TDI TURBO
TWIN
FROM
TECH DEVELOPMENT
Page 4
Publication T1-932
Issued May 20, 2016
3.3 EXHAUST PIPING
The turbine exhaust may be plumbed away from the
starter area. All starters using natural gas must be piped
according to industry codes and local regulations.
The performance of a turbine starter will be decreased
because of back pressure when smaller than
recommended exhaust piping is installed. If back
pressure hampers starter performance, compensation
can be made by increasing the supply pressure. Consult
your TDI distributor for advice.
Exhaust piping should be routed downward to help
prevent any accumulation of condensation in the starter
motor.
If the overhung section of the starter is not otherwise
supported, TDI recommends that the exhaust piping be
supported with a suitable bracket(s).
3.4 SOFT START VALVE & FILTER FITTING
The soft starter fitting P/N: 2-28243 and filter P/N: 2-
28270 originally provided with the model T100-VE air
starters are no longer required. The two fittings will not
be supplied in the red envelope attached to the starter
flange or installed on starters with the relay valve
integrated into the package.
The air starter packages using hard piping now utilize a
flow-thru adapter fitting P/N: 3-30560 installed directly in
the relay valve “APP” port and in the starter “IN” port to
replace the soft start and filter fittings. The flow-thru
adapter fitting is configured with a large internal cavity;
therefore, no cleaning or maintenance of this part is
required.
Note that installations using flexible tubing can pipe
directly to the relay valve “APP” port and starter “IN” port
without the use of the flow-thru adapter fitting.
See service bulletin # 108 for additional information
regarding obsoleting of the soft start P/N: 2-28243 and
filter fitting P/N: 2-28270.
CAUTION
For maximum pinion life and full warranty coverage,
the soft start valve (P/N: 2-28243) MUST be
installed in the applied pressure port (APP) of the
relay valve.
3.5 NATURAL GAS INSTALLATION
The installation of the starter using natural gas is similar
to the air installation except all fittings, piping, valves and
regulators must be compatible with natural gas.
Proper control of natural gas is a major consideration
when used in the starter system.
All starters using
natural gas must pipe the exhaust according to industry
codes and local regulations.
There is a natural gas vent port in the turbine housing
that is plugged for compressed air use. This vent is used
to remove any natural gas that could leak past the
primary turbine shaft seal. Remove this 3/8"NPT plug
and install a line to carry gas away from the starter area.
WARNING
Do not connect the turbine housing vent line to the
turbine exhaust line. Exhaust gas can pressurize the
turbine housing.
3.6 PIPING SYSTEM
Only type approved metallic hose assemblies are
approved in permanently pressurized compressed air
lines of starters. Non-metallic hose assemblies are
allowed only in case the piping system will be emptied
after the starting procedure.
Pipe unions must be type approved by GL. Downstream
of the pressure regulator a pressure relief valve should
be provided.
3.7 ATEX APPLICATIONS
This ATEX designation applies to the use of the starter
on reciprocating internal combustion engines only. For
use in other applications please consult Tech
Development.
NOTE
T100-VE starters conforming to ATEX requirements will
be equipped with a copper beryllium (non-sparking)
pinion.
WARNING
Non-compliance with any of these special conditions
could result in ignition of potentially explosive
atmospheres.
