2.3 Step Motors:
FMI STH and STQ standard pumps are supplied
with a 23 frame, 1.8°/ step, hybrid 8 lead step motor.
For wiring diagram and detailed motor specifications
see
Figure F
2.4 Rotational Sensor:
FMI STH and
STQ standard pumps are supplied with an LED
rotational sensor. For wiring diagram and sensor
details see
Figure G .
2.4.1
For sensor use with FMI SCST-01 Step
Motor Controller
see SCST-01 instructions.
3.0
CALIBRATION AND TESTING
3.1
Flush the system: clean with alcohol
or other suitable cleaning/wetting agent
before using the hydraulics and pump for the
first time. Prime pump with fluids to assure
system is free of air bubbles.
3.2
Place pump in the standard "home"
position with the piston-flat perpendicular to
the inlet port.The inlet port will be on the left
when the motor rotates clockwise (see
Figure B
for the STH pump and
Figure C
for
the STQ pump).
OUTLET
STQ PISTON FLAT - SENSOR / FLAG
RELATIONSHIP TO INLET AND OUTLET PORTS
CLOCKWISE
MOTOR
ROTATION
PISTON
FLAT
PISTON
FLAT
INLET
CLOCKWISE
MOTOR
ROTATION
OUTLET
ADJUSTMENT
SCREW
FLAG
SENSOR
STH PISTON FLAT - SENSOR / FLAG
RELATIONSHIP TO INLET AND OUTLET PORTS
INLET
3.3 Check the pump's dispense volume
by
cycling the pump for one complete 360°
revolution (one complete rotation). Dispense onto
an analytical pan balance and observe the volume.
See Figure D.
Readjust as necessary.
REMARK
: When dispensing water-like solutions
assume 1 ml = 1 gram. A correction factor will
be required for other fluids.
PAN BALA
INLET
OUTLET
WATER SUPPLY
CLOCKWISE
ROTATION
Figure B
Figure C
Figure D
pan Balance
2
5 Aerial Way, Suite 500, Syosset NY 11791 Tel: 516-922-6050 Fax: 516-624-8261
Website: www.fmipump.com Email: [email protected]
ST431-02
