YSI P 700 IQ Analyzer - Manual (Page 94)

94 ba76133e01 09/2013
P 700 IQ
5.4.8 Performing a Hydraulic check
You can check the functioning of the valves and pump.
After the Hydraulic check function was started
• all 5 valves are once activated one after the other
• the pump is tested in 3
conditions (slowly forwards, quickly forwards, backwards)
Thus you can check the functioning of the valves and pump on the open
P 700 IQ.
Maintenance interval As necessary
Preparations 1 Carry out the steps 1…11 in section 5.3.4 Maintenance and
cleaning work on the open P 700 IQ,  73.
2 Start the Hydraulic check function.
All valves are activated once.
Performing the check 3 Count the number of switching noises.
You will hear 10 switching noises if all valves are working.
4 Count the number of pump movements.
You will see 3 pump movements if the pump is working OK.
Restarting the
measuring operation
5 Carry out the steps 15…20 in section 5.3.4 Maintenance and
cleaning work on the open P 700 IQ,  73.
The order in which the valves are checked is indicated on
the display:
HYDRAULIC CHECK
Cycle:
V8 (on/off) - V7 (on/off) - VK5 (on/off) - V11 (on/off) - VK6
(on/off) - pump (forward slowly) - pump (forward fast) -
pump (backwards)
If a valve or the pump does not work:
• Decommission the P 700 IQ.
• Contact the service department.