Yamato Scientific BBL300 Low Constant Temperature Water Bath - Manual (Page 10)

7
Before Using This Unit
Installation Procedure
1 Decide the place to put the device on.
Confirm that four rubber feet of the device are on a flat place.
2 Check the drain cock.
Confirm that the drain cock on the backside of the
unit is in the "Close" position (perpendicular to the
cock).
Confirmation of overflow.
Connect the attached hose for overflow and
prepare a container etc. separately.
3 For external sealed unit connection
(The package does not include any circulation hose. Please prepare it yourself.)
Connect the connection port of the main part to the circulation route of the external sealing
system so that there may be no leakage. Connect the hose to the return port (IN) and discharge
port (OUT) of the main part. The diameter of a hose nipple isφ10.5 ㎜. Refer to the following
figure.
4 Precautions about the circulating path
• Carefully check the direction of circulation, and connect the hoses properly. Improper
connection results in an accident or malfunction of the unit and the circulating path.
• Minimize the length of the circulating path. If resistance inside the piping increases, the quantity
of circulating fluid decreases, resulting in lower cooling efficiency. For the capacity of the
circulating pump, see "Flow Rate and Head (reference data)" on page 40.
• Check the circulation capacity and withstand pressure of the circulating path. Excessive
circulation or pressure may result in an accident or malfunction.
• Do not connect any powered unit or a unit with a motor to the circulating path. It may cause an
accident or failure.
• When changing flux, execute the operation slowly. A rapid change of flux may damage the
durability of the pump.
• If the unit is to be connected to a circulation unit installed in a higher place than it, beware of the
backflow of the circulating fluid. If the fluid flows back, it may overflow the water bath of the unit.
Add a valve to the circulating path or take other proper measures to prevent a backflow.
本体
外部装置（密閉系）
戻り口
(IN）
吐出口
（OUT）
断熱ホース
断熱ホース
BBL unit
Return
(IN)
Discharge
(OUT)
Insulation hose
Insulation hose
External unit
(sealed system)
Position during operation
Close
Position during draining
Open
Overflow
Drain cock