Masterflex
Portable Sampling Drive Operating Manual
3-2
Controls and
Functions
(Continue)
Section 3
Operation
A. EXTERNAL POWER INPUT
2.5 mm coaxial receptacle for supplying DC power to the drive for charging of
the internal battery or running the drive from a power source other than the
internal battery. Th
e center pin is positive (+), the sleeve is negative (−).
B. POWER SOURCE SELECTION SWITCH
Selects whether the operator will use the internal
BATTERY
or an
EXTERNAL
power source to power the drive mechanism.
C. MODE OF OPERATION SELECTION SWITCH
Selects whether the operator will RUN the pump or CHARGE the battery.
Note:
Th
e battery cannot be charged while the pump is running. You can select
either but not both. When placed in the
CHARGE
position, all other functions
are disabled.
D. CHARGE INDICATOR LIGHT
A green LED which will illuminate when external power has been applied and
the unit has been placed in the battery charging mode of operation.
E. BATTERY STATUS ENABLING SWITCH
Activates the Battery Status Indicator by toggling up or down and holding.
F. BATTERY STATUS INDICATOR
Illuminates in three diff erent modes to indicate battery potential.
Continuous green = battery is fully charged
Pulsing green = battery is partially discharged, 50% or less capacity remaining
Red = battery is fully discharged, recharge immediately
G. CHARGE INTERLOCK INDICATOR
Illuminates when the ambient temperature within the housing is too high
to charge the battery safely. When illuminated, the charging circuit has been
disabled. Th
e system can be run but cannot be charged.
H. PUMP ROTATIONAL DIRECTION SELECTION AND ON/OFF SWITCH
Th
is switch turns the pump ON and OFF and allows user to select pump
rotational direction:CW or CCW. Th
e center position is off .
I. SPEED CONTROL
Th
e one (1) turn potentiometer controls the pump speed. CW increases the
speed, CCW decreases it.
J. MAX
A switch which bypasses the speed control circuitry to make the pump run at its
maximum rated speed. Can be used
to prime or purge tubing depending on the position of the Rotational Direction
Selection Switch (H).
K. DRIVE POWER INDICATOR
A green LED which illuminates when the Rotational Direction Selection
(ON/OFF) Switch is in a position other than off . Th
is indicates that the drive
mechanism is powered.
