Burkert Type 8681 - Manual (Page 76)

76
Service Mode / Manual Control
procedure for activating & deactivating the manual control for valve location 2/a1:
Observe safety guidelines for the system prior to using the manual control.
→
Activating the magnetic manual control:
→
Hold the manual control tool on the identification points between the cable glands for three seconds
(see Fig. 29)
("blinking pattern" in fault color = 50 ms ON, 450 ms OFF – active manual control;
"blinking pattern" in fault color = 100 ms ON, 100 ms OFF (3x) – manual control function disabled by the
software).
Once the service measure has been completed, deactivate the magnetic manual control:
→
Hold the manual control tool on the identification points between the cable glands for three seconds
(see Fig. 29).
After a power failure, the magnetic manual control is reset and the control head restarts in standard oper-
ating mode, i.e. the signal of the higher-level control is applied.
17.2. Mechanical Manual Control
If additional manual controls are required for additional service purposes or in the event of a failure of the elec-
trical energy, it is possible for all voltage and communication designs to switch the connected process valve using
the mechanical manual control of the solenoid valves after opening the housing.
Danger!
danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!
Opening the hood or the housing in an explosive atmosphere is only allowed in the isolated state! •
Mechanical
manual control
Red lever:
left: 0
right: 1
Mechanical manual control of the solenoid valves Fig. 30:
Once the service measures have been completed, reset all manual controls to "0" for control-operated
operation of the system!
english
Control Head Type 8681