MODEL XQ140/20 HYDRAULIC POWER TONG OPERATION MANUAL
YANCHENG TEDA DRILLING & PRODUCTION EQUIPMENT CO.,LTD
4.6Running-in Operation
□
Supply hydraulic power tong with oil.
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Control the lifting bucket; adjust the height of power tong.
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Keep free-load running at low gear for 1 to 2 minutes.
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Keep free-load running at high gear for 1 to 2 minutes.
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Test tong head running in clockwise and counter-clockwise directions, watch
whether master tong and backup tong being synchronous or not. Adjust the
direction of reset knob if they are not synchronous. (see Fig.28)
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Open the safety door, deliver tong to the well head, and watch whether the space
between master tongs and backup tong suitable or not. Adjust the space between
them if not suitable. The adjusting procedure is shown at 5.5
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Try to clamp the pipe string at high gear, adjust system oil supply pressure by
adjusting the overflow valve in the hydraulic system according to the table of the
making-up torque value, shifts, torque and pressure parameter (See Fig. 6)
recommended by API.
Note:
Being synchronous means both the master tong dies and the backup tong
dies and the backup tong dies stretch out when operating the hand control valve in one
direction. When operating hand control valve in the opposite direction, the jaw plate
frame of the master tong and the opening gear face the opening of master tong, the jaw
plate frame of the backup tong and the main body of backup tong, too. The reason for
being non-synchronous are: 1.the wrong direction of the reset knob; 2.wrong
connection of the hoses of the backup tong is sure to slip, see 5.3.2 for the right
connection method.
Don
’
t disassemble hydraulic pipe at high pressure, otherwise,
accidents may occur and the equipment may be damaged.
Don
’
t approach the running part of hydraulic power tong by your
body or clothes.
Only operators are allowed to approach hydraulic tong to avoid
any trouble caused by turning the operating lever.
The hand control valve may be slightly operated to realize gear
shifting at low gear to avoid damaging the gear.
