Chongqing air conditioning fluoride to find Chengbang, service phone: 023-86379229
1. Chongqing air conditioning removal and installation, warranty of one year,
2. Cleaning, fluoride. Warranty half a year.
3. Air conditioning repair after the opening of the warranty warranty, free repair within the warranty period.
4. Price in accordance with the air conditioning repair price list. Reasonable and transparent,
5. Repair materials genuine original, undertake Gree, the United States, Haier, Chigo, Hisense, Kolon after-sales service.
6. Door to door fast, 1 hour door to door,
Chongqing main city cleaning phone. Chongqing air conditioning repair,
Chongqing central air conditioning system maintenance program:
Chongqing central air conditioning 24-hour service hotline; < in the comments of this answer can be clicked to view "
Central air conditioning after a long period of time running air conditioning chilled water, cooling water system, refrigeration hosts and fan cooling discs inevitably appear scale, rust, sludge, Bacteria, algae and dust problems will directly lead to weakened refrigeration capacity, shortened service life, reduced operational reliability, energy consumption, resulting in increased operating costs. In order to save energy and reduce operating costs to develop a central air conditioning system maintenance plan.
I, chiller maintenance:
Project
Maintenance content
Implementation time
Responsibility
Remarks
Maintenance and inspection in normal operation
Check the compressor refrigeration oil oil pressure and oil quantity
Daily inspection
Duty
Personnel
System leakage detection (refrigerant), leaks found in a timely manner
Check for abnormal sound, vibration and high temperature
Check the temperature and pressure of the condenser and the cooler
Check the various valves are normal
Check the temperature and pressure of the water in and out of the water chiller
Check the main Circuit terminals and there is no loose compaction
Check the electrical control part of the anomaly; check the instrumentation, the controller's working condition
Check whether the unit lubrication system oil is sufficient
Check the refrigeration equipment safety protection device set value
Check the compressor refrigeration oil oil pressure and oil, if necessary, refrigeration oil replacement and replenishment of the compressor Motor insulation
Check and tighten the circuit of each wire contact
Check whether there is air in the refrigeration system, if so, the air should be discharged
Condenser
Evaporator
Maintenance (removal of dirt)
a) Preparation of 10% hydrochloric acid solution (add 0.5g of corrosion inhibitor to each 1kg of acid solution)
b)Remove the condenser, evaporator ends of the water in and out of the flange closed, and then filled with acid solution, pickling time of about 24 hours. Also available acid pump cycle cleaning, cleaning time of about 12 hours;
c) acid cleaning with 1% NaOH solution or 5% Na2CO3 solution for 15 minutes, and then finally rinse with water more than 3 times;
d) all cleaned, check whether the leakage, such as leakage, then apply for outsourcing maintenance; such as no leakage, then re-installed (such as flange sealing rubber gasket has been Aging should be replaced).
1 year/times
November/year
Power group
Personnel
Outsourcing
Important
Maintenance of the electrical control part
a) Do simulation tests on the intermediate relay and signal relay to check whether the action of both is reliable, and whether the output signals are normal or not, or else the intermediate relay should be replaced with one of the same type. Replace the intermediate relay and signal relay of the same type;
b) Apply for outsourcing maintenance if there is any problem with PC central processor and printed circuit board.
1 year/times
November/year
Power group
Electrician
Outsourcing
Compressor
Maintenance
a) Compressor motor insulation resistance (normal 0.5MΩ or more);
b) Compressor running current (normal rated value, three-phase basic balance);
c) compressor oil pressure (normal 10-15kgf/Cm2);
d) compressor shell temperature (normal 85 ℃ or less);
e) suction pressure (normal value of 4.9-5.4kgf/cm2);
f) exhaust pressure (normal value of 12.5kgf/cm2);
g) Check the compressor for abnormal noise or vibration;
h) Check the compressor for abnormal odor.
Through the above checks to comprehensively determine whether the compressor is faulty, if so, the compressor should be replaced (outsourced maintenance).
