Despatch P1400+ Temperature Controller - Manual (Page 13)

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3.3 Preparing to Install or Remove Options Modules
CAUTION:
Before removing the instrument from it’s housing, ensure that all power has been
removed from the rear terminals.
1. Remove the instrument from its housing by gripping the side edges of the front panel (there is
a finger grip on each edge) and pull the instrument forwards. This will release the instrument
from the rear connectors in the housing and will give access to the PCBs.
2. Take note of the orientation of the instrument for subsequent replacement into the housing.
The positions of the main and option PCBs in the instrument are shown below.
3.4 Removing/Replacing Option Modules
With the instrument removed from its housing:
1. To remove or replace modules into Option Slots 1,A or B, it is necessary to gently separate
the CPU and PSU PCBs. This is achieved by detaching the main boards (PSU and CPU )
from the front moulding by lifting first the upper and then lower mounting struts as shown.
This frees the boards from the front. If only Option slots 2 or 3 are to be changed, this stage
is not required as these slots are accessible without separating the main boards from the
front.
Figure 5. Location of Option Modules - 1 /
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DIN Instruments
Option Slot 2
Option Slot A
Option Slot B
Option Slot 3
Option Slot 1
Mounting Struts