MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-30 - Manual (Page 33)

505.20/.30 HPU Connections
Model 505.20 - 505.30 SilentFlo™ HPU Installation 33
The first time a pump motor is started after electrical service is connected to
the HPU, it is possible for the pump motor to rotate in the wrong direction.
A pump motor rotating in the wrong direction at high pressure for longer
than 10 seconds can cause severe damage to your HPU.
If the output pressure does not increase within 10 seconds after High is selected,
stop the unit.
2. Connect the grounding wire to the lug labeled PE GND (protective earth
ground).
Connecting the
hydraulic lines
The figure shows the hydraulic adapter ports to the HPU.
Note Each hydraulic connection requires an O-ring face seal.
CAUTION
PE GND (Protective
Earth Ground) Lug
Power
Disconnect
Electrical Power Feed
Lugs (shown labeled for
counterclockwise phase
orientation)
Ensure lugs are secure.
They should be checked
periodically. Refer to the
Maintenance section.
HPU Power Requirement
and Power Feed Phase
Orientation Identifier
Return
-16 (1 in)
Drain
-8 (1/2 in(
Water In
1 in NPT
Pressure
-16 (1 in)
Drain
-6 (3/8 in)
Water Out
1 in NPT