Thermo Scientific Dionex, Operator'S Manual

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Dionex Integral Systems Operator’s Manual
76
Doc. 065250-06 03/2020
5.6 AE Ventilation Fan (Option)
The optional ventilation fan (P/N 068544) can be mounted on the side of the AE.
The fan runs continuously unless the AE power is turned off. (The fan is not
controlled by Chromeleon 7 PA.) When the fan is installed, the AE meets NEMA
12 requirements. Refer to
Installation Requirements and Customer
Responsibilities: Process Analytical Systems (Document No. 070186) for
mounting and connection instructions.
NOTE The AE ventilation fan cannot be installed if a NEMA
4X-equivalent enclosure is required.
5.7 AE Air Conditioner/Heater (Option)
The optional air conditioner/heater (115 Vac, P/N 068545; 230 Vac, P/N 069093)
can be mounted on the right side of the AE. The air conditioner/heater provides
closed system controlled air circulation for the AE and the LE (if included). The
air conditioner/heater has a capacity of 3000 BTU per hour. Refer to
Installation
Requirements and Customer Responsibilities: Process Analytical Systems
(Document No. 070186) for mounting and connection instructions.
When the air conditioner/heater is installed, a control box is located inside the AE,
on the upper wall. To operate the air conditioner/heater, turn on the power switch
on the control box. The blower turns on and runs continuously unless the power is
turned off.
The air conditioner/heater controller is set at the factory with a high set point
temperature and hysteresis to minimize short-term temperature cycling from the
air conditioner (which can adversely affect the baseline). The air conditioner/
heater controller turns the air conditioner or heater on and off at the following
temperatures:
•
The air conditioner turns on when the internal AE temperature reaches 35 °C.
•
The air conditioner remains on until the internal AE temperature reaches
20 °C. The air conditioner then turns off and remains off until the internal AE
temperature again reaches 35 °C.
•
If the ambient temperature is colder than usual and the internal AE
temperature reaches 15 °C, the heater turns on. The heater is used to regulate
the temperature between 15 °C and 17 °C until the ambient temperature is
high enough to maintain the internal AE temperature above 17 °C.