Operating instructions

TM 55-4920-394-13&P
CHAPTER 2
OPERATING INSTRUCTIONS
SECTION I. CONTROLS AND INSTRUMENTS
2-1. Controls and Instruments. All controls and instruments are identified and described in Table 2-1 and
Figure 2-1. Fill system, cooler fan and instrumentation controls are located on the right side of the control
panel.
SECTION II. OPERATING PROCEDURES
2-2. Preliminary Procedures. Make the following checks before operating the test stand.
CAUTION
Check whether voltage supply is 220V to 440V.
Check transformer connections and interchange if necessary for
appropriate voltage as shown in figure 2-2.
a. Housing doors shall be closed per stenciled instructions on doors. Open panel door.
b. Connect power plug properly to power supply source.
c. Check hydraulic reservoir fluid level. For proper operation of test stand maintain hydraulic fluid
level in reservoir ¾ full minimum.
NOTE
Power "ON" switch must be ON to energize Reservoir Level Indicator (13, fig. 2-1).
2-3. Pre-Operation Control Settings. Place the controls listed below in the positions indicated (fig. 2-1).
Control Position
H.P. Gauge Shutoff valve (26) ¼ turn from full closed
Pressure Selector valve (6) H.P. pump inlet
Pressure Control (30) Opened to lowest pressure
setting
Flow Control valve Closed
H.P. Relief valve (27) Lowest pressure setting
2-1