Drain; Water Supply Requirements - Thermo Scientific MEGA-PURE 11A Water Still 677 Series Operating Manual And Parts List

Water Supply
Requirements
Thermo Scientific
We recommend one of the following options for supplying water to
operate your MEGA-PURE 11A water still.
Option #1
A single, untreated cold water supply. The supply must be capable of
providing a minimum of 26 gallons per hour at a pressure of 20-100 psi
and be located within 4 feet of the water still. You must provide a shut-
off valve and reducer as shown in Figure 2-3.
With Option #1, approximately 26 gallons of untreated water will be
used per hour in the cooling section of the still, 3 - 4 gallons of this
water will be used as boiler feed. Water connections are discussed in
"Pretreated Boiler Feed" section.
Option #2
An untreated cold water supply plus a source of reverse osmosis, dem-
ineralized or previously distilled water. The untreated supply must be
capable of providing a minimum of 26 gallons per hour at a pressure of
20-100 psi and be located within 4 feet of the water still. The treated
supply must be capable of providing 3 - 4 gallons per hour and be locat-
ed within 4 feet of the water still. You must provide a shutoff valve and
reducer at each water supply (see Figure 2-3). In addition, the optional
double solenoid valve kit (Catalog No. 440236) is required.
With Option #2, approximately 26 gallons of untreated water will be
used each hour for cooling. The second (treated) water supply of 3 - 4
gallons per hour will be used as boiler feed. Water connections are dis-
cussed in "Pretreated Boiler Feed" section.
Caution Do not use NaCl regenerated water softeners to supply boiler feed
as alkali attack will shorten heater life.

Drain

An open or vented drain located lower than the still is necessary to allow
for gravity flow. The factory supplies a 5 foot length of ½" I.D. vinyl
tubing for the drain.
Additional tubing may be purchased from your laboratory dealer.
s
11A Water Still
Section 2
Introduction
2-3