Standard Operation Procedure
16
Problem:
Depositor is depositing erratically or has stopped depositing completely.
Solution:
Due to unclean air, the pneumatic valves can stop functioning correctly. Put one or two
drops of mineral oil in pneumatic valves. If that doesn’t solve the issue, order a new set
of valves through the Hinds-Bock Parts department.
o
Check air supply to verify that the Hinds-Bock equipment is getting clean air.
The system has a pulse valve in line with one of the pneumatic valves. If the supply air is
not completely clean, then the pulse valve can clog and cause the system to deposit
erratically or not at all. If this is the case, remove the pulse valve with a wrench and
connect the blue airlines directly into the pneumatic valve (bypassing the pulse valve). If
this corrects the problem, then replace the pulse valve.
o
Check air supply to verify that the Hinds-Bock equipment is getting clean air.
The depositor requires 80-90psi while it is cycling. If the air pressure drops lower than
55psi, the depositor will not be able to cycle properly. The same issue will occur if there
is a pressure drop greater than 10psi. If the air pressure starts out at 80-90psi and drops
more than 10psi during the cycling process, then the air supply is too low and more CFM
is needed. Check the compressor to determine if it can provide enough pressure and
CFM. If so, make sure that the supply airlines to the depositor are large enough, and
that there isn’t and excess of flexible hose used.
o
Hard piping the air close to the depositor location and then using a short flexible
hose to attach to the depositor will help prevent CFM loss from the flexible hose
expanding and retracting.
