Add: No. 1201, E-commerce Building, Qingzhou City,
Shandong
Province,
China,
262500
Tel/Fax:
+86-536-3027478
山东省青州市开发区电商大厦
1201
号
Email:
Http://
www.sdbeyondpetro.com
c) Oil line broken.
d)Loose contact between joint
and oil line .
e) Relief valve stuck.
f) V belt too loose to work for
pump.
3.Large brake band too loose.
c) Replace oil line.
d) Tighten up joint.
e) Olean relief valve.
f) Jack up oil tank to tighten belt.
3. Adjust large brake band to
proper condition.
Hydraulic
system normal
but tongs not
rotate
Motor damaged
Repair the motor.
Motor
or
pump
overheated
1.Too
long
for
service
continuously.
2.Viscosity of oil too high or
too low.
3.Reservoir oil level too low.
1.Stop to cool until normal.
2.Replace with proper viscosity
oil.
3.Stop to fill with oil if enough.
9. Some Explanations
9.1 The tongs have four sizes jaws for different size of pipe, they are 8", 51/2",
41/2-5" and 31/2"to respectively five kinds of rollers, they are
φ
80,
φ
90,
φ
100,
φ
110 and
φ
120 mm. When the 4"~51/2" jaw is used for 5" pipe, it is matched with
φ
100 roller, and for 41/2" pipe with
φ
110 roller. Each size is marked on the jaw
itself and there are four pieces for each size of jaw.
9.2 The tongs has five of plug screw sizes for different size of drill string. Each
size has a mark on itself. Don' t confuse with them in application.
9.3 If dies of the tongs are not so many. They can be substituted with the dies
of the Manual Tongs, but only on occasion that the drill string is fitted with rock bit
during a trip. If the string is in combination with a scrapping bit, the slot to fixed die
on jaw will be damaged.
9.4 The torque of breaking out is high, so it cannot be used without the door,
otherwise, it will cause deformation of the case body, resulting discard on the tongs.
9.5 Max. Pressure of hydraulic system should be below 16. 6 MPa, the
