1. 0 scope of application: hotel central air-conditioning system recycle pumps, valves, etc。
2. 0 reference: none
3. 0 content
3. 1 the maintenance cycle provides for:
3. 1. 1 operating pumps and spare pumps for air-conditioning pumps shall rotate between them at least once a month。
3. 1. 2 air-conditioning pumps perform general maintenance once a month and complete maintenance every quarter and every year。
3. 1. 3 valves, pressure meters, piping etc. Within a 5-metre range connected to the pump are maintained along with the pump。
3. 2 maintenance specifications:
3. 2. 1 pumping body:
A. Check the quality and quantity of lubricants for compliance and should not be refuelled in a timely manner, such as if the oil is coloured and iron crumbs should be replaced in full。
B. Checking the flaccidness of the root: water drops are in compliance with the regulations; check that the compaction is secure and undisturbed。
C. No permeability of pumps, water spills, trachoma, and no flow of permeability of pump axes to the ground。
D. Checking the flow of the pump axis with flexibility, with the pump axis being in the same centre line as the electric axle, with a tight seat, no rusty screws (with rustproof measures) and full gaskets。
E. Clean appearance, well painted and clearly marked。
3. 2. 2 valves, pipelines, interface attachments:
A. Valves are flexible, closed and free of leaks。
B. Valves, handles are intact, valves are smooth and clean。
C. One-way valves are flexible and free of leakage。
D. Checking pressure sheets: pressure gauges are flexible, precise, secure, and surface valves and connections are not permeable。
3. 2. 3 electrical:
A. The electric power plant is clean, its nameplates are clear, its components are secured, the coaxle covers are intact and the site is well。
B. Measurement of round-group insulation: insulation meets the requirements。
C. The electrical end plate link is reliable, has good exposure, has no signs of heat change, and external extraction lines are not loose。
D. Electrical control component: wiring clean, contact point exposure is good and the contact point should be replaced if the contact point is severely incinerated (with 1/3 of the original thickness). The handle is intact and the location is correct。
3. 2. 4 functioning:
A. Three dots to start and observe the currents of the pumps and start, signals and instructions before they become normal
Run。
B. When the pump is operational, the output pressure of the pump shall be normal, the components shall be smooth, non-jump-free, non-obvious vibration, non-animous, pressure gauges shall be stable, three-phase current balances shall be less than 2 per cent, and the rate of rotation and current close to the rated values。
