JULABO SE-Z Heating Circulators - Manual (Page 21)

HE / SE
21
Return flow safety device
If the liquid levels in the circulator bath and the external system are at
different heights, overflowing must be prevented after the power has
been turned off.
Flood hazard!
For this reason, shut-off valves can be integrated in the loop circuit.
Order No. Description
8 970 456 Shut-off valve (suitable up to +90 °C)
8 970 457 Shut-off valve (suitable up to +200 °C)
5.3.1. Tubing
Recommended tubing:
Order No. Length Temperature range
8930008 1 m CR
®
tubing 8 mm inner dia. -20 °C to 120 °C
8930012 1 m CR ® tubing 12 mm inner dia. -20 °C to 120 °C
8930108 1 m Viton tubing 8 mm inner dia. -50 °C to 200 °C
8930112 1 m Viton tubing 12 mm inner dia. -50 °C to 200 °C
8930410 1 m Insulation for tubing 8 mm inner dia. -50 °C to 100 °C
8930412 1 m Insulation for tubing 12 mm inner dia. -50 °C to 100 °C
8 930 209 0.5 m
8 930 210 1.0 m
8 930 211 1.5 m
8 930 214 3.0 m
Metal tubing, triple insulated, M16x1 -100 °C to +350 °C
8 930 220 0.5 m
8 930 221 1.0 m
8 930 222 1.5 m
8 930 223 3.0 m
Metal tubing, insulated, M16x1 -50 °C to +200 °C
Warning: Tubing:
At high working temperatures the tubing used for temperature application and cooling
water supply represents a danger source.
A damaged tubing line may cause hot bath fluid to be pumped out within a short time.
This may result in:
• Burning of skin
• Difficulties in breathing due to hot atmosphere
Safety recommendations
• Employ suitable connecting tubing.
• Make sure that the tubing is securely attached.
• Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
• Regularly check the tubing for material defects (e.g. for cracks).
• Preventive maintenance: Replace the tubing from time to time.