Hypertherm HyPrecision 100D, Instruction Manual

Page: 19 / 77

4.3 Pump Startup
Initial or Post-Maintenance Startup
The first time you start up your pump it is important that the Pre-Startup Inspection, Motor Direction
Check, and First Time Startup procedures (below) be performed to prevent serious damage to the pump
components. Make sure that all installation requirements have been met prior to performing any of the
following checks. Follow all safety procedures as outlined in the
Safety section of this manual.
It is common to identify leaks in the high-pressure water, low-pressure water, and possibly hydraulic
circuits while performing these procedures. Always stop the procedure and correct the leaks before
continuing.
Pre-Startup Inspection
1. Verify all safety circuits are connected and operational.
2. Check the sight gauge to make sure the hydraulic reservoir is full. Add oil as necessary to bring
the oil to an acceptable level. Refer to Hydraulic Oil in the Hydraulic section in this manual for
instructions on adding oil.
3. Verify all utilities are connected to the pump and turned on at the plant.
4. Check for loose hoses and fittings and make sure there are no leaks present.
Motor Direction Check
CAUTION
This procedure involves exposing a rotating shaft. Never place any object or any
part of your body near the shaft while exposed. Only visual inspection should be
used to prevent bodily injury. Be prepared to press the EMERGENCY STOP
button.
IMPORTANT
The motor direction check should be performed anytime electrical maintenance
has been performed on the electrical panel, motor wiring, or line wiring to the
pump. Improper motor rotation can cause irreversible damage to the hydraulic
pump and components.
1. Open or remove the front cover from the pump and locate the motor rotation arrow.
2. Remove the safety cover on the pump mount and visually inspect the coupling rotation.
3. To jog the motor, pull the EMERGENCY STOP button on the control panel, and then press the
CONTROLS ON button.
4. Press (COOLING MODE) and then press (PUMP OFF) to jog the motor. Verify
visually that the shaft is rotating the same way the motor rotation arrow indicates.
If the motor rotates in the wrong direction, swap two of the wires at the starter panel's MAIN
DISCONNECT , not at the motor or starter contactors, and then recheck the rotation. After verifying
motor rotation, replace the safety cover on the pump mount and the side covers. Also, see Motors in the
Electrical System section for additional information.
17