4 Options
4000021245
15
4.3
Emergency brake release
The emergency brake release (EBR) option allows releas-
ing the brake and lowering loads larger than 900 lbs with
an auxiliary hydraulic supply. In case of failure of the main
hydraulic system, it allows safe lowering of a suspended
load.
Application benefit:
In an emergency situation the operator can easily unload
the crane to secure the system and to prevent damage.
Emergency brake release interface:
The emergency brake release valve is integrated in the hy-
draulic motor housing.
Connection ports ("BSPP" thread)
NA
G 1/4
Tab. 6
Hydraulic connection port sizes with external brake re-
lease
weight added with optional
emergency brake release
Gear
motor
GM085
Gear
motor
GM107
Piston
motor
PM049
weight shuttle valve plus exter-
nal brake release [lb]
approx. 1.1
Tab. 7
Data with optional external brake release
4.4
Break test valve
Using the optional Brake Test Valve, the mechanical brake
can be tested by applying pressure directly to the winch
motor only.
For the hydraulic diagram please refer to Fig. 1
3
.