Table of Contents
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DAIKIN Oil Cooling Unit
("OILCON")
AKZ8 Series
Models
Menu
Built-in
Standard
breaker
model
model (-B)
Series
AKZ148
AKZ328
AKZ438
AKZ568
AKZ908
Thank you for purchasing DAIKIN Oil Cooling Unit ("OILCON").
This instruction manual includes instructions for using the Oil
Cooling Unit.
To ensure proper use of this product, be sure to read through this
instruction manual before using it.
After reading this manual, keep it handy for your future reference.
Proper use results in power saving
If the air filter is clogged, the cooling performance deteriorates,
causing excess power consumption.
Clean the air filter periodically to reduce power consumption.
Instruction Manual
Circulating type
Built-in heater
Built-in tank
model
model
Built-in breaker
model
CE model
Built-in
Different-
CE model
heater
voltage
(-C)
model (-H)
model (-E)
Installation
Handling
Different-voltage
model
(or Machine Temperature)
Built-in
tank model
(-T1, -T)
Devices (Installed by User)
Maintenance
• When the unit operation seems abnormal
although no alarm is activated
CONTENTS
1
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5
6
7
12
14
15
16
18
19
20
21
22
23
24
25
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33
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Summary of Contents for Daikin AKZ8 Series
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Page 1: Table Of Contents
Maintenance AKZ908 Maintenance/Inspection • Daily maintenance/inspection • Periodic maintenance/inspection Thank you for purchasing DAIKIN Oil Cooling Unit (“OILCON”). • To leave the unit unused for a long period This instruction manual includes instructions for using the Oil Cooling Unit. Troubleshooting To ensure proper use of this product, be sure to read through this •... -
Page 3: Safety Precautions
Safety Precautions Before using this product, read the following instructions carefully to ensure proper use. The instructions described below are intended to prevent injury or damage to you and other people. Possible conditions that may result from improper handling are classified as follows: DANGER WARNING CAUTION... - Page 4 Do not modify this unit. casing or terminal covers of the motor or other Any person other than DAIKIN authorized service personnel must electric parts removed. Failure to observe this not disassemble or repair this unit. Failure to observe this instruction may result in electric shock.
- Page 5 WARNING If an abnormal condition occurs, stop operation immediately. If refrigerant leaks, provide thorough ventilation. If a large quantity of refrigerant is filled in the site, If an abnormal condition occurs, stop operation people in the site may be anesthetized or of the unit, and leave it unused until the cause of suffocated.
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Page 6: Oil Cooling Unit And Accessories
Maintenance AKZ908 Maintenance/Inspection • Daily maintenance/inspection • Periodic maintenance/inspection Thank you for purchasing DAIKIN Oil Cooling Unit (“OILCON”). • To leave the unit unused for a long period This instruction manual includes instructions for using the Oil Cooling Unit. Troubleshooting To ensure proper use of this product, be sure to read through this •... -
Page 7: Precautions For Installation
Precautions for Installation Installation place and oil piping To install this unit, select a place that meets the following conditions: 1. Level, rigid floor (Inclination: 5˚ max.) 5. A place that allows easy access to piping and wiring 2. A place where the unit is not exposed to direct sunlight or heat 6. -
Page 8: Reference For Pipe Selection
– Condition: ISO VG32, Viscosity: 200 mm ∗1: The above pipe size may not be applied to the unit, depending on the pipe specifications. For details, contact DAIKIN. ∗2: Refer to the pipe resistance calculation formula. Pipe resistance calculation method... -
Page 9: Electric Wiring
Electric Wiring Conduct electric wiring according to the local wiring standard. The Oil Cooling Unit (except for the “–B” model) is not equipped with a circuit breaker. A circuit breaker exclusively for the unit should be mounted to the main machine. For electric wiring, refer to the electric wiring diagram on the nameplate attached to the rear of the electrical equipment box cover. - Page 10 Mounting a circuit breaker The Oil Cooling Unit is not equipped with a circuit breaker. Be sure to mount a 3-pole circuit breaker exclusively for the Oil 12·13 Cooling Unit to the main machine. For the breaker capacity, refer to the specifications of each model (see page To ensure safety, it is recommended to use an earth leakage breaker.
- Page 11 Outline of electrical equipment box (Typical) CN11 Power supply Control terminal block board (Ground terminal) PROTECT SW (Erroneous operation prevention) Short-circuit bar Conducted by user Alarm output Operation setting and parameter Signal cable terminal block No connection setting cannot be changed. Temperature range Operation setting and parameter setting warning output...
- Page 12 Connection of external output contact To output the Oil Cooling Unit operation status signal to the main machine, connect the required signal cable to the signal 39·40 terminal block according to the procedure below. For details of alarms, refer to “Alarm list” (page To use an output contact, change the parameter setting, and make sure that the output contact normally operates.
