie-down bolts. Make sure all tie-down bolts are removed as shown in Figure 29.

14. The unit will be heavier at the base end when unit is picked up from the concrete pad. The crane operator should lift the unit straight up until it clears the concrete pad, then set it on the truck.

15. Support the tower near the top end with temporary shipping posts between the truck bed and the tower. Chain the unit to the truck with good quality load chains and load binders, using a “cross tie-down” method as shown in Figure 30.

Figure. 30. Positioning Rotaflex Unit on Truck

11.0 PRODUCT IMPROVEMENT

The manufacturer of Rotaflex pumping unit is constantly improving the design quality of the unit. In many instances, the feedback of the end users provide tremendously benefit to the continuous product refinement effort. The Product Performance Report (PPR) is aimed to gather product performance information from the end users for product improvement. Although it is the policy that all warranty claim must have a PPR number assigned by the manufacturer, all end users are encouraged to submit PPRs to the manufacturer via the customer service.

Customer Service - USA Tel: (432) 334-4575 Fax: (432) 334-4555

A copy of the Product Performance Report is included at the end of this manual. End users is free to make copies for submission via the customer service. When a significant change in design which will affect the maintenance of the Rotaflex units, Field Service Bulletins are issued to all field service personnel so that proper procedures can be followed. Weatherford Artificial Lift Systems is committed to provide the highest quality of oil field equipment to our customers. Provide us feedback to us serve you better.