DIGISPENSE 3020 CONTROLLER MODULE
Page 3-114
7 April, 2011
IVEK Corp.
P03L011B
Table 3.4 Common Operational Problems And Solutions - Cont.
PROBLEM
PROBABLE CAUSE
POSSIBLE SOLUTION
AC line briefly disconnected. Make sure AC line cable is securely fastened to
back of unit and to wall outlet.
A brownout condition oc-
Make sure AC power to unit is available.
curred on the AC line.
EMI or ESD event.
Make sure unit is grounded to earth through AC line
and enclosure cover is on the unit. Keep unit and
cable away from high EMI producing equipment and
cables
Screen blank upon power-up
Contrast set too low.
Upon power-up, unit will be in Power-up screen.
Press FPB4 to enter Contrast Adjust screen and
then press Up Arrow until contrast is acceptable.
Screen dark upon power-up
Contrast set too high.
Upon power-up, unit will be in Power-up screen.
Press FPB4 to enter Contrast Adjust screen and
then press Down Arrow until contrast is acceptable.
No fluid movement.
Pump 90 Degree Offset
Make sure pump orientation matches this setting.
doesn't match pump orienta-
tion.
Port Home Fault
Fluid viscosity too high for
Reduce valving speed.
valving speed causing a stall
during valving
Piston jammed against end
Initiate Piston Move. WARNING: may break piston
of chamber.
if piston is actually seized, it is advisable to remove
the pump before initiating a Piston Move.
Piston seized.
Refer to Chapter 7.
Faulty cable connection.
Check the cable connection. Inspect and repair
faulty cable.
Piston Home Fault
Fluid viscosity too high for
Decrease Dispense Rate, Load Rate, or Accelera-
rate of piston movement.
tion settings.
Fluid viscosity too high for
Increase Torque setting.
torque setting.
Tubing too small for rate of
Increase tubing diameter.
fluid movement.
Piston seized.
Refer to Chapter 7.
Faulty cable connection.
Check the cable connection. Inspect and repair
faulty cable.
