g. Electrical Safety.
(1) Equipment producing a "tingle" will be reported promptly for repair.
(2) Keep the use of extension cords to a minimum and the cords as short as possible. Be sure insulation and
wire size are adequate for the voltage and current to be carried.
(3) If it is necessary to work on "live" electrical equipment, the person doing so must be fully knowledgeable
and have a second person present who is trained in first aid. Never work on "live" equipment alone.
(4) Work on electrical devices should be done after the power has been disconnected or shut off, and suitable
precautions taken to keep the power off during the work.
(5) Wear safety glasses or a face shield where sparks or arcing may occur.
(6) Never use metallic pencils or rulers, or wear rings or metal watchbands when working on electrical
(7) Avoid using or storing flammable liquids near electrical equipment.
2-9. WATER BATH AND ELECTRIC OVEN CABINET.
a. Component Items. The water bath and electric oven cabinet (fig. 2-10) contains the thermostatically controlled
constant temperature water bath and thermostatically controlled electric oven, permanently mounted on the elevating
platform. This cabinet also contains miscellaneous items, such as rubber tubing and burners. A stainless steel
collapsible laboratory stool (fig. 2-11) is sometimes mounted on the rear of the left door.
Before starting operation, make certain that elevating platform is securely locked in the raised
(1) Water Bath.
(a) Connect bath to electric source; fill bath with water to desired level, and insert suitable thermometer
in space provided at top of bath.
(b) Push toggle switch to ON position, and set temperature control knob for desired temperature.
(c) Make certain bath overflow is connected to drain.