PIAB C 1200 Series, Troubleshooting Manual

Page: 48 / 60

VACUUM CONVEYORS
48
TROUBLESHOOTING GUIDE: CONTROL UNIT VCC-EP, PART # 34.07.016
Problem Possible Causes Possible Solutions
No air to the control unit
X
·Air is shut off·
X
The 6mm tubing is not connected
X
·Connect the air supply to the pump
(40-100 psi)·
X
Connect the 6mm tubing to the mani-
fold of the pump and the 6mm connec-
tion on the control unit·
X
Turn the compressor ON·
X
Locate the ball valve for the incoming
air supply·
X
Open the ball valve
The conveyor did not cycle
The conveyor does not completely shut
off
X ·The color-coded tubing are not connected
correctly·
X The color-coded tubing is not pushed com-
pletely into connectors·
X Inadequate air pressure to the controller (air
supply port)·
X No air signal coming out of port #1 on the
VCC-EP when valve is manually depressed
or fired electronically ·
X The O-ring may be misplaced or cracked in
the compressed air inlet of the pump (Not
valid with L100)·
X Inadequate air pressure for shifting the shut-
tle valve on the pump (Not valid with L100
X ·Follow the color for each function of
the control unit·
X Connect corresponding color tubing
with matching control function port·
X Push the control tubing completely into
control connectors·
X Turn air supply to pump off / Discon-
nect the air supply tubing from the
VCC-EP control. Plug air supply tub-
ing into a pressure gauge, turn air sup-
ply on to the pump and verify air
supply pressure going to the VCC-EP
(40 to 100 psi)·
X Verify air supply to pump and VCC-EP
control unit
X ·Replace O-ring on compressed air
inlet of the pump·
X Check air supply pressure going into
air supply port of VCC-EP (40 to 100
psi)
Conveyor pump runs continuously and
will not shut off
X
·Material obstructing bottom door·
X
Missing or damaged bottom seal
X
·Clear any material that is obstructing
bottom door·
X
Check for the presence of a bottom seal
(clean seal if present)·
X
Replace bottom seal
Pump and VCC-EP are cycling on and
off, but the bottom door will not open all
the way or at all X ·The conveyor may be packed with material
/ preventing the release of vacuum in the
conveyor·
X Bottom door may be sticking to the bottom
seal·
X Signals to and from valves 4 and 5 on VCC-
EP control
X ·Open conveyor and clean out all of the
product·
X Clean bottom seal, removing any mate-
rial stuck to it and any residue left
behind by the material·
X Make sure there is a simultaneous elec-
tronic input to valves 4 and 5 on the
VCC-EP control or the bottom door
will not open