A mono-block pump is a type in which the pump and motor are kept together inside a single housing. Mono means single, but a monoblock pump is a unit rigidly linked to a prime mover, such as a motor. The energy is transferred from the motor to the shaft without energy loss. These pumps will most likely be used for commercial purposes in India in 2023.
When water flow is going well, people often ignore routine maintenance tasks of pumps. They convince themselves that inspecting and repairing parts constantly is unnecessary. But this might lead to severe complications and malfunction. To avoid this, Monoblock pumps must be regularly checked and maintained.
Installation of Mono Block Pumps
- Place the monoblock pump on a concrete base that has been levelled. When mounting the Monoblock, create a flat concrete foundation and tighten the motor base using the foundation bolts.
- Set the pump’s centre line 3 to 6 metres from the water’s surface.
- To minimise suction losses, use a high-quality foot valve and as few pipe fittings as feasible in the suction line.
- Look for foaming or fading of the oil. For overheating, check the bearing temperature. Check each gasket to make sure there are no leaks of oil.
- Start the Monoblock by connecting it to the starter.
- Use the two earth screws on the leg of the motor body to ground the monoblock.
- Make that any electrical joints are properly and sufficiently insulated.
- To avoid any loose connections, please connect the cable to the starter terminals properly.
- Two leads that emerge from the terminal box of the motors should be internally wired and pre-connected with the capacitor leads.
Ensuring Safety While Installing and Using Mono Block Pumps
- Install the pump in a semi-wet area to prevent the water in the well from drying out.
- A de-activated submersible pump should not be lowered in the well, as it will being to rust and fail to operate when needed. Hence, the Pump should be switched on for 5-10 minutes once a week for its proper functioning.
- The operating effectiveness and durability of the Pump can be affected by an excessive fluxional between low and high voltages.
- Switch off the power right away if the current voltage is 10% or higher or lower and the current is 20% more than the submersible pump current that has been set.
- While some pumps can run briefly without overheating, others must only be utilised in dry environments.
- Before lowering the Pump into the well, examine its cooling system.
Maintenance of Monoblock Water Pumps
1.Lubricate at Regular Intervals
Lubricate the motor and pump bearing. As this helps better the two-and-fro motion of the motor. Make sure not to lubricate too much.
2.Mechanical Inspection
- Verify the security of the mounting points.
- Examine the packing and mechanical seal. Check the pump flanges for leaks.
- Examine the couplings.
- Check and clean the filters.
3. Motor Inspection
- Check for the tightness of all terminations.
- Check for dust/dirt accumulation in the motor vents and windings, and clean following the manufacturer’s instructions.
- Look for arcing, overheating, etc., in the starter/contractor.
- Check the windings for insulation failure using a megohmmeter.
4. Replace Damaged Seals
Replace any hoses, seals, or O-rings that exhibit wear or damage immediately. A temporary rubber assembly lubricant guarantees a tight fit and avoids leaks or slips.
Correct Way to Use Monoblock Water Pumps
- Check the pump’s parts frequently for wear and tear and replace them immediately. For instance, keep an eye out for any sand or grit moving in pipe plugs and suction line fittings because it can easily scratch the gears’ seal faces. Examine and change any worn-out components.
- Remove any debris by cleaning the area around the pump.
- Install a priming facility next to the pump discharge flange. While priming, look over the pump suction pipe for leaks. A water-filled pump casing is necessary for priming.
- Examine the pump for excessive vibration or strange noises.
- Depending on the type of pump, different monoblock pumps have different operating conditions. So plan accordingly.
- Install a high-quality NRV (Non-Return Valves) to the pump delivery flange as closely as possible in the delivery line if the installation has a high static delivery head.
Final Word
A mono block must be installed by following all the guidelines and by a proper technician in India 2023. These pumps can be utilised under any circumstances. Check out the L&T-SuFin website for a wide range of monoblock pumps and read the blogs. The site also offers financial and logistical support to its customers to make the buying process easier.