Motor Service - Hypertherm HyPrecision 100D Instruction Manual

Boost Pump and Fan Motor Starters
The boost motor starter uses an integrated starter and thermal overload device.
The optional fan motor starter is similar to the boost motor starter. The overload
setting has been factory set and should not be adjusted unless instructed to do so
by an authorized Hypertherm service representative. To reset the OL-BOOST or
OL-FAN turn the dial to RESET and then back to AUTO. If your shop has high
water pressure it is possible that the boost pump would elevate the water pressure
beyond the 125psi maximum. In this case, you should turn the dial switch to off
and run without the boost pump. In addition, you will need to disable the Boost
Fault Monitoring setting in the PLC. Contact Hypertherm or refer to the
supplemental control manual for information on changing this setting.

Motor Service

Boost Motor Replacement and Direction Check
In rare cases, the boost motor may need to be replaced. If the
boost motor is in need of replacement always make sure to wire
the new motor following the proper wiring diagram for the 3
phase voltage of your pump. After replacing the motor, it is
necessary to perform a rotational direction check. Take the
following steps to ensure that the motor and boost pump are not
damaged from improper rotation.
1. Remove the front and rear cover from the pump.
Make sure that you can see the boost motor coupling through the pump mount. It
may be necessary to have two people for this procedure.
2. To jog the motor, pull the EMERGENCY STOP button on the control panel, and then press the
CONTROLS ON button.
3. Press (PUMP ON) and then quickly press
4. Verify visually that the shaft is rotating the same way the pump rotation arrow indicates.
If the motor rotates in the wrong direction, swap the pair of wires at the bottom of the boost motor
starter MS-BOOST. Perform the previous steps again to make sure the rotation has reversed.
After verifying motor rotation, replace any covers that were removed.
Main Motor Lubrication
The main motor in the Hypertherm pump needs to be greased periodically. Use a good quality,
moisture-resistant, polyurea-based grease such as Chevron SRI #2.
Do not use lithium-based grease: mixing the OEM grease with lithium grease may
result in loss of lubrication, shorter motor bearing life, and shorter motor life.
Do not over-grease the bearings. Refer to the Maintenance section of the manual
for recommended intervals to grease the motor.
(PUMP OFF) to jog the motor.
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