6
2.4
CONNECTION TO VAPOR TRAP AND VACUUM SOURCE
A
B
C
D
(A)
Concentrator Vacuum/Vapor Port: Connect this 1.5” I.D. Teflon
®
hose to the
polypropylene screw cap of the vapor trap. Use clamp and centering ring to secure
the tubing to the concentrator.
(B)
Automatic Valve Port: Connect this 1/2” I.D. Teflon
®
tubing to vapor trap and to
the solenoid.
(C)
Vacuum Line: Coat fitting with a thin film of vacuum grease.
Connect 1/2” I.D. vacuum tubing(not included, recommended: M30-0007-03 Tygon
vacuum tubing) to this fitting and the other open end to the vacuum pump.
(D)
Power Cord Main Outlet.
2.3
ROTOR INSTALLATION
1. Lower the Universal Rotor* (UPR-4A) onto the assembly (SUMAX400) by
visually aligning the pin on the drive shaft of the assembly with the groove
on the bottom of the rotor.
2. Rotate the rotor by hand to ensure alignment of the pin with the groove.
3. Secure the rotor assembly by screwing the retaining knob into the drive
shaft above the rotor.
4. Tighten it firmly but not excessively.
* When using a Thermo standard disk rotor (see section 3.7 for selection of
fixed-angle rotors) instead of the Universal Rotor (UPR-4A), a Rotor Adapter
Attachment (RAD200) is required. Attach the adapter to the upper magnetic
assembly (SUMAX400) before using the standard disk rotor.
CAUTION: Only UPR-4A Universal Rotor or other Thermo rotors should be
used in the SC250 Express. Do not use other rotors even if they seem to fit
the instrument.
