MTS Series 505G2 SilentFlo Hydraulic Power Unit Model 505G2-180 - Manual (Page 36)

Description Item
PE GND (Protective Earth Ground) Lug 1
Electrical Power Feed Lugs (shown labeled for counterclockwise phase
orientation)Ensure that lugs are secure. They should be checked
periodically; Refer to the Maintenance section. 2
4. Connect the hydraulic and water lines.
Note:
For hydraulic connections to air-cooled units, refer to the Air-Cooler to SilentFlo HPU Integration
Product Information manual (MTS part number 100-135-073).
Each port is labeled on the manifold. Take care to identify and correctly make these connections. Failure
to make proper connection could lead to water in the hydraulic fluid, hydraulic fluid in the cooling water,
or pressurization of low pressure lines.
The HPU requires connection to a suitable water supply to cool the hydraulic fluid. The differential pressure
required between the HPU water inlet and outlet connections is 0.2–0.3 MPa (30–45 psi). The maximum
allowable water inlet pressure is 0.8 MPa (120 psi).
36 Series 505G2 SilentFlo™ Hydraulic Power Unit Product Information
Installation