Clean/Adjust Steam Generator - Thermo Scientific 3907 Operating Manual

| Service
Chapter 13
|
13-4 Model 3907 & 3948

Clean/Adjust Steam Generator

Depending upon the quality of water used in the humidification system, it may be
necessary to clean the humidity steam generator (P/N 1900190) more frequently than
once a year.
Materials Required:
6-foot stepladder
Flat and Phillips screwdrivers
11/32 Nutdriver or wrench
Laboratory disinfectant
9/16 Open end wrench
1/2 Open end wrench
Sponge & cleaning materials
De-energize all potential sources of energy to this unit and lockout/tagout their
controls.
1. Remove all contents from the environmental chamber, turn it off, and disconnect
from power source.
2. Turn off the valve supplying the sterile distilled water.
3. From the stepladder, remove the eight screws securing the top of the environmental
chamber cabinet.
4. When the steam generator has cooled, remove the four thumbscrews and wingnuts
(Figure 13-3).
wingnuts
wingnuts
Figure 13-3 Access to Steam Generator
water
water inlet
inlet
float
float wires
wires
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