Central air conditioning water system cleaning and maintenance 1.cooling water system 1.1 water flushing
System full of water, open the pump to run, such as circulating cooling water system turbidity is high, then drain replacement, such as turbidity is less than 20mg/l is transferred to the next step. The purpose is to remove mechanical impurities and suspended solids in the system.1.2 Sterilization and algaecide, cleaning pre-film dosing point: cooling tower running time: 48 hours
Adding agent: cleaning pre-film agent H-50110Kg
This stage of the prohibition of water drainage, continuous operation, do not drain the water after 48 hours, and then transferred to the next step of the treatment.
The purpose is to remove the bacteria and algae in the system, purify the metal surface, and form a protective film on the metal surface. To achieve the purpose of preventing corrosion. Through the experiment, it can be seen that the corrosion of pre-film or not is at least 20 times different.1.3 Basic dosage
Dosage point: cooling tower
Dosage of chemicals: corrosion and scale inhibitor H-8014Kg
The purpose is to make the concentration of the corrosion and scale inhibitor to reach the required dosage at one time.1.4 Normal dosage
(1) corrosion and scale inhibitor H-801 to add: add corrosion and scale inhibitor H-8012Kg using a metering pump to add, on time and continuously added, synchronized with the cooling water circulation pump. (2) bactericidal algaecide to add the amount of every two weeks to add a dosage point: cooling tower
Adding bactericidal algaecide H-3034Kg
Adding bactericidal algaecide, the first clean up the cooling tower tower pool, a large number of sewage discharge, and then add bactericidal algaecide. Maintain 6 ~ 8 hours without sewage. 2. chilled water system 2.1 water flushing
System is full of water, open the pump running, such as chilled water turbidity is high, it is drained replacement, such as turbidity is less than 15mg / l is transferred to the next step. The purpose is to remove mechanical impurities and suspended solids in the system.2.2 Sterilization and algaecide, cleaning pre-film
Pharmaceutical injection point: make-up water tank or expansion tank running time: 48 hours
Pharmaceutical injection: cleaning pre-film H-5017.5Kg
This stage of the prohibition of drainage, continuous operation, 48 hours after not draining, directly to the next step. Do not drain after 48 hours, directly transfer to the next step of treatment. The purpose is to remove the bacteria and algae in the system, purify the metal surface, and form a protective film on the metal surface. In order to achieve the purpose of preventing corrosion.
Through the experiment, it can be seen that the corrosion of the pre-film or not is at least 20 times more than the difference. 2.3 Adding chemicals
Pharmaceutical injection point: replenishment tanks or expansion tanks
Pharmaceutical injection: chilled water corrosion inhibitor H-81025Kg
Pharmaceuticals are put into the system at one time, and the concentration of the agent is analyzed after 24 hours of operation. Analyze the concentration of the agent after 24 hours of operation. Refill agent:
Every three weeks to analyze the concentration of the agent, and according to the analysis results to determine the amount of refill agent. *** need to add 25Kg.
Fan coil part of the cleaning (part of the contents of the optional)
1, the fan coil separation: removal of the fan's connecting wiring, removal of the fan box and the bypass pipe fixing, remove the fan box.3, cleaning fan fan blades: the fan out of the box, separate the fan motor, clean the wind drum and impeller.
4, fan motor lubricant filling: rotate the fan, see the motor running with or without noise, bearing running condition when necessary to add lubricant. 5, coil fins cleaning: remove the coil fixed to take down the coil, with a spray can to spray the cleaning agent on the fins, rinse the fins with a water pistol. 6, take down the air outlet, the return air filters, cleaned with water. 7, clean the fan coil tray. Unclog the drain.