- Page 13 Electric wiring diagram (Typical: AKZ328)
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Page 14: Model Identification And Specifications
Model Identification and Specifications Specifications (AKZ148/328/438) Oil Cooling Unit equivalent horsepower (HP) AKZ148 AKZ328 AKZ438 Model Stand- ∗3 Stand- ∗3 Stand- ∗3 –B –C –H –T1 –E –B –C –H –T1 –E –B –C –H –T1 –E ∗1 Cooling capacity (50/60 Hz) 1.3/1.4 2.8/3.2 3.8/4.3... - Page 15 ∗2: Be sure to use a commercial power supply. Using an inverter power supply may result in burnout. Voltage fluctuation range should be within ±10%. If voltage fluctuation exceeds ±10%, consult DAIKIN. ∗3: For the different-voltage model, three types (–E1, –E2 and –E3) are available depending on the power supply voltage.
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Page 16: Before Operation
Before Operation Before operating the Oil Cooling Unit, check the following items: Operating environment • Check the atmosphere for any factor (dust, oil mist, high temperature, high humidity, etc.) that may adversely affect the unit. • Check if the unit is not installed in explosive atmosphere (that may cause evolution, inflow, retention or leak of inflammable gas). •... -
Page 17: Part Names And Functions
Part Names and Functions Standard (–B, –C) (12) (13) (10) (11) –H –E –T1, –T (14) (16) (15) Name Function Name Function Sucks and compresses the low-temperature, Located at the front of the condenser. It is intended low-pressure gas refrigerant produced in the to prevent cooling capacity deterioration by Compressor Air filter... -
Page 18: Names And Functions Of The Control Panel Parts
Names and Functions of the Control Panel Parts Outline of control panel (1) (3) (10) Name Description Reference page Power lamp (Green) Lit while power supply is ON. Indicates the control panel operation mode. NORMAL : Normal mode Operation mode indicator SETTING : Operation setting mode page MONITOR : Monitor mode... - Page 19 Operation mode The control panel provides the following seven operation modes. Among these seven modes, only four modes are available for normal operations. In other modes, the Oil Cooling Unit may malfunction depending on operation. Before using each mode, please understand the description on each mode. Mode Description Operation mode indicator...
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Page 20: Checking Initial Operating Conditions
Is “U1” displayed on the control panel? phases (L1, L2 and L3). Is the “Operation lock” mode selected? Cancel the operation lock mode. The DAIKIN factory setting is the “Operation lock” mode. If you keep pressing the keys ∗ The “Operation lock”... -
Page 21: Operation Setting
Operation Setting The Oil Cooling Unit operation setting provides the following modes. ∗3 Reference Operation mode ∗1 Control method Control target Setting range temperature (Reference page) Holding constant oil temperature Fixed temperature Inlet oil temperature 0 (p. 20) 5.0–50.0 (˚C) control (Keeping a control target at a Outlet oil temperature... -
Page 22: Holding Constant Oil Temperature
Holding Constant Oil Temperature To hold a constant oil temperature, the following two types of operation settings are available. Operation mode: 0 Controlling the inlet oil temperature at a constant temperature Controlling the outlet (returned) oil temperature at a constant temperature Operation mode: 1 Outlet oil temperature control Operation mode: 1... -
Page 23: Tuning Oil Temperature To Room Temperature
Tuning Oil Temperature to Room Temperature (or Machine Temperature) To tune the oil temperature to the room temperature (or machine temperature), the following four types of operation settings are available. Operation mode: 3 Tuning the inlet oil temperature the room temperature ∗... -
Page 24: Cooling Oil At Constant Capacity (%)
Cooling Oil at Constant Capacity (%) Cooling oil at a constant capacity (%) Operation mode: 9 With the above operation setting, the Oil Cooling Unit executes cooling operation according to the specified capacity command (%). Oil temperature control is disabled. The capacity setting range is 0 to 100%. -
Page 25: Monitor Items
Monitor Items When the “Monitor mode” is selected, the following items can be checked. Description Note ∗1 Machine temperature [Th5] ∗1 Outlet oil temperature or returned oil temperature [Th2] ∗1 Room temperature [Th3] ∗1 Inlet oil temperature [Th4] ∗1 Pump outlet oil temperature [Th10] ∗1 T (Th4–Th2) Capacity command value (%) -
Page 26: Timer Operation
Timer Operation With the “ON” timer, the Oil Cooling Unit can be started after elapse of a desired time. This mode can be used to warm up the main machine. The operation start time setting range is 0 to 99 hours (in one hour steps). ∗... -
Page 27: Additional Setting Functions
Additional Setting Functions You can additionally set up the following functions by setting the parameters of the Oil Cooling Unit. Additional setting functions Auto-tuning: Automatically sets up the parameters appropriately for the system. page Temperature range warning: Activates warning output when oil temperature exceeds preset temperature range. page Alarm/warning output logic: Outputs signal from Oil Cooling Unit to main machine. - Page 28 Parameter setting procedure You can set the parameter that enables the additional setting functions of the Oil Cooling Unit. For description of the additional setting functions and parameter list, refer to page Setting procedure 1. Select the parameter setting mode. Operation Data number Data display...
