10
OPERATION
5.1
Check power supply against unit serial plate. They must match.
5.2
Plug service cord into the grounded electrical outlet. The water jacket must be
filled. See Section 2.6 for instruction. Push the power switch to the ON position
and turn the Overtemperature Thermostat to its maximum position, clockwise
using a coin or flat edged tool.
WATER RECOMMENDATIONS FOR USE IN WATER JACKET INCUBATORS
The addition of a dis-similar metal anode in Water Jacket incubators will allow the
use of good-quality tap water to fill the Jacket. The anode is located in a
threaded port near the fill port on the rear of the unit. (diagram). The anode will
dissolve as it is in contact with mineral salts or dissolved gasses in the tap water.
The anode should be removed and checked for erosion every year. When the
anode appears to be over 50% eroded, a new one should be purchased form
Sheldon Mfg., Inc. (Replacement Part #0260500)
Tap water with a hardness of more than 30 parts per million (PPM) or 1.5 grains
per gallon (GPG) will require assessment of the anode on a yearly basis.
Dissolved gasses should be no more than 120 PPM or 7 GPG. The Ph of the
water should test to between 6.0 and 8.5.
When in doubt, it is advisable to use DISTILLED WATER ONLY.
5.3 Humidification:
Humidification of the unit is achieved by evaporation of water
from the humidity pan placed in the bottom of the incubator. By filling this
stainless steel reservoir pan with DISTILLED WATER and allowing this water
supply to heat and evaporate, near saturation humidity is obtained. Do not use
plastic, glass or other metals. Only 300 series stainless metals are acceptable
for this reservoir pan. Do not use corrosive chemicals, including copper sulphate
or chlorine, in the pan or chamber as damage may occur.
Use Distilled Water
Only. DO NOT use Deionized Water!
Use of disinfecting chemicals in the chamber can change the surface tension of
the reservoir water thus preventing evaporation and proper humidification of the
chamber. Water in the pan should be changed and the pan cleaned at least
once a week to help control contamination and maintain proper surface tension.
Section
5
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