6
2. Before using the unit
Precautions on installation
10. Do not splash water on the unit
11. Do not use well water
Never splash water on electric
components to avoid possible electric
leakage or an electric shock.
Use distilled water or pure water to use in
the testing bath. Well water or low quality
water will make scale or stone
accumulate inside the heater and the
pump, which compromises their
performance or causes a malfunction.
◎
○
×
Distilled
water
Pure water
Tap water Well water
12. When you use a silicon oil
You cannot use silicon oils on any models other than
BF600, which supports silicon oils. Using a silicon oil on a
model other than BF600 will subject the stirrer motor under
burden leading to overheat or a malfunction. Use a silicon
oil when the set temperature is 80
℃
or higher.
Use a silicone oil whose viscosity is 50cst or less. If
you use a silicon oil of a high viscosity, preheat to lower
the viscosity before using BF600.
Select a silicone oil designed especially for heat medium and with an open-system silicone oil
(heat-resistance dimethyl silicone oil) viscosity of 100
㎜
2
/s (cSt).
Recommended silicone oil
：
Operating temperature is 200
℃
or lower
Toshiba Silicone TSF458-50
Operating temperature: 200
℃～
270
℃
Toshiba Silicone
TSF458-100
C
h
ar
a
ct
e
ris
tic
s
of
s
ilico
n
e
o
ils
Manufacturer
Toshiba Silicone
Toshiba Silicone
Recommended temperature
200
℃
or lower
200
℃～
270
℃
Product name
TSF458-50
TSF458-100
Outer appearance
Transparent light yellow Transparent light yellow
Specific gravity(25
℃
)
0.961
0.963
Viscosity(25
℃）㎜
2/s
（
cSt
）
50
100
Volatile content (150
℃，
24h)
％
0.3
0.3
Viscosity temperature coefficient 0.59
0.59
Ignition point (
℃）
325
342
Pour point (
℃
)
-50
℃
or lower
-50
℃
or lower
Viscosity increase rate (300
℃，
168h
）％
40
35
The degradation rate (viscosity change) of a silicone oil will differ depending on the
temperature used.
In particular, the TSF485-100 that is used at over 200
℃
, viscosity shows almost no changes
at 200
℃
, the normally operated temperature and about 1000 hours at 250
℃
and about 100
hours at 270
℃
.
Contact the silicone oil manufacturer for details.
