15
New Brunswick Scientific
User’s Guide
CAUTION!
Before making electrical connections, verify that the supply voltage
matches the voltage and the power requirements marked on the electrical
specification plate (located on the rear panel of the cabinet) and the
control schematics supplied with the unit.
WARNING!
High voltage. Always make sure this equipment is properly grounded.
4.5.2
Water and Drain Connections
CAUTION!
Make sure all utility connections have been securely made before
connecting to
WATER-IN
and before turning on the main water supply.
Failure to observe these precautions will result in water leaking out of
the unconnected hoses and the cabinet.
The water inlet and drain connections are located on the left side of the control
cabinet
(see Figure 1f, a detail from Figure 1d)
.
Water pressure should be
from 5 to 10 PSIG, with 50
μ
m filtration.
7.5-foot lengths of tubing are
supplied with an open end for water in and the drain and with quick-connect
fittings to attach to the cabinet. The tubing (NBS part number P0740-1631)
has an inner diameter of ¼ inch and an outer diameter of 7/16 inch.
Figure 1f: Water Connections
For the EXHAUST CONDENSER IN & RETURN
connections, 3-foot lengths of 3/16-inch ID
silicone tubing (NBS part number P0740-2505)
are pre-assembled with a quick-connect on one
end, to be connected to the cabinet, and open
at the other end to connect to the exhaust
condenser’s inlet and outlet. The connection
points should be secured with cable ties.
For the COOLING LOOP IN & RETURN
connections, 3-foot lengths of 3/16-inch ID silicone
tubing (NBS part number P0740-2505) are
pre-assembled with a quick-connect on one end, to
be connected to the cabinet. The other end is to
be connected to (1) the cooling coil’s inlet and
outlet on the headplate of heater blanket vessels or
(2) to the water inlet and outlet lines coming from
water jacketed vessels. The connection points on
the open ends should be secured with cable ties.
BE SURE TO READ THE
CAUTION
ON THE NEXT PAGE.
