3329 Manual
KOBELT MANUFACTURING CO. LTD
Rev A
MNL-3329.docx
8
3
I
NSTALLATION
3.1
M
ECHANICAL
The relay valve must be mounted on a flat surface with adequate strength and stiffness to withstand the
system vibrations and flow forces. Choose a location that is as close as possible to the brakes.
The valve is equipped with (2) two clearance holes for ¼ [M6] screws or bolts inserted from the front.
Ensure the unit is securely fastened, preferably with an anaerobic thread locker such as Loctite 243.
Reference
Appendix A: Installation Dimensions
3.2
P
IPING
To make the proper piping connections at the control valve, refer to the diagram below.
The 3329-EP relay valve is equipped with a 1/8 NPT emergency bypass port. Ensure that 100 psi
regulated air is supplied to this port for lifting applications. If the electro-proportional valve fails, this
supply pressure will override and set the relay valve to maximum output.
Loss of braking:
Failure of the electro-proportional solenoid valve may result in a sudden loss
of braking and result in an accident. Ensure that 100 psi regulated air is
supplied to the emergency bypass port for lifting applications.
Figure 3: Piping Connections
