Metrohm 752 Pump Unit User Manual
Page 17
2 Installation
752 Pump Unit
14
10 Startup of 752 Pump Unit
•
Set switch <REMOTE> 22 on 752 Pump Unit to "OFF".
•
Switch on 752 Pump Unit with mains switch 12
12 and set switch
<PUMP> 33 to "ON".
•
Adjust the contact pressure for both tubing cartridges: press
contact pressure lever 55 upwards until the solutions just start
to be drawn in. Then press the contact pressure lever up-
wards until it clicks once more to obtain optimal contact pres-
sure.
•
Check all capillaries between the 752 Pump Unit, the sup-
pressor module and the waste container for escaping liquid. If
liquid escapes anywhere the corresponding compression fit-
ting must be tightened further or changed.
Pump tubings are consumable material with a lifetime which depends
on the contact pressure. This is why the tubing cartridges should be
raised completely by loosening snap-action lever 77 on the right-hand
side if the pump is to remain switched off for a considerable length of
time (the set contact pressure remains unchanged).