Daikin AKZ8 Series, Instruction Manual

Page: 16 / 44

14
Bef
ore
Operation
Handling
50
40
45
30
20
10
5 10 20 30 40 50
5
Room temper
ature
Oil Cooling Unit inlet oil temperature (˚C)
(˚C)
Allo
w
ab
le oper
ating r
ange
Before Operation
Before operating the Oil Cooling Unit, check the following items:
Operating environment
1
• 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).
• The operating range is limited. Make sure that the operating conditions are within the following range.
(Note: If this unit is operated out of the specified range, the protection devices may be activated, or the service life may be shortened.)
Installation
2
• Check if the unit has been securely fastened with bolts or foundation bolts.
• Check for any obstacle that blocks air intake or exhaust flow.
(Do not put an obstacle within 500 mm from the air intake/exhaust port.)
Electric wiring
5
Applicable oil
4
• Check if the cable size is larger than the specified size. (Refer to “ Wiring procedure ” on page .)
• Check if the ground cable is securely connected.
• Be sure to use a commercial power supply. Using an inverter power supply may result in burnout.
• Check if the power supply voltage is within the following range:
50 Hz...........200 V ±10%
60 Hz...........200/220 V ±10%
• Check if a circuit breaker is provided exclusively for each Oil Cooling Unit.
Oil piping
3
• Check the oil piping for leak.
• Check if an appropriate quantity of oil is filled in the tank. (Never run the pump without oil. Otherwise, the oil pump may be damaged.)
• Check if the main machine oil piping is not blocked (fully closed). (If the unit is operated with the main machine oil piping
blocked (fully closed), the oil temperature rises, causing an alarm.)
• Check if the pressure loss is within the specified range. (Refer to “ Precautions for Installation ” on page .)
• Check if the main machine oil piping is equipped with a flow switch.
(To protect the main machine, it is recommended to mount a flow switch.)
• The Oil Cooling Unit is intended for lubrication oil and hydraulic oil (mineral oil). (Oils that belong to Class 3 petroleum and Class
4 petroleum among Class 4 dangerous substances prescribed by the Fire Service Law, and correspond to Discoloration No. 1
under “Petroleum Products–Corrosiveness to Copper–Copper Strip Test (JIS K2513)” and the pollution degree of NAS Class 10.)
The following oils (liquids) cannot be used for this unit.
1. Flame-resistant hydraulic oil (Phosphoric ester / chlorinated hydrocarbon / water + glycol / W/O, O/W emulsion type oils)
2. Water and water-soluble liquids
3. Chemical and food liquids
4. Cutting oil (fluid) and grinding oil (fluid)
5. Fuels (kerosene, gasoline, etc.)
Before operating the Oil Cooling Unit, be sure
to read through this instruction manual and
understand the contents of this manual.
CAUTION
5
8
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