Hach TPM870 User Manual page 18

1.4.2 Hydraulics circuit
On delivery, the useful volume of a 120 ml beaker is pumped in around
35 seconds. Although not recommended, the pump flow rate can be
decreased by turning the "Pump speed" screw potentiometer (see figure).
Please note that the factory tuning corresponds to the upmost position of
the screw potentiometer.
A 15 second manual rinse can be triggered by pushing a button. The
duration of a manual rinse is set on instrument delivery using set no. 1 of
switches (see figure). This duration can be changed but this operation is
not recommended (description in Appendix B).
To the turbidimeter
measurement cell
To SAC950
("Turbidimeter" suction tube)
Button used to start
a "turbidimeter" rinsing
Demineralised water
100 ml
With this configuration, a "turbidimeter"
rinsing lasts 15 seconds
1 = 2 = OFF
1 2 3 4
Pump
Speed
RS232C
Power On
Power On
Selectors
Analyser Turbidimeter
1 2 3 4 1 2 3 4 1 2 3 4
1 2 4
Line Fuse T2A L250 V
115/230Vac 47.5-63Hz 200 VA
MADE IN FRANCE RADIOMETER ANALYTICAL SAS
TPM870 18