T-IM114b P27/62
T20
Series
OPERATION TABLE
5.3.2 Powered motions
WARNING
Always ensure that the patient is secure or
adequately supported during all tabletop
adjustments and that such adjustments do not
compromise table stability.
If a patient is on the table and the handset is
clipped onto the tabletop, take care that the
handset buttons are not inadvertently activated
(e.g. by a patient Transporter or person) causing
unwanted table movements.
Similarly take care at all times to ensure that the
handset is not inadvertently activated.
During all tabletop adjustments be aware of
pinch points between the moving and static
parts (e.g. the break hinge and head and leg
hinges).
Ensure that all theatre drapes, electrical cords
and any medical tubing etc. are clear from
entrapment in pinch points and that adequate
excess drape, cord, or tube, are available to cater
for the adjustment required.
Ensure that any motion and adjustment
selected will not cause any part of the table to
hit or collide with any person or object.
Examples being:-
i) Leg section hitting floor when table is
low and reverse Trendelenburg selected.
ii) A fully lowered leg section hitting table
base when tabletop is lowered.
iii) Head section hitting anaesthetist’s seat
when Trendelenburg selected.
CAUTION
Do not exceed the duty cycle for any motor
drive as detailed in section 9.5.5.
5.3.2.1 General
The major tabletop adjustments and motions are powered.
These powered motions are controlled by a corded handset
supplied with the table (see 5.3.3) and the standby control
panel (item 12, Fig. 2.2 see section 5.3.4). An optional
infrared handset or an optional footswitch (see accessory
list section 7.0) can also be used to control the tabletop.
The use of these accessories is explained in the leaflet
provided with them.
Powered tabletop motions are, Trendelenburg, height, tilt,
brake, traverse, flexion and return to level. Each motion in
either direction is controlled by pressing and holding the
appropriate handset, footswitch or standby control panel
button. The table must be switched ‘on’ for powered
motions to operate. Section 5.3.3.2 details handset button
functions, section 5.3.4 provides standby control panel
information.
All signals from controllers will be treated in a strict priority
order to avoid multiple activation errors from different
controllers. Inputs will be responded to in the sequence
below:
1 Standby control panel
2 Corded handset
3 Infrared handset
4 Footswitch control.
Button presses from a controller lower on this list will be
ignored if any button is pressed on a controller higher on
the list and the input from the higher controller will be
actioned.
The table cannot be powered by footswitch, or either
handset, when the main battery ‘critically low’ indication is
displayed (see Fig. 10, main battery LED is ‘red’) unless
the standby battery switch (item 1, Fig. 2.2 for T20-a and
T20-s tables, or item 1, Fig. 2.3 for the T20-m table) is
held depressed. However the tabletop can be controlled
by the standby control panel (item 12, Fig. 2.2) situated on
the side of the column. This standby control panel has
limited functionality in comparison to either handset and
should ONLY be used in an emergency (e.g. handset or
footswitch failure, control system failure, or ‘critically low’
battery).
Use of this standby control panel in any situation other
than an emergency SHOULD be avoided as certain safety
devices are overridden. The controls and buttons of the
standby control panel are detailed in section 5.3.4. In the
unlikely event of insufficient battery power when using the
standby control panel, press and hold the standby battery
switch (item 1, Fig. 2.2 for T20-a and T20-s tables, or item
1, Fig. 2.3 for the T20-m table) whilst conducting powered
motions.
In the unlikely event of failure of the main table batteries,
‘press and hold’ the standby battery switch (item 1, Fig. 2.2
or 2.3) in the ‘on’ position and use the corded or infrared
handset or the standby control panel to control the table.
This enables the standby batteries to power the table,
however the main battery fault should be rectified as soon
as possible.