Blohm + Voss Oil Tools FloorHand 9GF-1102, Technical Documentation Manual

Page: 44 / 105

44
OP
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AT
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S
44
OP
ER
AT
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S
Spinner
Slips
Stalls
Problem: Upper wrench slips when making or breaking
connection.
No
No
No
No
No
Is there 2,500 psi system
pressure present?
If coming out of the hole, ensure that
the connection is completely broke and
that there is no weight in the elevator.
If going in the hole, ensure
that the driller has pipe aligned
vertical (not cross thread).
Ensure that there is not weight
in the elevator, or that the top
drive is neutral.
Is 2,500 psi present on
system pressure gauge?
See Troubleshooting HPU.
Does problem
persist?
Contact Blohm + Voss
Personnel.
Replace spinner clamp
cylinder. Does the problem
persist?
Clean or replace the spinner
Pilot Operated Check Valve.
Install test gauge on the spinner
clamp, test port, and then clamp
on loose pipe.
Observe the gauge and
run the spinner. Does clamp
pressure fall while running spinner
motors?
Bleed Air & Continue
Operation.
Yes
Yes Yes
Yes
Yes Yes
Yes
START