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Page 29: Setting Additional Function
Setting Additional Function —“Temperature range warning” Outline of the function • As an additional function of the Oil Cooling Unit, you can set up the “Temperature range warning” function. This function allows you to specify a desired temperature range within the Oil Cooling Unit operating range. When the control temperature exceeds the preset range, the unit informs you of the “Temperature range warning”... - Page 30 ∗ Enter Group B (page Description on parameter settings (Group A) ) before Group A, so that the temperature range warning is not activated during setup. In this section, set the following parameters by using three digits (first, second and third digits) of each parameter on the control panel data display.
- Page 31 Description on parameter settings (Group B) In this section, set the following parameters by using three digits (first and second digits, and first decimal place) of each parameter on the control panel data display. • “Temperature range warning temperature setting” (Use the first and second digits.) •...
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Page 32: For Temperature Control Improvement
For Temperature Control Improvement —“Auto-tuning mode” ∗ To use the Oil Cooling Unit in normal conditions, this function is not required. Outline of the function Depending on the system of the main machine, problems of “unstable temperature control” or “slow response in temperature ∗... - Page 33 Operation flow Keep pressing these keys simultaneously for two seconds. 1. Starting auto-tuning Cancel Normal mode (Original operation mode) 2. Step: 0 (Checking tuning conditions) Cancel Normal mode Cancel Error (Original operation mode) (Original operation mode) Normal 3. Step: 1 (Operation for stabilizing initial status) Cancel Normal mode (Operation at 0%...
- Page 34 [Note] 1. When starting auto-tuning, make sure that the oil temperature is nearly equal to the room temperature (in stable condition). Leave the main machine under no load (stopped). 2. If the remote signal turns OFF or an alarm is activated during execution of auto-tuning, an error occurs (auto-tuning cannot be executed), and the corresponding error message appears.
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Page 35: Alarm/Warning Output Logic
Alarm/Warning Output Logic The Oil Cooling Unit can output an operation status signal to the main machine through wiring to the signal terminal block and parameter setup. 1. Connect the required signal cable to the signal terminal block. (For the connecting method, refer to “Connection of external output contact” on page 2. -
Page 36: Optional Parts
1 · 25-3 temperature tuning 27.5 control (embedded in Lead wire R1/8 AKZ8–OP–K10 (10 m) machine body) AKZ8 series AKZJ8 series For machine Round terminal AKZ8–OP–A5 (5 m) DB619-122 or equivalent 1 · 25-3 temperature tuning control (attached to machine... -
Page 37: Returned Oil Temperature Control
AKZ8–OP–Y5 (5 m) For returned oil DB619-121 or equivalent SXH-001T-0.6 temperature control 27.5 AKZ8 series (Mounted to main machine oil piping) Lead wire R1/8 AKZ8–OP–Y10 (10 m) Characteristics of thermistor: Resistance R25 (resistance at 25˚C) = 20 kΩ, Tolerance: ±2%... -
Page 38: Communication With Main Machine
Optional Parts Communication with main machine When this optional board is mounted to the Oil Cooling Unit to connect this unit to the main machine: 1. You can change the operation mode and operation setting from the main machine. 2. You can read the Oil Cooling Unit alarm code and temperature data (machine temperature, room temperature, inlet oil temperature, outlet oil temperature, temperature difference between inlet and outlet, and inverter frequency data) from the main machine. -
Page 39: Maintenance/Inspection
Maintenance/Inspection Daily maintenance/inspection • Oil pollution causes a fault or shortened service life of the pump. Use thorough caution about oil pollution to maintain the pollution degree at NAS10 or lower level. • Keep a normal oil level in the oil tank. Make sure that the oil does not contain air bubbles. •... -
Page 40: Troubleshooting
When the Oil Cooling Unit does not work well, first check the following points. If the problem persists, contact DAIKIN Contact Center with information on the following 1), 2) and 3) items. (For phone/fax number and address of DAIKIN Contact Center, see the back cover.) 1) Machine name (Full Model No.) -
Page 41: When An Alarm Is Activated
3) The air filter is clogged, or the condenser is dirty. Clean the air filter. (See “Maintenance/Inspection” on page 4) Any factor other than the above Contact DAIKIN Contact Center. Compressor high temperature 1) The oil temperature or room temperature Use the unit within the specified operating range. - Page 42 If the exhaust air temperature is almost equal to the room 5) The refrigerant gas has leaked. temperature regardless of the compressor operation, it is possible that the refrigerant gas has leaked. Contact DAIKIN Contact Center. 1) The pump outlet oil temperature thermistor Check the wiring of the relevant thermistor.
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Page 44: Pim00116C
Oil Hydraulic Equipment Osaka Office DAIKIN Esaka Building, Tarumi-cho 3-21-3, Suita, Osaka, Japan 564-0062 TEL : 81-6-6378-8764 FAX : 81-6-6378-8738 E-mail Address: hyd_eco@daikin.co.jp Home Page: http://www.daikin.co.jp PIM00116C (0809)
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