Metrohm 709 IC Pump - Manual (Page 30)

3 Operation
709 IC Pump
22
3.4.2 Maximum pressure limit
The maximum shutoff pressure of the pump can be set in steps of
0.1 MPa from 0.1 … 50 MPa with the pump drive switched on or off. Pro-
ceed as follows:
1 Select "P
max
"
Press key 4 until the "Pmax" LED 12 lights up. 2 Set shutoff pressure Press < ↓ > key 5 or < ↑ > key 6 until the desired shutoff pressure (in MPa) appears in display 1. 3 Store shutoff pressure Release < ↓ > key 5 or < ↑ > key 6: the value shown in display 1 at the time of release will be stored. The set limit value should lie between 5.0 and 10.0 MPa above the par-ticular operating pressure or the maximum admissible operating pres-sure of the column. If the pump exceeds the preset limit value during operation, the pump drive is switched off within 1 pump cycle and dis-abled. If the pump has been switched off by the maximum pressure limit monitoring, the LED 12 flashes, the shutoff pressure can be re-quested in the display "Pactual" (see section. 3.7). Pressing the key 3 re-enables the pump drive, LED 12 no longer flashes and the pump is in the standby mode. Pressing the key 3 again puts the pump back into operation. The 2.709.0110 IC Pump MF (metal-free version) should only be operated in the pressure range of 0…25.0 MPa (0…250 bar). With higher pressure, the 6.2824.100 PEEK pump head can be damaged. So make sure that the maximum shutoff pressure Pmax of the pump is always set to ≤ 25.0 MPa. 3.5 Switching the pump drive on and off Switching on Pressing the key 3 switches on the pump drive. While the pump drive is running, LED 2 above the key 3 lights up. Switching off To switch off the pump drive, press the key 3 again. LED 2 goes out. Pages: 1 … 28 29 30 31 32 … 70 wrong Brand wrong Model non readable See also other documents in the category Metrohm Pumps: 872 Extension Module IC Pump (79 pages) 818 IC Pump (56 pages) 823 Membrane Pump Unit (38 pages) 772 Pump Unit (46 pages) 752 Pump Unit (29 pages) 843 Pump Station with peristaltic pump (56 pages) 843 Pump Station with membrane pump (47 pages) Sitemap
max
" LED 12 lights up.
2 Set shutoff pressure
Press < ↓ > key 5 or < ↑ > key 6 until the desired shutoff
pressure (in MPa) appears in display 1.
3 Store shutoff pressure
Release < ↓ > key 5 or < ↑ > key 6: the value shown in display
1 at the time of release will be stored.
The set limit value should lie between 5.0 and 10.0 MPa above the par-
ticular operating pressure or the maximum admissible operating pres-
sure of the column. If the pump exceeds the preset limit value during
operation, the pump drive is switched off within 1 pump cycle and dis-
abled. If the pump has been switched off by the maximum pressure
limit monitoring, the LED 12 flashes, the shutoff pressure can be re-
quested in the display "P
actual
" (see section. 3.7).
Pressing the key 3 re-enables the pump drive, LED 12 no
longer flashes and the pump is in the standby mode. Pressing the
key 3 again puts the pump back into operation.
The 2.709.0110 IC Pump MF (metal-free version) should only be
operated in the pressure range of 0 … 25.0 MPa (0 … 250 bar). With
higher pressure, the 6.2824.100 PEEK pump head can be damaged.
So make sure that the maximum shutoff pressure P
max
of the pump is
always set to ≤ 25.0 MPa.
3.5 Switching the pump drive on and off
Switching on Pressing the key 3 switches on the pump drive.
While the pump drive is running, LED 2 above the
key 3 lights up.
Switching off To switch off the pump drive, press the key 3
again. LED 2 goes out.