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Related Manuals for Hitachi RCUF50WZPY
Summary of Contents for Hitachi RCUF50WZPY
- Page 1 Model RCUF50WZPY RCUF65WZPY RCUF80WZPY RCUF110WZPY RCUF130WZPY Use and Maintenance Manual Hitachi Water-Cooled Chillers Unit -Screw Type- Note: Before installation of this water chilling unit, please read this manual carefully, and maintain it properly for future reference.
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Page 2: Table Of Contents
□RCUF110WZPY □RCUF130WZPY Thanks for your purchase of Hitachi water chilling unit. Please read this Use and Maintenance Manual in details beforehand, so as to ensure correct use of the water chilling unit which you've purchased. Besides, this Use and Maintenance Manual will be helpful in case that the water chilling unit malfunctions or you have any doubt regarding the unit. -
Page 3: Foreword
1 Foreword This product applies to ordinary air- occasions according to relevant laws and conditioners in the domestic market and regulations. For relevant matters, please general industrial applications. consult the dealer or the contact point The water chilling unit is a device installed to designated by the manufacturer. - Page 4 Installation and electrical engineering Please entrust the dealer from which you purchase the unit or professional personnel to install the unit. When independent installation is not in place, water leakage, electric shock, fire, or toppling of the water chilling unit may occur, leading to persona injury accidents.
- Page 5 This product uses fire-resistant, nontoxic and scentless safe refrigerant (fluorocarbon), if the fluorocarbon, however, leaked and contacted with a fire source will generate toxic gas. In addition, because the specific weight of fluorocarbon is heavier than the air, thus it will lead to oxygen deficit if it's concentrated near the ground.
- Page 6 Warning!! Must use specified refrigerant!! The air-conditioning equipment uses specified refrigerants. When a non-specified refrigerant is sealed in the air-conditioning equipment, it may result in defects, malfunction, failure, etc., which may severely influence the security of the equipment. Especially, the leakage of refrigerants such as dimethyl methane and hydrocarbon (HC), because they are highly inflammable, is prone to triggering major disasters such as fire or explosion, which is very dangerous.
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Page 7: Names Of Various Structural Parts
3 Names of various structural parts Names of various structural parts of the unit Mechanical configuration of the water chilling unit (RCUF50WZPY, RCUF65WZPY) is shown in the following diagram. LCD operations Manual reset and reset button Compressor Electric High-voltage cut-off device... - Page 8 Mechanical configuration of the water chilling unit (RCUF80WZPY, RCUF110WZPY, RCUF130WZPY) is shown in the following diagram. (Manual reset and with reset button) Electric LCD operations High-voltage cut-off device control box Drain plug Drain plug Specification Cooling Cooling Cold Cold nameplate water outlet water inlet water inlet...
- Page 9 Names of the operating parts of the unit The mechanical configuration of the electrical control cabinet for local operation is shown in the following diagram. [General configuration of the electrical control cabinet (RCUF50WZPY, RCUF65WZPY)] [Detailed diagram of the LCD] Use the LCD (touch screen) to set water temperature and volume control, etc.
- Page 10 The mechanical configuration of the electrical control cabinet for local operation is shown in the following diagram. [General configuration of the electrical control cabinet (RCUF80WZPY, RCUF110WZPY, RCUF130WZPY)] [Detailed diagram of the LCD] Use the LCD (touch screen) to set water temperature and volume control, etc. Current water temperature, operating condition, alarming content, historical records of alarms, etc, can be verified through the LCD.
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Page 11: Commissioning
4 Commissioning Verification essentials before commissioning Please verify the following items before commissioning, to prevent interference to the water chilling unit's performance. 1. Is power correctly connected? Standard voltage 380V/415V 50Hz specification Special voltage specification Is grounding properly done? Are pump operating wiring and pump interlock wiring connected? Do not operate the water chilling unit without input of the pump interlock signals. - Page 12 Items to be verified during commissioning Benchmark and essentials Item Inspection key points Note (1) Voltage Transient voltage upon start of Tester compressor -- (Above 15 % of rated voltage) Operating voltage--within (rated A range of ±3% must not be voltage ±1%) Voltage phase unbalance ...within ±2% exceeded under special...
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Page 13: Operation Method
5 Operation method The unit can be operated via the local switches or remotely. Up to 8 units of the product can be interconnected to form a cold source system, which can automatically control the unity quantity in accordance with the load. Please refer to "7 Settings and operation method of unit quantity control" (page 19). □... - Page 14 Stop signal: OFF pulse signal (more than 200ms) Upon connecting the remote operation wiring, please remove the shortcircuit wire. Run/Stop Field wiring ★ PBS Long distance control RCUF80WZPY RCUF50WZPY ON/OFF on/off button Unit type RCUF110WZPY RCUF65WZPY Long distance operation RCUF130WZPY ★...
