GENERAL DESCRIPTION
Page 2-1
SYSTEM DESCRIPTION
MC-Series Temperature chambers are pre-engineered chambers designed to provide an
environment with speci! c temperature (humidity) conditions. The standard MC-model is
composed of three basic sections: 1. Control section, 2. Chamber section, 3. Refrigeration/
Heating section. Optional equipment includes, but is not limited to: 4. Pen Recorders, 5.
High/Low Limit.
The MCB-1.2 and MC-3 (230V and 400V) chambers have a standard temperature range
of -94ºF to +375ºF (-70ºC to +190ºC). The MC-3 (115V) has a standard temperature
range of -85°F to +375°F (-65°C to +190°C). The chambers are designed to operate
in a commercial environment, i.e. temperature of +75°F +/- 10°F (+23°C +/- 6°C),
maximum dew point of 55°F (12.8°C), and an altitude of 7,000 ft. (2133.6M). Refer to the
speci! cations at the end of this section for additional information. The single stage model
has a temperature range of -22ºF to +375ºF (-30ºC to +190ºC).
CONTROLLER
The standard controller on MC Series chambers is EZT-430S. Operating instructions
for the EZT-430S are found in the EZT-430S User’s Manual on the digital media that
accompanied this chamber. The Watlow F4 controller is an option. The EZT-570S is an
option on the MC-3 only. The User Manuals for both the standard and optional controllers
are found on the digital media that accompanied the chamber.
CHAMBER
Chamber Interior
MCB-1.2 (115V and 230V)
The chamber interior consists of the workspace and the top component area,
separated by a stainless steel plenum. A probe bracket is attached to the upper
right corner of the grill on the plenum cover. The bracket contains the probes for
the controller and recorder (if required). The top area behind the plenum contains
the refrigeration evaporator, heater, and evaporator fan. Refer to Figures 1, 2, and
3.
MC-3 (115V, 230V and 400V)
The chamber interior consists of the workspace and the back plenum area
separated by a stainless steel panel. A probe bracket is attached to the upper left
corner of the grill on the plenum cover. The bracket contains the probes for the
controller and recorder (if required). The back plenum contains the refrigeration
evaporator, heater, and evaporator fan. Refer to Figures 4, 5, and 6.
Chamber Exterior
Fiberglass insulation is used with a high temperature binder for temperatures up
to 500ºF (260ºC). The cabinet is constructed with minimal mechanical contact
between the liner and the exterior to reduce conductive heat losses and minimize
condensation on the exterior cabinet.
An optional multiple-pane window assembly in the door of the chamber allows
viewing of the chamber interior during operation. The window is constructed
of tempered glass panes to assure frost-free viewing during low temperature
chamber operation. Under certain ambient conditions, it may be normal to see
some condensation around the outer window frame area during low temperature
operation.
Condensation on exterior
sur fac es is nor mal
when operating at cold
temperatures for an
extended period of time.
NOTE
!
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