Repair manual

General Operation

wc_tx000111gb.fm 36

Preparing for Installation

Before installing the pump at a work site, you will need to have the

following tools and instruments ready:

• Insulation resistance tester (megohmmeter)

• AC voltmeter

• AC ammeter (clamp-on type)

• Bolt and nut tighteners

• Power supply connection tools (screwdriver or box wrench)

Note: Please also read the instructions that come with each of the test

instruments.

Checks to Make Before Installation

• When a three-prong grounded plug is used:

• Use the megohmmeter to measure the motor insulation resis-

tance between the grounding prong and each one of the two

power prongs.

• When connection wires are used:

• With the megohmmeter, measure the insulation resistance

between the ground wire (Green) and each one of the two power

wires.

• Reference insulation resistance: 20MΩ or greater

Note: The reference insulation resistance (20MΩ or greater) is the

value when the pump is new or has been repaired. For the reference

value after installation, see Maintenance and Inspection.

Precautions in Installation

When installing the pump, pay close attention to its center of gravity

and weight. If it is not lowered into place correctly, it may fall and be

damaged or cause injury.

When transporting the pump by hand, be sure to employ manpower

commensurate with the weight of the pump. To avoid back injury when

lifting the pump, bend the knees to pick it up rather than bending your

back only.

Do not under any circumstances install or move the pump by

suspending it from the cable assembly. The cable may be damaged,

causing current leakage, shock, or fire.

4.3.1 Avoid dropping the pump or other strong impact. Lift the pump by

holding it firmly with the hands or by attaching a rope or chain to the

lifting handle.

WARNING

CAUTION