For 20 feet container, our normal lead time is 30 to 45 days from the date of conformation of order along payment or copy of L/C.

There are two main components of centrifugal pump.

1. Impeller and shaft (Moving parts)
2. Casing, casing cover and bearings (Stationary parts)

Pump efficiency is defined as the ratio of the power imparted on the fluid by the pump in relation to the power supplied to drive the pump. It is the ratio of hydraulic power to shaft power.

MHP refers to the horsepower supplied in the form of electrical current. The efficiency of most motors range from 80-95%.

BHP refers to the horsepower supplied to the pump from the motor. As the power moves through the pump, additional horsepower is lost, resulting from slippage and friction of the shaft and other factors.

Water horsepower refers to the actual horse power transferred to the pumped water.

Two things are required in horse power selection.

1. Discharge (m³/h / GPH / liter/min)
2. Dynamic head (feet / meter)

Based on these factor a pump can be selected from the characteristic curves and then Motor horsepower accordingly.

5” or 6’’ well casings should be used for 4” Submersible. Lower sizes can create physical/ mechanical problems during installation. Whereas extra-large size can affect the cooling of the motor.

Yes, Komax produces Water filled rewind-able submersible motors.

Submersible motor fails because of the following reasons.

1:Over Temperature:

 Pumping Hot water, Frequent motor on & off.

2: Stator Failure:

 Insulation of Winding is damaged.

3: Hydraulic Loading:

Water Hammer or hydraulic shock loading.

4: Motor Seal:

If motor seal is damage, then sludge enters the motor and damage it.

5: Voltage:

Motor fail because of under voltage or over voltage.

6: Voltage Spikes:

A very serious problem for all induction motors failure are voltage spikes.

7: Over Loading:

Water impurities increases, mechanical damage and Locked impeller or dragging, causing overload.

Ideally the pump should be placed above the main filter of the bore in the blind. If drawdown occurs in such case than the pump setting level in the normal well is 6’ to 8’from the bottom. But if the well bottom is sandy then the pump setting is 20’ to 25’ from the bottom in order to prevent the motor from the sand. It is always advisable to use a cooling jacket in case the pump is installed below the main filter of the well.

During the pump installation safety rope provides some level of protection during pump set falling and helps in retrieving it.

The 3 phase submersible motor has four wires. Red, black, blue and the yellow-green ground wire. The red, black and blue all connect to L₁, L₂ & L₃ in the control box. The yellow-green is connected to the ground terminal.

Yes, Komax Installation / Operating manuals are supplied with each pump/motor and every model.

Yes, coupling dimensions are in accordance with NEMA Standard, it can be coupled with any other NEMA Standard pump/motor.

When a motor / pump is operated in under voltage condition, the motor will consume more current which results in increase of winding temperature and may lead to motor burnout.

When over voltage condition occurs the insulation of winding may fail causing short circuit leading to motor burnout.

The reasons are

1. Under or over voltage
2. Unbalanced three-phase power
3. Loss of insulation resistance
4. High ambient temperature
5. Very high or low flow rate
6. More mechanical friction in the pump or motor
7. High viscosity or specific gravity of the liquid.

Troubleshooting information is provided in the Installation and Operating Manuals supplied with all the Komax products.

A submersible pump pushes water to the surface by converting rotary energy into kinetic energy and kinetic energy into pressure energy. This is done by the water being pulled into the pump. First in the intake, where the rotation of the impeller pushes the water through the diffuser. From there, it goes to the surface.

Submersible motor is an electric motor which can operate while being submerged in water. This sealed motor is typically used with pumps. It converts electrical energy into mechanical energy (shaft power).