Metrohm 789 Robotic Sample Processor XL - Manual (Page 85)

3.4 Commands
Metrohm Sample Processor, Operation 77
LIFT
9
LIFT >sample sequence
3 LIFT: 1: rest mm
1,2,∗
work,
rinse, shift,
special, rest,
0…235 mm
Lift positioning
1 st parameter: tower
2 nd parameter: position
Raises or lowers one or both (∗) lifts to a defined position.
Examples:
LIFT: 1: work
LIFT: 1: rinse
LIFT: 2: shift
LIFT: 2: special
LIFT: *: rest
LIFT: 1: 100 mm
Moves lift at Tower 1 to working position
Moves lift at Tower 1 to rinsing position
Moves lift at Tower 2 to shifting position
Moves lift at Tower 2 to special position
Moves both lifts to uppermost position (0 mm)
Moves lift at Tower 1 to position 100 mm
Working, rinsing, shifting and special positions are defined specifically
for each rack in the configuration menu under >rack definitions (see
p. 61). The rest position is the zero position (0 mm) of the particular lift,
i.e. its upper stop.
The lift speed can be set in the parameter menu under
>sample
changer settings or altered in a sequence with the appropriate DEF
command.
Each lift can be positioned with an accuracy of one millimeter. The
LEARN function is available for this (see p. 112).
3.4.2 Switching components
Pumps and stirrers can be switched as required, either together or
separately. They work independently and can be operated at the same
time as other functions are being carried out.
PUMP
PUMP
4
>sample sequence
4 PUMP 1.1 : 1 s
1.1…2.2 1…999 s,
1.∗,2.∗ ON,OFF
Pump control
1 st parameter: pump selection
2 nd parameter: status or duration
With the PUMP command up to 4 pumps (2 pumps per tower) can be
controlled separately. The first parameter selects the pump.
Syntax: T.P (T=Tower, P=Pump)
With Sample Processor models that have external pump connections
instead of built-in pumps the PUMP command switches the appropri-
ate pump connections (16 V).
The pump built into a tower as Pump 1 is always used for rinsing the ti-
tration head. Pump 2 (if present) can be used for aspirating off the