BÜCHI Labortechnik AG
Installation | 5
Operation Manual Recirculating Chiller F-305 / F-308 / F-314
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5.5
Filling and draining the coolant tank
3
1
1
2
Fig. 16: Filler and drain tap for coolant (example shows F-305)
1 Coolant filler cap
3 Drain tap for coolant tank
2 Tank overflow
Filling with coolant
NOTICE
Risk of property damage if incorrect coolant used
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When selecting the coolant, take account of the chiller temperature setting.
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Make sure that the coolant is suitable for the desired chiller temperature setting,
especially with regard to the freezing point.
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BUCHI recommends a mixture of ethylene glycol and water with a ratio of at least
40:60 with a freezing point of -16 °C.
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Do not use silicone oil.
Precondition:
R
Device is not in operation and has cooled down.
R
Recirculating Chiller is not connected to any other device.
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Remove the coolant filler cap (1) and pour coolant into the filler neck.
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Keep an eye on the fill level indicator on the front of the Recirculating Chiller. In
the case of large cooling systems with long tubing runs and/or several condensers
connected in series, fill the coolant tank to the maximum level. See also Chap-
ter 3.2.3 "Fill level indicator", page 12.
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Replace filler cap on coolant filler neck.
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(Re-)connect other devices to the Recirculating Chiller. See Chapter 5.4.3 "Con-
necting the coolant tubing to the F-3xx", page 25.
Draining the coolant tank
Precondition: