101
Thermo Fisher Scientific
User Guide STP420D/STP420ES
troubleshooting and Errors
Opening Chambers During Power Failures
4. ‘Emergency release’ the rotary chamber lid:
a. A guiding plate and an external emergency release screw. A key
must be inserted through the guiding plate and into the head of
the screw. The key must fit the screw in order to turn it around.
Once the key is inserted into the screw head, the screw can be
unscrewed. A slight resistance and a whirring sound indicate
that the key is moving the screw.
b. Turn the key to the left until you can open the lid.
Note!
Turn the key counter-clockwise only.: Try to open the chamber after each
rotation of the key.
W
hen
the
liD
opens
Do
not
continue turning the key when the lid has unlocked.
Figure 45b.
Placing the hexagon key for an emergency release of the rotary
chamber lid.
Figure 45a.
Placing the hexagon key for an emergency release of the rotary
chamber lid.