7
Installation / Operation
Product Manual - APPS 160
Troubleshooting
The Troubleshooting table is arranged in a “Trouble/Possible Cause/Remedy” format. Note that possible causes for specific
symptoms are listed in descending order of significance. That is, check out the first cause listed before proceeding to the next.
If you need further assistance please contact Chart’s Technical Service Team at 1-800-400-4683.
Trouble
Possible Cause
Remedy
Unit overfills.
Pressure gauge not working.
Stuck or bad fill valve.
No flow in the copper phase lines.
Lines are not correctly connected to the
liquid level switch.
Faulty or incorrectly adjusted liquid level
switch.
Remove front panel from electrical
box (
live voltage exists
). Position the
fill switch in the off position. Position
and hold the vent swtich in the manual
position and vent the tank down to zero
psi. If the pressure gauge does not read
zero, replace the gauge.
After performing the above steps there
should be no product flowing into the
APPS unit. If a fill valve is stuck it could
be debris under the seat, faulty valve,
or over-tightened valve bolts. The
bolts should not be tighter than 12 foot
pounds and should be evenly torqued.
If the gasket between the bodies leaks
it needs to be replaced.
Mark the location of the copper phase
lines and remove them from the liquid
level switch. You may need to vent the
APPS during this process. Direct the
lines in a safe direction and hold the
fill switch in the manual position. One
line should have good gas flow and the
other should have good liquid flow. If
either line does not have flow the APPS
will need to be emptied, warmed up and
purged to free the line of moisture.
If both lines flow freely verify they are
connected correctly and not reversed.
Contact Chart Technical Service at
1-800-400-4683 to verify the liquid level
switch is set correctly.
Unit does not fill.
Coil or wiring issue.
Remove front panel from electrical box
(
live voltage exists
). Position both
switches to the off position. Position fill
switch to manual position and verify that
the fill valve opens. Repeat for the vent
valve. If either valve does not open in
the manual position it’s possible there is
a burnt coil or wiring issue.
No unit function.
Bad fuse.
No power.
Remove front panel from electrical box
and check fuse.
Check supply of power to the APPS
unit.
