MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-180 - Manual (Page 80)

Model 505.60 - 505.180 SilentFlo™ HPU 80
Resetting the Thermal Overloads
Operation
Additional protection is provided by line fuses (FU1–FU9 for the Model 505.60/
.90 and FU1-FU18 for the Model 505.120–.180) and transformer fuses (FU10–
FU12 for the Model 505.60/.90 and FU19–FU21 for the Model 505.120–.180).
These cartridge-type fuses must be replaced with fuses of the same size, type, and
rating, which vary according to the voltage configuration.
A tripped thermal overload or a blown fuse indicates a potential short circuit, too
much heat in the electrical box, or a component failure (mechanical or electrical).
Reset the thermal overload switches or replace the fuses as follows:
1. Turn the main disconnect switch counterclockwise to remove power from
the electrical control box.
2. Loosen the three bolts securing the door of the electrical enclosure and open
the door.
3. Locate the thermal overload switch. Press Reset to clear the switch. If the
thermal overload switch trips again, wait until the switch cools.
Thermal
Overloads
Transformer
Fuses
Line
Fuses