MTS Model 506-62-72 Hydraulic Power Supply - Manual (Page 26)

3-14 Service
3 . 3 . 1 Abnormal HPS Shutdown
Motor overload Sudden shutdown of the HPS may be due to circuit protection elements
in the pump motor starter assembly. If the supercharge motor
overloads, the relay opens and de-energizes the motor starter coils to
shut down the HPS. If the pump motor overloads, the pump shuts
down.
Reset procedure If a motor overloads, follow this procedure to reset it.
1. Turn off ac power at the HPS disconnect switch.
WARNING !
High voltage is present in the starter assembly if power is not removed.
Failure to remove power before opening the HPS starter box door may
cause death or injury.
Remove electrical power at the power disconnect switch.
2. Open the starter box door and locate the appropriate motor
overload relay (Figure 3-3).
3. Press the reset button located on the relay to enable operation.
N O T E The overload relay element may be equipped with a
switch to provide manual or automatic reset. This
switch should always be set to the manual position.
3 . 3 . 2 Fuse Replacement
Table 3-2 lists the fuse values and part numbers of the fuses located in
the starter assembly. Figure 3-3 shows the location of the fuses.
Table 3-2. Starter Assembly Fuse Values
Fuses Type MTS PN
FU 1 through FU 3 30A slo-blo 100725-05
FU 4 and FU 5 3A slo-blo 111457-06
FU 6 6A slo-blo 100524-27
FU 7 4A slo-blo 100524-04
FU 8 through FU 10 250A slo-blo 100725-52