Burkert Type 6520 - Manual (Page 8)

6 - 6520
english
Work on the device should only be carried out by specialist staff using the
correct tools!
Before carrying out work on the system, always switch off the voltage
supply!
Implement the pressure supply with as large a volume as possible (even for
pilot devices such as pressure regulators, service units etc.);
Operating pressure
≥ 2,5 bar;
Minimum flow rate 270 l/min at P connection of valve 1) 1) 1) 1) 1)
Before mounting the valve, clean out the pipelines!
Note, that contamination impairs the function of the PIEZO pilot valve!
Where necessary, fit a dirt trap upstream to protect from faults.
Ensure that the operating conditions agree with the performance data of
the unit!
Avoid back pressure in the exhaust channels by means of a large-volume
silencer!
4 INSTALLATION AND COMMISSIONING OF THE VALVE
Line connections and valves must not be loosened while
the system is under pressure !
There are no replacement parts for the unit! In case of fault,
please return the unit to the manufacturer.
ATTENTION!
1) In the case of version with reduced flow rate
(ID no. 141 721 Z; ID no. 141 72 S), the flow rate is reduced to 150 l/min.