New air conditioner cleaning:
1. Clean the fan coil air outlet, filter. 2. Cooling coil physical cleaning 3. Refrigeration coil agent chemical cleaning 4. Physical rinsing after chemical cleaning
Cooling tower maintenance:
Cooling tower maintenance process is divided into Three stages, that is, after the shutdown cleaning and maintenance, before the start of the inspection and debugging, the formal start-up operation of the inspection tour. (A) cooling tower downtime cleaning, maintenance 1, water system ① check the cooling tower main water pipe, water pipe, nozzle with or without broken loose, timely repair, fixed. Thoroughly remove the water pipe and nozzle inside the dirt to ensure that the water pipe is smooth, nozzle water uniformity. ② thoroughly rinse the cooling tower water pan and water filter cover, to avoid the accumulation of scale and dirt blocking the pipeline. Cleaning should be opened to drain the valve, drain the water disk water to avoid freezing. ③ Check the water pan, tower feet whether leakage, if leakage, timely patch glue. 2, cooling system ① cleaning cooling tower all heat exchanger material (filler), thoroughly remove the heat material surface, between the holes of the scale dirt, to ensure that the heat exchanger material is clean. Repair and replace the heat exchanger material when disassembling. Pay attention to the filling of the cloth closely, leaving no gaps. ②Clean the waterproof curtains and muffler blankets, and remove the dirt. Repair and replace the damaged places. Waterproof curtain yard put when required closely, to prevent water drift. Cooling tower on the water, check whether the water leakage (especially the tower connection), if the leakage is to replace the seals. 3, the transmission system ① motor: check whether the motor terminals are intact, the motor is normal, the motor junction box for the sealing of the motor bearings oil lubrication, the motor shell to re-spray paint. Long-term downtime, construction owners run the motor at least 3 hours a month, keep the motor coil dry, and lubricate the bearing surface. ② reducer: check whether the reducer rotation is normal, if there is a strange sound, immediately replace the reducer bearing. ③ Belt and pulley: adjust the top wire and loosen the belt to prolong the life of the belt. Check the belt for damage and cracks, and suggest the owner to replace the belt with a new one if necessary. Calibrate the pulley, motor frame level, tighten the loose bolts, and replace the rusted bolts. ④ Fan: clean the fan blade surface dirt, check the fan blade angle, fan blade and wind carcass clearance, and adjustments. 4, tower appearance ① wind carcass, tower, into the wind guide plate for a thorough cleaning, to ensure that the appearance of clean and beautiful. ② re-tighten all parts of the bolt, and replace the rusty bolt. ③ Check the appearance of the tower body for damage, cracks, and timely repair. ④ check the tower wall plate seam is tight, if necessary, re-brush glue repair. 5, cooling tower accessories ① check the automatic water replenishment device - float with or without damage, whether the work is normal. Abnormalities found in a timely manner repair, replacement. ② cooling tower iron bolts re-tightening, replacement of rusty bolts, corrosion of iron parts of the new paint. ③ check inlet and outlet pipes, water supply pipe tower flange with or without damage, water leakage, cooling tower cleaning and maintenance is completed, it is recommended that the owner of the cooling tower wind carcasses with color strips of enclosure cloth wrapped sealed to prevent debris from entering the cooling tower interior. (B) the cooling tower before the start of the inspection, adjustment ① remove the wind carcass blocking, adjust the top wire, adjust the belt tightness. ② carefully check the cooling tower drive system motor, reducer operation is normal. ③ Check and clean up the cooling tower water pan, filter dirt, drain the water to check the water pan, tower foot tightness, adjust the float position, so that the water pan water level in line with the use of requirements. ④ Adjust the fan angle, measure the motor current, so that it reaches the best working condition standard. ⑤ Adjust the cooling tower inlet and outlet valves, so that the cooling tower water flow to meet the requirements. Requirements have, the official start.
(C) the cooling tower running patrol, inspection ① regular patrol inspection of the cooling tower in operation, seek the views of the user to understand the use of cooling towers ② carefully test the cooling tower inlet and outlet water temperatures, motor operating current and other technical data. ③Check carefully the running condition of the motor, reducer and other transmission devices. Check the actual working condition of water distribution system. ④ Discover the fault and deal with it immediately. Timely, thoughtful, high-quality after-sales service is our goal,
Engine room air conditioning evaporator, condenser, central air conditioning table cooler cleaning
Physical cleaning: remove the surface chunks; rinse with water or high-pressure air pumps to rinse the floating dust
Chemical cleaning: remove the surface chunks; with special cleaning agent Spray, infiltrate for a short time and then wash with water. Can be repeated many times.
Wind system central air conditioning duct cleaning.