EN D 031 Rev D
Page 14 of 17
Troubleshooting
When problems cannot be solved, contact an authorized BVM repair facility.
Prior to troubleshooting a problematic spider, perform check based on PCAL-rule:
P
Check available
P
ressure after the filter fitted before the hook up manifold is 90-120 psi.
C
Check that all hoses and quick disconnects are properly
C
onnected.
A
Check if there is
A
ir leakage at manifold block, operation panel, quick disconnects, or hoses.
L
Check
L
ubrication status of tool.
Overview possible problems:
Problem
Possible Cause
Possible Solution
Slips do not operate
or operate slowly in
both directions.
Air pressure supply too low.
Check air pressure at regulator. Adjust as
necessary.
Airline kinked or leaking.
Straighten or replace.
Incorrect oil/grease used
Use appropriate viscosity/grade oil/grease
Control valve faulty*.
Replace.
Defective cylinder seal.
Replace.
Tubing slides thru set
slips or tubing is
damaged.
Incorrect slip segments or
inserts mixed with correct slip
segments or insert.
Install correct slip segments or inserts.
Inserts are dirty
Clean inserts
Inserts are loose
Replace slip body assembly
Worn or re-sharpened inserts.
Replace with new inserts.
Spider lift arms
contact the spider
body when the tubing
is engaged
Parts worn
If the slip assembly extends below the
bottom of the bowl, replace the slips. If
new slips still extend below bowl, the
spider base needs to be replaced
Linkage assembly
loose or does not
function properly
Bushings are worn
Replace bushings
Cranks are worn
Replace Crank assembly
Cylinder is loose
Replace cylinder or cylinder bolts
*Air escaping from the control valve does not necessarily mean that the control valve is faulty.
If there is a defective cylinder O-ring seal, the air leaking through the cylinders will be released
back through the control valve. If control valve leakage is suspected, remove valve from unit
and test. If valve is not leaking, inspect cylinder assemblies for defective seals. Consider
replacing cylinder or returning to BVM for redress.
