Tronair 5731, Operation & Service Instructions

Page: 9 / 119

Model: 5731
Hydraulic Power Unit
08/2016 | Rev. 08 Page | 4
5.2
NUMERICAL VALUES (continued)
5.2.4 Electric Motor
A 75 horsepower, TEFC electric motor is the prime mover for the HPU. This is attached to the hydraulic pump using a
pump/motor adapter and a spider/coupling rotating interface.
MOTOR POWER REQUIREMENTS
60 Hz Applications 50 Hz Applications
Voltage Full Load Amps Voltage Full Load Amps
380 103.8 380 107
460 92 415 105
575 73.6 440 92
FIGURE 5.2.4 - Motor Power Requirements
5.2.5
Filters

Pressure .......................................... 2 micron rating, non-bypass high collapse microglass type. Non-cleanable element.

Return ............................................. 5 micron rating, 25 psi (1.72 bar) bypass microglass type. Non-cleanable element.

Hand Pump (Option M) ................... 2 micron rating, non-bypass microglass type. Non-cleanable element.

Air/Desiccant ................................... 3 micron filter, silica gel desiccant type. Non-cleanable element.
5.2.6
Hand Pump (Option M)
Two stage hand pump, low pressure stage 0

500 psi (0

34.47 bars) and 500

5,000 psi (34.47

344.74 bars) high pressure
stage. Pump automatically changes stage internally based on system pressure.

Low Pressure Stage: Piston Diameter ........................ 1½ in (38.1 mm)
Working Pressure ..................... 0

500 psi (0

34.47 bar)
Displacement/Stroke ................ 2.1 in3 (34.4 cm3)
Force/100 psi (6.89 bar) ........... 12.0 lbs/100 psi (7.74 N/bar)

High Pressure Stage: Piston Diameter ........................ 5/8 in (15.88 mm)
Working Pressure ..................... 500

5,000 psi (34.47

344.74)
Displacement/Stroke ................ 0.4 in3 (6.55 cm3)
Force/100 psi (6.89 bar) ........... 2.2 lbs/100 psi (1.42 N/bar)

Pressure Relief Setting: 5,250 psi (362.0 bar)
5.0 Operation continued on following page
FIGURE 5.2.4

Motor Power Requirements