Snorkel TB126J CE - Manual (Page 34)

Chapter 7 – Prestart Inspection
30 TB126J – 0192117EE
Use the following procedure to test and inspect the
EMS.
1. Turn on the ignition and start the engine.
2. From the lower controls, fully extend the boom hori-
zontally. Ensure that no more than 5 to 8 cm (2-3′′)
of black and yellow striped tape is showing at the
end of the hose carrier. (Refer to Figure 7.15) If more
or less tape is showing, remove the machine from
service and contact a Snorkel authorized service
provider.
Figure 7.15 – Hose Carrier and Main Boom
3. Fully raise the boom.
4. Check the lower controls for a flashing green light
and check the EMS display for any error messages.
Fully lower and retract the boom. In the event of a
flashing green light or EMS error messages, remove
the machine from service and contact a Snorkel
authorized service provider.
5. From the upper controls attempt to raise and extend
the boom without depressing the foot switch. The
boom should not move and the EMS will error out
in 10 to 15 seconds. If the boom moves, or the EMS
does not error out, remove the machine from service
and contact a Snorkel authorized service provider.
6. From the lower controls, extend the boom approxi-
mately 2 m (6′) and raise the boom to approximately
30 degrees.
7. Open the manual bleed down valve. The EMS will
error out for primary and backup length and angle
sensors. If the EMS does not error out, remove the
machine from service and contact a Snorkel autho-
rized service provider.
Emergency Stop
Push the emergency stop button in to turn off the engine.
The lower control functions should not operate with the
emergency stop in this position.
Emergency Power
Place the battery disconnect switch, the emergency stop
button, and the master switch in the on position.
Hold the engine/emergency power switch down and the
ground operation switch upward to operate the aerial
platform from the lower controls using the emergency
power system.
Envelope Management System
Inspect and test the EMS sensors for wear, physical
damage and proper operation (refer to Figure 7.14).
Figure 7.14 – EMS Sensors
EMS Length
Sensors
Length Sensor
Cables
Primary Secondary
EMS Angle Sensor
Connector
EMS Angle
Sensors
Primary
Secondary
Extend Cut-out Switch