Manual Actuation Of The Actuator Via Pilot Valves; Single-Acting Actuators (Control Function A And B) - Burkert TopControl Basic 8694 Manuel D'utilisation

Caution:(Exhaust air concept):
In compliance with degree of protection IP67, an exhaust air line must be installed in the dry area.
Keep the adjacent supply pressure always at least 0.5 – 1 bar above the pressure which is required to
move the actuator to its end position. This ensures that the control behavior is not extremely negatively
affected in the upper stroke range on account of too little pressure difference.
During operation keep the fluctuations of the pressure supply as low as possible (max. ±10 %). If fluctua-
tions are greater, the control parameters measured with the X.TUNE function are not optimum.
9.1 Manual actuation of the actuator via pilot valves
9.1.1 Single-acting actuators (control function A and B)
The actuator can be moved without a power supply from the rest position to its end position and back again. To do
this, the pilot valves must be actuated with a screwdriver.
NOTE!
The hand lever may be damaged if it is simultaneously pressed and turned.
▶ Do not press the hand lever when turning it.
Pilot valve non activated
(normal position)
Hand lever
to the left
Pilot valve activated
Hand lever
to the right
Figure 33: Pilot valves for aerate and deaerate the actuator
44
english
Pilot valve
for aerate
Pilot valve
for deaerate
Type 8694 for high air flow rate
Pilot valve
for aerate
Pilot valve
for deaerate
Type 8694
Pneumaticinstallation