Section 1 - Receiving
1.1 Preliminary Inspection
This item was thoroughly inspected and carefully packed
prior to shipment. All necessary precautions were taken to
ensure safe arrival of the merchandise at its destination.
Immediately upon receipt, before the unit is moved from the
receiving area, carefully examine the shipment for loss or dam-
age. Unpack the shipment and inspect both interior and exterior
for any in-transit damage.
1.2 Visible Loss or Damage
If any loss or damage is discovered, note any discrepancies
on the delivery receipt. Failure to adequately describe such evi-
dence of loss or damage may result in the carrier refusing to
honor a damage claim. Immediately call the delivering carrier
and request that their representative perform an inspection. Do
not discard any of the packing material and under no circum-
stances, move the shipment from the receiving area.
1.3 Responsibility for Shipping Damage
For products shipped F.O.B. Marietta, Ohio, the responsi-
bility of Thermo Electron Corporation ends when the merchan-
dise is loaded onto the carrier’s vehicle.
On F.O.B. Destination shipments, Thermo and the carrier’s
responsibility ends when your Receiving Department personnel
sign a free and clear delivery receipt.
Whenever possible, Thermo will assist in settling claims
for loss or in-transit damage.
Section 2 - Installation and Start-Up
2.1 Location
Locate the unit on a firm, level surface in an area of mini-
mum ambient temperature fluctuation. A minimum of 12 inches
clearance is required at the top of the incubator and a minimum
of 3 inches clearance is required at the rear of the incubator to
facilitate adequate airflow around the refrigeration system.
2.2 Attaching the Drain Connections
The cabinet’s 3/8” MPT drain line connection is located on
the rear (lower left side) of the cabinet.
To install the drain connection, push a piece of 3/8” ID tub-
ing onto the cabinet drain connection and direct the tubing to a
convenient drain. Install a hose clamp on the tubing, if desired.
2.3 RS-232 Output Interface and Remote Alarm
Connector
The Model 3920 is equipped with an RS-232 Serial
Communication Interface for the remote transmission of tem-
perature data. The remote alarm connections are also included
on the terminal strip.
Figure 2-2
Terminal Pin Descriptions, RS-232 (1-6) and
Remote Alarm Connections (7-9)
Model 3920__________________________________________________________________Installation and Start-Up
2 - 1
1 2 3 4 5 6 7 8 9
Terminal Strip Connections
Temperature
RS 232
Remote Alarm
(Shown in alarm)
T
R
AN
SM
IT
CO
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M
ON
CO
M
M
ON
N.
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N.
C
.
RE
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