Vertical Express I-2 - Page 28

Reference Material I-2 / I-3 Valve
26 ©Vertical Express
Troubleshooting Flowcharts
(continued)
Flowchart 4
A
Record amount car has
settled (Y).
Is Y more than 25
times X?
No
Arrange for homing to
lowest floor.
Verify proper performance.
Close down start record car
location.
After 15 minutes, record car
location.
Record amount car has
settled (Z).
Is Z less than X?
No
Remove and examine
lowering piston.
No
Is the piston seat
damaged?
No
Remove and
examine check
piston.
No
Is piston seat
damaged?
Replace down pilot body.
Adjust down functions.
Reseat piston.
Verify proper performance.
Reseat piston.
Verify proper performance.
No
Replace valve.
Adjust job.
Yes
Yes
Yes
Yes