American Rotary AD 60 Panduan Pengoperasian & Pemasangan - Halaman 13

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Measure L1/T1 to T3

This is the voltage between the manufactured line (T3) and one of the

single phase lines. This voltage should be up to 5% higher than the T1 to

T2 single-phase voltage.

Measure L2/T2 to T3

This voltage is the least important. It should also be within 5%. This

voltage will drop when a load is applied.

Do not measure line to ground. Voltages will vary widely when doing this.

When the load is applied, this voltage will drop. Ideally it will only drop to 5% below the

average of the 3-phase voltages.

If your load motor runs backwards, the single-phase connections to the load will need to be

reversed. Reverse only the load motor connections at T1 and T2. If lines A and B going to the

idler are reversed, then the direction of all equipment will be reversed.

3.3 GENERAL MAINTENANCE

The rotary phase converter may operate continuously with or without a load. The converter will

run cool and quiet in the no load condition because the voltages are well balanced.

1. Never start the converter with a load applied (including transformers)

2. The converter should start within a second or two. Wait to start loads (including

transformers) until the converter reaches full speed. A timer circuit can be used to

automatically start loads after the converter reaches full speed.

3.3.1 MAINTENANCE

Keep dust and moisture from the control panel and the idler. Keep dust from accumulating in the

motor. Dust can be blown out using compressed air. Keep dust from accumulating on the

surface of a TEFC model as this prohibits proper cooling.

Annually check the wires and connections on the phase converter. No connections or wires

should be loose. Also inspect for damaged or missing insulation. Be sure that power is

disconnected when doing so!

3.3.2 LUBRICATION

American Rotary rotary phase converter idlers/generators are custom made and come with pre-

packed bearings using the lubricant specifically designed for this idler. Exxon Polyrex EM high

temperature bearing grease or equivalent polyurea lubricant is recommended for the Baldor Idlers

and can be purchased through American Rotary.

DO NOT use Lithium based lubricants. These may cause premature bearing failure and will

void any warranty.

Be careful not to force so much grease into the bearings that the excess finds its way into the

windings of the idler. Some idlers have sealed bearings and will never require greasing. If the

idler has grease fittings located on the end bells of the idler, use the following rule of thumb for

scheduled maintenance:

For use of the phase converter that is less frequent, add grease to the idler bearings

approximately every 6 months. For more frequent use, add grease to the idler bearings about

every 3 months. When adding grease, one or two pumps for each fitting should be enough.