Night Scan Chief
Revision 1
4-19
4.6 TROUBLESHOOTING MECHANICAL
Table 4-5. Mechanical Troubleshooting
Symptom
Root Issue
Troubleshooting Sequence
Mast sticking
during extension or
retraction
Mast is dirty and/or requires
lubrication.
1) Clean and lubricate mast.
2) If condition continues, mast requires
overhaul.
Mast leaks down
when extended
Air leak in mast or
valve/compressor assembly.
Use a soapy water solution to pinpoint the leak.
If the mast is leaking, it will require new seals.
If the valve or compressor assembly is leaking
at a fitting, remove the fitting, clean and reinstall
using thread tape or sealant. Replace a faulty
valve or compressor.
Erratic or noisy
when raising to 90
degrees
Bent or worn actuator or pivot
shaft
Replace damaged component
RCP continually
pans or tilts
Bent flag in RCP
1) Remove RCP cover straighten or replace
flag.
2) Make sure wiring is not wound tight. Reset
home position
Pan or tilt motor will
not respond with no
errors displayed on
Remote Control(s)
Broken or loose motor wire lead
or faulty motor
1) Reconnect wire lead
2) Replace
motor.
Mast fails to fully
nest in saddle and
disconnects power
Binding of actuator, software
fault or control erroneously
sensed an increase in current
1) Check that base board has software
version 2.6 or later. See section 0 for
verifying revision. Contact Will-Burt if
update is required.
2) See
Table 4-1, Table 4-2 and Table 4-3 for
software fault codes.
3) Check actuator for binding. Replace
actuator if binding.
Mast will not begin
to lower from 90
°
position
Mast tube sections do not fully
collapse
1) Extend and retract mast.
2) Check tube sections for damage.
3) Internal coil cord may be binding, contact
Will-Burt.
Mast will not begin
to lower from 90
°
position
Magnetic switch band clamped
to mast is not made
1) Magnetic switch is may be out of
adjustment. Loosen clamp and slide switch
up and down the mast until contact is
established.
2) Check
wiring
3) Replace defective magnetic switch.
