NuAire NU-5510, Руководство по эксплуатации и обслуживанию, Страница: 5 / 64

OM0135 5
2.0 Performance Parameters and Features

Both the interior and exterior of the DHD Autoflow are constructed of 16-gauge material. The interior
is highly polished type 304 stainless steel, using crevice-free construction. All exposed edges are
deburred to insure no sharp edges. The exterior is cold rolled steel finished in a powder coated
polyurethane finish, which is resistant to chemicals and easily cleaned using mild household
detergents.

The DHD Autoflow's microcomputer temperature control system has two temperature sensors located
in the chamber. The temperature sensors compare the values to a set point and execute a differential
control algorithm that energizes a solid-state switch, supplying power to the heaters.

Up to 17 shelves can be placed inside the chamber (4 supplied).

Space-age high temperature material is used to insulate the inner chamber walls.

Foil heaters are directly attached to the chamber walls and the top and bottom surfaces of the inner
chamber.

Incubators can be stacked for space saving, and can still be serviced from the front.

Easily removable inner chamber plenum shelves and rails for sterilization.

Most electronics, motors, pumps, and valves are fully accessible from the front of the unit.

A CO
2
sample port is provided on the front panel to check the concentration of CO
2
in the chamber.

The CO
2
percentage is controlled by a solid-state gas infrared sensor, which provides accurate
monitoring of CO
2
affected minimally by changes in temperature or humidity levels in the chamber.

Automatic recovery of the CO
2
level after a 1minute door opening to 5.0 + 0.2% is within a 4-1/2
minute period.

The outer door includes an internal radiant heater in order to minimize condensation on the inner glass
door. A magnetic outer door gasket helps to insure a tight seal against the cabinet.

The inner glass door is 3/16” tempered with smooth-ground edges and seals are tight against a U-
grooved silicone rubber gasket. The door latch is cam action. An all solid-state magnetic switch
monitors door motion.

All control electronics are protected with a circuit breaker that may trip at 110% of loading rating but
will trip at 145% of load rating in less than 2 seconds. Should the circuit breaker open (pop-out button
will appear), merely depress to reset.

The Incubator has factory-installed adjustable leveling legs to compensate for uneven laboratory
surfaces.