Option Card Installation - Ametek Thermox 2000 ATEX Series User Manual

3-42 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX

Option Card Installation

This section shows you how to add option cards to the control unit. This
includes the following option cards:
Auto Calibration Card - requires remote calibration unit
•
This section also shows you how to access the display module and power
supply/keypad module on the control unit in case you need to replace
these modules or change a component in them (for example, install new
software).
Remove power from the control unit before working on it.
!
CAUTION
Removing display module or
power supply/keypad module
This section describes how to remove or replace the display module or
power supply keypad module on the control unit (see Figure 3-24):
1. Open the access door below the display module (hinges down).
2. Pull on the handle of the power supply/keypad module and remove
this module from the control unit (it slides out). Note that the power
supply/keypad module must be removed before you can remove the
display module.
3. Pull on the display module handle to then pull out the display module.
4. Reverse these steps to reinstall the display module or power supply/
keypad module.
Should you need to replace fuse F1 on the display module, it is a
Littlefuse type 273 microfuse or equivalent, voltage rating: 125V
AC, ampere rating: 50 mA.
NOTE
Should you need to replace fuse F1 on the wiring card, it is a
Littlefuse type 273 microfuse or equivalent, voltage rating 125V
AC, ampere rating: 250 mA. See the beginning of this Wiring
section for the location of the wiring card on the controller.