Own water supply system is the conditions of comfort in a country house, which is remote from centralized engineering systems. If there is a well or a well on the site, arranging an autonomous water supply will be a simple task. To do this, it is enough to use a domestic pumping station.
Such an aggregate is presented quite widely today. You can buy a design of any configuration and power. It is important to consider several factors, among them:
- height of rise of water;
- accumulator volume;
- reliability of automation;
- specifications;
- materials used;
- installation method.
As for the suction height, it is characterized by the lifting height and is one of the important characteristics. It affects the features of the autonomous water supply. It is possible to classify pumping stations according to the type of suction. They are:
- multi-stage;
- with remote ejector;
- centrifugal;
- with integrated ejector.
Among other market offers, one can highlight the Grundfos MQ 3 45 pumping station, which will be discussed below.
MQ 3-45 Model Description
You can buy this option of pumping equipment for 23 700 rubles. This device is a self-priming pump that raises water from a depth of 8 m. The unit is intended to increase pressure and water supply in the following conditions:
The device is cooled by the pumped liquid, which helps to reduce the noise level. Protective functions are built into the design and allow you to turn off the pump in automatic mode during overheating or dry running.
Technical Specifications Reviews
The Grundfos MQ 3 45 96515415 pumping station has a capacity of 1000 W, which, according to consumers, is pretty good. The cable length is 2 m. The design has an ejector. The noise level during operation of the device reaches 55 dB. Permissible fluid temperature is equivalent to 35 ° C.
The overall dimensions of the installation, as buyers emphasize, are quite compact and equal to 320x218x570 mm. The equipment weighs 13 kg. The pressure reaches 7.5 atmospheres. Grundfos MQ 3 45 pump housing is based on steel. The voltage is 220 V. The maximum ambient temperature during operation of the equipment can reach 45 ° C.
According to consumers, you may also be interested in performance. It reaches 70 liters per minute. The suction depth is 8 m, while the lifting height is 42 m.
Positive feedback
Before choosing one or another model of pumping equipment, you should familiarize yourself with its positive features. According to customers, the Grundfos MQ 3 45 pumping station has many advantages, among which are:
- ease of management;
- wear resistance;
- reliability.
As for the first property, it is provided by a convenient control panel on which light indicators and one button are located. The described equipment, according to users, is quite durable. This manufacturer managed to achieve thanks to the robust housing, which is made of steel.
It is impossible not to mention the details, as well as the nodes of the pumping station, which are made of chromium-nickel steel and are highly loaded. Customers also talk about reliability. It is provided with a check valve, which eliminates the occurrence of a reverse current of water.
Additional advantages of the pump station Grundfos MQ 3 45 can be considered compact size, long life and automation. As for the dimensions, they allow you to install the device in a confined space. But the service life is provided by a pressure tank, with the help of which it was possible to reduce the number of cycles of intermittent short-time switching. This reduces the wear of engine parts.
User's manual
If you purchased pumping equipment, then before you start using it, you need to familiarize yourself with the features of installation and dismantling of the installation. Before installation, make sure that all parts are in satisfactory condition. Before dismantling, disconnect the power supply from the motor. The power cable is dismantled according to the rules and regulations that apply on site.
Before commissioning, the pump must be filled with water through the corresponding hole. After starting, the equipment will begin to displace air that has entered the hydraulic system. After the water supply starts, the device will switch to normal operation. If after 5 minutes the unit has not started to supply water, it will automatically stop, for which the protection system is responsible. Next, an alarm will sound.
Grundfos MQ 3 45 pumping station, the photo of which is presented in the article, will be subjected to maintenance during operation. To do this, you will need a special tool in the form of a manometer. But the standard set of tools includes:
- a set of cutting tools;
- a screwdriver;
- double-sided wrench;
- pliers for circlips;
- nozzle for screws.
If the pump was being repaired, then before starting it, it is necessary to replace the gaskets with new ones, as for the O-rings. All parts must be washed before using the device. Their condition must be checked.
Pump repair: possible malfunctions and their elimination
If during operation you notice that the equipment does not start, the reason for this may be insufficient water. To correct the problem, check the supply and suction piping. Sometimes the unit does not start due to overheating when the temperature of the pumped liquid exceeds 35 ° C.
In the event of such conditions, it is necessary to provide cold fluid to the installation. Sometimes the pump seizes or sticks, which is due to overheating. In this case, it is better to contact the supplier of the equipment. Having familiarized yourself with the description of the Grundfos MQ 3 45 pumping station, you can understand that sometimes the unit starts to work in emergency mode. In this case, you must perform a reset using the “On. On / Off. ”
But if the equipment does not stop, then this leads to damage or leakage of the pipeline. It needs to be repaired. When the unit is dry, check the flow. The problem can be expressed in the incorrect operation of the suction pipe.
Pump repair: replacing the shaft seal
To dismantle the shaft seal, loosen the mount and remove the clamp. In the next step, the screws are removed. Using a screwdriver, you need to remove the cylindrical body and dismantle the part of the suction cavity. The shaft is held by a screwdriver.
The next step will be the removal of pressure chambers and impellers, as well as the washer. The rotating part of the seal is removed. Using a screwdriver, you need to get the fixed part of the seal, and then you can proceed to its installation.
The instructions for the Grundfos MQ 3 45 pump station indicate that the stationary part of the seals must be installed so that the groove faces the intermediate subassembly. The rotating part of the seal is installed in the next step, as is the washer, as well as the snap ring. Pressure chambers and o-rings are installed on the motor assembly.
Operation Features: Alarm
Alarms can help stop the pump. This happens if the equipment runs dry when the pressure drops below 2 bar and water consumption is below 1.2 L per minute. Reviews of the Grundfos MQ 3 45 pumping station will make it clear that the alarm is given for 60 seconds, then overheating occurs. This is followed by the start of the thermal relay in an electric motor. In the latter, overload occurs.
Work at "jamming"
The motor may jam. In this case, you can reset it to its original position. When this function is turned on, the unit will try to automatically start every 30 minutes for a day. This also happens when any other malfunction occurs. If after this time the problem persists, the pump will remain in emergency operation. Resetting it to its original position will be possible only manually.
Finally
It is better not to carry out the repair of the Grundfos MQ 3 45 pump station yourself until the warranty period has expired. During this time, it is best to seek help from service specialists. If you encounter problems, you can use the automatic reset.
You can learn about the operation of this function by the light indication. Before you start troubleshooting, you should check the installation conditions of the equipment. For example, it is extremely important that the magnet assembly of the turntable be directed vertically toward the sensor assembly.