小米彩票开奖

Shanghai SUNNY-HVAC Refrigeration Equipment Co., Ltd.!
Contacts
Water-cooled screw chiller, working principle of water-cooled chiller, schematic diagram of screw chiller, low-temperature cold-storage screw unit, refrigeration screw machine working diagram
Water-cooled screw chiller, working principle of water-cooled chiller, schematic diagram of screw chiller, low-temperature cold-storage screw unit, refrigeration screw machine working diagram
[Water-cooled screw chiller unit start-up precautions]
Release date:[2019/11/25] Is reading[85]次

Daily start of water-cooled screw chiller unit


1。 The unit control cabinet provides three pairs of switch output points to control the start and stop of the chilled water pump, cooling water pump and cooling tower。 If more than one unit is used in parallel, it should be adjusted to confirm that the amount of water passing through each unit meets the requirements for use;


2. Check or reset the various settings on the display of the electric control cabinet to meet the requirements of use (generally do not change, the unit has been set to the best state before leaving the factory);


3。 After the relay contacts of the chilled water pump, cooling water pump and cooling tower are interlocked with the unit control cabinet, the following control logic will be executed: Before the unit starts, the freezing (medium) water pump is started, then the cooling water pump is started, and then the unit is started。 If it lasts for 3 seconds (can be set), it detects that the water flow switch is disconnected, and the shutdown reports a fault。 The start and stop of the cooling tower is controlled according to the cooling water (adjustable)。


4. After the unit is running, confirm that the compressor has no abnormal vibration or noise. If there is any abnormality, stop the machine immediately.


5. After the unit is in normal operation, use the clamp meter to check whether the running currents meet the unit design requirements.



Water-cooled screw chiller unit resumes seasonal use


1. Carry out maintenance inspection according to the operation and maintenance regulations of auxiliary equipment manufacturers such as pumps and cooling towers;


2. Close the drain valve on the water system (or screw the screw plug), open the shut-off valve on the main circuit of the water system, open the exhaust valve on the water system, flush the required water volume for the water system, and close the bleed valve after the gas is removed. ;


3. Check whether the relevant parts on the electrical circuit are loose, whether the suction action of the contactor is free, whether the insulation package is damaged, and the accumulated dust is purged;


4. Close the main power switch to send power to the starter cabinet, confirm that the compressor oil has been heated for more than 8 hours;


5. Start and run the unit in the order in which the unit is started on a daily basis.


Please strictly follow the above operation, otherwise it will not ensure the normal operation of the water-cooled screw chiller, and even reduce its service life to some extent!


Keyword:
Phone:0086-4006769700 / 021-57406070 Fax:0086-021-57406123 E-mail:4006769700@taorepu.com Address:No.158 Huian Road Wuqiao Industrial Park Fengxian District Shanghai China
All rights reserved Shanghai SUNNY-HVAC Refrigeration Equipment Co., Ltd. Technical support:
优优彩票APP 小米彩票开奖 亿信彩票app 500万彩票 幸运时时彩开奖结果 北京pk10 500彩票网 一分时时彩官网 百万彩票 北京pk10