TDI T
URBO
T
WIN
FROM
TECH DEVELOPMENT
Publication T30-906
Page 5
Issued January 8, 2016
6.0 OPERATOR’S TROUBLESHOOTING GUIDE
TROUBLE
PROBABLE CAUSE
SOLUTION
1. Air always flow through
exhaust
A. Relay valve improperly
installed.
A. Check typical installation
diagram and correct
B. Relay valve not sealing
properly.
B. Check for damaged sealing
ring, replace relay valve or
damaged parts.
C. Control valve not sealing,
pressure remains in APP port of
relay valve.
C. Check control valve and replace
if necessary.
2. Motor does not run, small air
flow from turbine exhaust.
A. Nozzle blockage.
A. Remove blockage or obstruction
from nozzles.
3. Motor does not run. Normal
air flow from exhaust.
A. Excessive bends in the
supply line.
A. Shorten length or straighten
supply air line.
4. Motor runs but pump rotates
slowly or not at all.
A. Air pressure too low
A. Increase air pressure to 40 -150
psig.
B. Excessive back pressure.
B. Increase inlet pressure or
reduce back pressure.
E. Nozzle blocked or damaged.
D. Remove blockage or replace
damaged parts.
5. Motor continues to operate
after start button is released.
A. Control valve is not sealing
correctly.
A. See 1C. above
B. Relay valve is not sealing
correctly.
B. See 1B. above
6. Air tank pressure decays after
extended shut down.
A. Air connections are too tight.
A. Tighten loose fittings. Repair or
replace damaged fittings.
B. Damaged air lines: crushed,
frayed, kinked.
B. Replace damaged lines.
C. Relay valve is not sealing
correctly.
C. See 1B. above
D. Control valve is stuck open.
D. See 1C. above
