2 OPERATION
Read and un der stand the Owner’s Man ual be fore op er at ing this
ma chine. Fail ure to fol low the safety in struc tions could re sult in se ri ous in jury or death.
Limit travel speed. Ground conditions, congestion, slope, location of
personnel and other factors increase risk of collision or injury to personnel.
To prevent serious injury, all riders must ride in a passenger seat with
the safety belt fastened.
Always approach turns slowly and carefully. When approaching blind
corners or steering around obstructions, reduce speed and proceed cautiously.
Be extremely alert during hazardous operating conditions. Operating
conditions can change as work progresses and as weather changes.
2.1 PRE-OPERATION
All controls are in the truck cab and are clearly marked. The following procedures are
recommended for operating the unit. First become familiar with the controls and
switches described in Section 1 of this chapter. No instructions are given for operation
of the basic truck because this is covered in the owner's handbook supplied by the
truck manufacturer (Ford).
All electrical switches for operating the stair are on the truck dash as shown in Figure 1
and are discussed below. A window installed in the cab roof allows overhead viewing of
the stair.
MASTER SWITCH
- controls power to all electrical control circuits;
specifically, the hydraulic pump magnetic clutch, the A-Frame Release, Stair
Release, Stair Lights, A-Frame Up/Down, Stair Extend/Retract and Stabilizers
Up/Down. Placing the master switch to "OFF" removes power from the stair and
A-Frame release solenoids, preventing the corresponding lock levers from being
energized to the unlocked condition. With master switch Off, the stair and
A-frame remain locked by lock levers and will not lower or retract even if the Stair
Retract or A-Frame Down switches are actuated.
NOTE:
Turn the MASTER SWITCH “on” to enable lock lever (pawl) circuit and stair
lighting when required.
CHAPTER 1 GENERAL INFORMATION & OPERATION INSTRUCTIONS
JANUARY 31, 2014
2 OPERATION
PAGE 1
Truck Mounted Passenger Stair TMPS-200
Manual No. 307559
1
