Asian Phoenix Resources PowerPal MHG-200HH Instrukcja obsługi i konserwacji - Strona 11

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but check the bearings to see if they have collected water. If so, turn PowerPal upside

down to drain and dry the internal shaft assembly. Do not try to dry it near a fire as the

rotor is bonded with epoxy that could be damaged by excessive heat. Before using again,

make sure that the power socket is also dry. Condensation inside the generator is normal

in tropical areas and will not effect the performance of PowerPal.

There are only two tasks that must be completed at regular intervals. These are the

changing of the bearings and the lower bearing seal.

PowerPal has two bearings, one at the top of the shaft below the generator and one at the

bottom of the shaft above the turbine. Both are pre-greased and sealed and have a life of

at least two years. They require no greasing, only replacing every two years. See the

section on Technical Specifications at the end of this manual for part numbers. These are

commonly available in most countries but if in doubt contact your dealer.

There is a black plastic seal below the lower bearing to prevent water entering the shaft.

Because the axle rotates in the middle of this seal, it is prone to gradual wear and should

also be replaced every two years of continual use along with the bearings. Two spare

seals are included with your purchase. Additional seals for future use are inexpensive and

readily obtainable.

Failure to change the bearings on time will increase friction and reduce power

output. Always dry PowerPal before changing the bearings.

Changing the Bearings and Seal

To replace the bearings and seal, follow these steps:

1. Turn off all appliances and disconnect the power cable.

2. Drain the forebay so that the water flow stops. Do not simply block the top of the

penstock. Leave the spear valve open.

3. Wait till the penstock is drained i.e. little or no water flows out of the turbine.

Alternator /

Generator

Upper

bearing

Lower

bearing

Bearing

seal

Turbine

PowerPal™ High Head