Daily inspection
Duty personnel
Electrician
Outsourcing
Check the compressor oil level, oil color. If the oil level is lower than 1/2 position of the observation mirror, then the cause of oil leakage should be identified and troubleshooting before filling the lubricant; if the oil has been discolored then the lubricant should be completely replaced
Two, the water circulation pipeline part of the maintenance:
Projects
Maintenance content
Implementation time
Responsible person
Remarks
Pump maintenance
a) Rotate the pump shaft, observe whether there is blockage, collision, jamming phenomenon, if it is a bearing problem, then add lubricant to the bearings or replace the bearings; if it is a problem with the impeller of the pump, then you should dismantle and repair the pump;
b) Check whether water leakage into the line at the pressure plate root, and if it is so, then you should add the pressure plate root.
30th of each month
Duty personnel
Electrician
Maintenance of throttle valve and regulating valve
a) Check whether there is leakage, if so then the packing should be pressurized;
b) Check whether the valve is flexible in opening and closing, if there is a large resistance then the valve stem should be filled with lubricating oil;
c) If the valve is cracked or opened and closed, then it should be replaced with one of the same size.
c)If the valve is cracked or fails to open and close, the valve should be replaced with the same specification;
d)Check whether the flange connection is leaking, if so, the sealing gasket should be dismantled and replaced.
Monthly 30th
Duty personnel
The whole circulating water system inspection and maintenance
Check the elastic coupling for damage, if so, the elastic rubber gasket should be replaced.
Clean the water pump filter.
Tighten all the fastening bolts of the water pump unit.
Clean the water pump unit shell, such as paint or rust corrosion is serious, it should be repainted again.
Check whether there is a large amount of condensate in the chilled water pipeline, cold air supply pipeline, fan coil pipeline, or the insulation layer has been damaged, if so, the insulation layer should be repaired or replaced.
30th of each month
Power group
All
Outsourcing
Motor repair and maintenance
a) Use 500V rocking meter to test whether the insulation resistance of motor coil is above 0.5MΩ, otherwise it should be dried or repaired;
b) Check whether there is any blockage in the motor bearing. If there is a lubricating oil should be added, such as adding lubricating oil is still not work should be replaced with the same type of bearing specifications;
c) check the motor wind blade there is no rubbing shell phenomenon, if there is a should be repaired and dealt with.
30th of each month
Power group
Electrician
Three, cooling tower part of the maintenance:
Projects
Maintenance content
Implementation time
Responsible
Remarks
motor part of the
maintenance
Maintenance
It is necessary to check with 500V rocking meter to see if there is a problem with the motor. p>The insulation resistance of the motor should be not less than 0.5MΩ by 500V rocking meter, otherwise the motor coil should be dried and treated, and the motor coil should be dismantled and repaired if it is still less than 0.5MΩ after drying and treatment.
30th of every month
Power group
Electrician
Check whether the motor and fan are rotating flexibly, if there is any blockage, then lubricant should be added; if there is any abnormal friction sound, then bearings of the same type and specification should be replaced
30th of every month
Power group
Electrician
a) Check whether the belt is cracked or badly worn. whether it is cracked or badly worn, if so, the belt should be replaced with the same specification;
b) check whether the belt is too loose, if so, adjust the inspection; check whether the pulley and shaft fit loosely, if so, it should be refurbished
Monthly 30th
Power group
Electrician
Overall Inspection
Check whether water is distributed uniformly by water distributor, if so, clean the pipes and nozzles. Otherwise, the pipes and nozzles should be cleaned
End of the month
Power group
All
Cleaning the cooling tower (including filler, water collection tank), clean the fan blades
Checking whether the recharge float valve is operating reliably, or else it should be repaired
Tighten all the fasteners
Cleaning the entire cooling tower exterior
Maintenance of end air cabinet:
Item
Maintenance content
Implementation time
Responsible person
Remarks
End air cabinet maintenance
Clean fan coil shell, condensate tray and condensate pipe
End of each month
Power Group
All
Clean the inlet and return air primary air filters, exclude the air inside the coil
Check whether the fan rotates flexibly, belt tightness. If the phenomenon of blocking or belt is too loose, should be filled with lubricant and adjust the motor distance. If there is abnormal friction sound then the fan bearing should be replaced.