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Page 15: Stop Sequence
□ Local operation (Standard) Sequence of operation Inlet and outlet valves of cooling Switch on the power of the water Switch on the power supply of the pumps for cold water and cooling water circulation and the cooling tower Press the “Run” button Start to run the pumps for cold water and cooling water circulation and to run the cooling tower The compressor starts to run about 30 sec... -
Page 16: Settings Of Water Temperature And Application Functions
6 Settings of water temperature and application functions Through the toggle switch and selector switch on the LCD and Setting substrate (PWB ) respectively, you can set the water temperature and application functions. 1. Details drawing of operating and display devices (Detailed drawing of LCD) Use the LCD (touch screen) to set water temperature and volume control, etc. - Page 17 [Controller settings] Substrate settings of various units RCUF50, RCUF65 WZPY RCUF80, RCUF110, RCUF130WZPY...
- Page 18 Symbol Content design Typical type 40 HP RCUF80WZPY 50 HP RCUF50/110WZPY DSW1 60 HP RCUF65/130WZPY Unused Unused Description: "0" and "1" indicate OFF and ON respectively Settings and functions are as follows: ( 1) Manual setting switch "DSW1-1" and "DSW1-2" are respectively used for No.1 and No.2 compressors. Put the switch (DSW1-1, DSW1-2) to "OFF"...
- Page 19 Power on Standby screen Main screen Maintenance menu (for after-sale service personnel) Operating Tex data parameters Compressor data Evaporator data Condenser data Expansion valve data Water temperature Parameter setting Parameter setting setting Volume control Optional functions settings Compressor delay time System setting Clock setting Alarm details...
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Page 20: Settings And Operation Methods Of Unit Quantity Control
7 Settings and operation methods of unit quantity control 1. Setting method Implement the following settings in the field. Connection of communication line Use the communication line to connect the control terminal blocks of the water chilling units in the same group (up to 8 units) (44), (45). -
Page 21: Main Screen
Setting substrate (PWB ) DSW3 DSW3-1 DSW3-2 DSW3-3 No.1 machine Switch to the remote side (host) No.2 machine No.3 machine No.4 machine No.5 machine No.6 machine No.7 machine Set the address per the table to the No.8 machine Set the unit quantity to be interconnected According to the quantity of water chilling units which have been set with addresses on No.1 machine Put the arrow to the unit... - Page 22 (2) Pump interlock wiring (compulsory) Pump interlock wiring is connected per the diagram (page 12). Please input pump interlock signals to all units. Do not run the unit pump interlock signals Interlock number of the pump In addition, please follow the "Recommended connection method"...
- Page 23 (3) Pump operation command wiring (compulsory) The wiring must be serial, to ensure the all units can output pump operation signals. When pump interlock is used, you can input pump operation signals to all units during system operation. When pump interlock of a centralized pump system is used, it's only necessary to connect the wiring of No.1 machine (host).
- Page 24 (5) LCD configuration The items that must be set of the unit control are as following. Corresponding system Setting Unit linkage control Initial Setting item Content scope/procedu Quantity All units start value of units and stop control simultaneously. Temperature According to the target value of the cold water inlet temperature for the unit difference control of unit linkage control, set the temperature difference with the cold ○...
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Page 25: Precautions For Prolonged Vacancy
8 Precautions for prolonged vacancy The inspection key points when re-starting the operation the power supply must cut off prior to check. The check points before the operation Item Inspection key points Benchmark and essentials Note (1) Whether the dust and foreign matter are cleaned? Tighten with a screwdriver (2) Whether the screw and... - Page 26 The check points before the operation Benchmark and essentials Note Item Inspection key points (1) Can't fully visible or unclear? Confirm the situation by visual (2) Whether the date and time are inspection. correct? Confirm the situation by visual inspection LCD monitor Fuse (1) Whether the fuse rating meets...
- Page 27 The inspection key points for long time stop Benchmark and essentials Item Inspection key points Note (1) Whether the dust and foreign matter are cleaned? (2) Whether the screw and washer Tighten with a are loose? screwdriver or spanner. Appearance (3) Whether the pasted nameplate Confirm the situation by and interior...
