3 Operation / Shutdown
3
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1
3 Operation / Shutdown
Caution
Only properly trained and qualified personnel are allowed to perform operation/shutdown
of the equipment.
3-1
Check points before operation
Before trial run, check the following points:
•
Installed Conditions:
By visual inspection check that the equipment is level.
Make sure the equipment is tied down with anchor bolts.
Do not place heavy objects on the top of the equipment. Make sure piping does not add weight to
the equipment.
•
Power cord, and the ground should be connected firmly.
•
Drain tube should be connected correctly.
•
Make sure the piping for compressed air is connected correctly.
•
Make sure the ball valve located next to the auto drain opened.
3-2
Operation
Start operation according to the procedure below.
•
Turn on the breaker of the main power supply. Then, turn ON the ON/OFF switch.
•
The lamp will light up. Few minutes later, the cooling fan will rotate and hot air will be exhausted from
the ventilation grille.
Location of the ventilation grille: Right Side
•
Open the IN/Out side valve slowly. Make sure the bypass valve is completely closed. Confirm there
are no air leaks.
•
Depending on the condition of compressed air or ambient temperature, the cooling fan sometimes
alternates between start/stop at the beginning. Then, the refrigerant compressor will start and the
pointer of the evaporating temperature will indicate in the green zone. If the pointer indicates higher
than the green zone, refer to “Chapter 5 Troubleshooting.”
•
After running for a while, moisture will be discharging from the drain tube automatically.
Caution
Avoid frequent On/Off operation, which may cause problems.
The auto drain used for the equipment has a structure that closes the valve with air
pressure higher than 22psi
（
0.15MPa
）
. Therefore, until the pressure increase, air will be
emitting from the drain outlet at the start of opening the “IN” valve. Keep in mind that
sometimes the pressure cannot increase due to under-sized air compressor.