With 500V rocking meter testing fan motor coil, insulation resistance should not be less than 0.5 MΩ, otherwise it should be refurbished. Check the capacitance of deformation, bulging or cracking, if so, should be replaced with the same specification capacitance; check whether the junction is firm, whether there are traces of overheating, if so, then make the corresponding repair
Clean the fan fan blades, coils, water trays on the dirt
Hydrochloric acid solution (inside the corrosion inhibitor) to remove the scale of the coil lining
Tighten all the fasteners
Five, Maintenance of all control cabinets:
Items
Maintenance content
Implementation time
Responsible person
Remarks
AC contactor maintenance
a) Remove carbide and metal particles in the arc extinguishing shield;
b) Remove dirt on the surface of the contactor and all around (but do not repair the contactor). file the contacts), c) replace the AC contactor with the same specification if the contacts are seriously ablated;
d) clean the dust and dirt on the iron core;
e) tighten all the fastening bolts
Weekly on Friday
Power Group
Electrician
Thermal Relay Maintenance
a) check the wire joints of the thermal relays There are no traces of overheating or burns, if there are, they should be refurbished and treated, and if they are not up to the requirements after treatment, they should be replaced;
b)Check whether the insulating cover on the thermal relay is intact, and if it is damaged, it should be replaced
End of each month
Power group
Electrician
Automatic air switch repair and maintenance
a)Measurement of the insulation resistance with a 500V rocking meter should be less than 0.5V. Insulation resistance should not be less than 0.5MΩ, otherwise it should be dried and processed;
b)Remove carbide or metal particles in the arc extinguishing cover, and replace it if the arc extinguishing cover is damaged;
c)Remove small metal particles on the surface of the contacts (don't repair the file)
End of each month
Power group
Electrician
Signal light
Indicator Instrumentation Maintenance
a) Check whether the signal lamps are normal, if they are not bright, replace the small bulbs with the same specification;
b) Check whether the indicator instrumentation is correct, if the deviation is large, then appropriate adjustments should be made, and after adjustment, the deviation is still large, it should be more
end of the month
Power Group
Electricians
Other Items
Clean dust and dirt inside and outside the control cabinet
Daily
Duty personnel
Check, tighten all the connectors, for serious corrosion of the connectors should be replaced
Sixth, the outsourcing of maintenance:
1, in the process of daily maintenance, if there is a need to replace the spare parts or can not be achieved to apply for an external supplier to deal with.
2, chiller annual maintenance according to the requirements of the contract for the sale of negotiated processing, such as the costs incurred by the two sides to negotiate another charge.
VII, 2012 central air conditioning unit maintenance plan according to the annex.
VIII, through the above maintenance of the central air-conditioning unit is expected to achieve the following types of results:
1, protection of equipment, prolonging the service life: it can prevent rust, scale. Avoid equipment corrosion, damage, especially after preventive treatment, so that the service life of the equipment doubled, after putting into the corrosion inhibitor, can make the equipment system corrosion rate decreased by 90%.
2, reduce accidents, improve refrigeration effect: can sterilize algae, remove sludge, make the pipeline smooth, clear water. At the same time to improve the heat exchange efficiency of the condenser, evaporator. Thus, avoiding high-pressure operation, overpressure shutdown phenomenon, improve chilled water flow, improve the cooling effect, so that the system runs safely and efficiently.
3, energy and water conservation, reduce costs: in the removal of scale, prevent scale formation, improve heat exchange efficiency at the same time, reduce the consumption of electricity or fuel. Water treatment also reduces the amount of sewage and improves the utilization rate of circulating water. Thus, production costs are reduced.
4, substantial savings in maintenance costs: untreated central air conditioning, there will be equipment piping clogging, scaling, corrosion, overpressure shutdown or even failure. Such as: running the system due to corrosion leakage, resulting in solution contamination, it is necessary to