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Page 28: Maintenance Of Compressor
R, S, T and correctly connect the phases of R, S, T of the terminal block. 11 For better use of the unit Please plan within the available scope shown in the following table to ensure the safe use of the machine. Available scope Type RCUF50WZPY RCUF65WZPY RCUF80WZPY RCUF110WZPY RCUF130WZPY ℃... - Page 29 Precautions 1. Cold water temperature and cooling water temperature When exceeding the usage range, it will cause the frequent startup of the protection device, so the machine is prone to malfunction. 2. Cold water flow and cooling water flow When the flow is too small, it is prone to local freezing (on cold water side) or dirt accumulation due to poor flow. On the other hand, when the flow is too large, it is prone to corrosion of heat transfer pipe due to flow velocity, or knocking, noise and crack due to the vibration.
- Page 30 Water retention volume The minimum water retention volume is the amount of water necessary for the water chilling unit to continuously operate for 5 minutes without load. This amount of water is the amount required to control the water temperature variation rate returned to the water chilling unit.
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Page 31: Water Quality Management
Water quality management Under the condition of poor water quality, the copper used in the heat exchanger may be corroded, the inner side of the heat exchanger may be attached with water scales, which will reduce the performance of the heat exchanger, and even cause failure. - Page 32 The target of standard operating pressure Smudginess of heat exchanger will reduce the cooling capacity. When the cleaning area under high- pressure pressure and low-pressure pressure is shown below, please clean the heat exchanger. The area needed to be cleaned Normal operating range of the unit The area needed to...
- Page 33 Discharge of recycling water When discharge the recycling water such as maintenance, the general power supply should be cut off, discharge the recycling water in the water chilling unit in the area shown below, and clean the filter at the same time.
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Page 34: Cautions For Use
Cautions for use Anti-freezing cautions in winter In order to prevent the recycling water from freezing, heat exchanger from damage and other accidents when the water chilling unit stops operating in winter, the piping insulation or installation of heater shall be conducted, etc. on the spot, prevent the circulating water from freezing, or discharge the circulating water in the water chilling unit according to the chapter "discharge of circulating water' as described in the previous page. - Page 35 Regular point inspection of the safety device and record of the running situations To ensure safety and make the water chilling unit maintain a good running state, regularly independent point inspection shall be made to record running parameters. Following is the record card of the unit running.
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Page 36: Reset Method After Activation Of Protective Device
12 Reset method after activation of protective device When the water chilling unit exceeds the use scope or malfunctions, the protection device will be activated to make the water chilling unit stop. To rerun the water chilling unit, it needs to eliminate the cause of starting of the protection device and reset it. - Page 37 误操作(本地→远程) Incorrect Operation/Local>Remote Operation error, switching operation of 误操作(制冷→制热) Incorrect Operation/Cool>Heat refrigerated/heating and local/remote during running 误操作(制热→制冷) Incorrect Operation/Heat>Cool Running command that is given 误操作(设定为本地时远程运行) Incorrect Operation/Remote OP. remotely in local setting Running command that is given locally 误操作(设定为远程是本地运行) Incorrect Operation/Local OP. in remote setting 液温...
- Page 38 [Safety protection and set value of control device] Type RCUF50WZPY RCUF65WZPY RCUF80WZPY RCUF110WZPY RCUF130WZPY High pressure Manual reset and adjustable control Cut-off 1.38 1.38 1.38 1.38 1.38 Low pressure Automatic reset and non-adjustable control Disconnection 0.01 0.01 0.01 0.01 0.01...
- Page 39 Do not touch the protective device. A protective device and a PCB are installed inside the water chilling unit to Warning prevent accidents. It may occur short circuit when contacting with such devices, or changing its settings, resulting in machine failure, electric shock, fire, and even explosion etc.
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Page 40: Lcd Display
Operation before the protective device is activated. (1) Protection control This unit has a protection control function that allows the unit to be redundant, preventing the unit from being stopped due to a sudden alarm. Protection and control may be provided sometimes in accordance with the operating conditions, and sometimes there are suspicious signs to stop running due to an alarm. -
Page 41: Specification
5. The water side standard design pressure of the heat exchanger at the unit water side is 1.0MPa. If there is any demand for special high-pressure tank, please contact with Hitachi dealer. 6. When leaving factory, the client-side flanges are not attached, and shall be provided by customers. -
Page 42: Warranty And Service
When a contract is signed with the service company designated by the company, the professional service personnel of the Hitachi water chilling unit will provide the maintenance service in lieu of the customer, so that the machine is in good working condition at any time. Failures can be found in advance, so they can properly handle within the event of a major failure. - Page 43 Customer Please fill the information below and hand over it to the customer in order to serve the customer in the future. Name of store: ___________________________________________ Tel.: ___________________________________________ Date of purchase: DD/MM/YYYY...
- Page 44 Please contact your local agent, as the occasion arises. Hitachi’s liability shall not cover detects arising from the alternation performed by a customer without HITACHI's consent in a written form.
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