3A.4 Component Replacement; Replacement Of Nylon Spacers; Parts List - Relay Output Board 24680504 - Emerson Hydrastep 2468 series Operating Manual

Hydrastep 2468CB and 2468CD Manual

3A.4 COMPONENT REPLACEMENT

The relay board contains no replaceable circuit components, failure of the board requires
replacement of the entire board. The only component that can be replaced is the nylon spacer.
3A.4.1

REPLACEMENT OF NYLON SPACERS

The replacement of nylon spacers fitted to the output board requires access to the non-
component side of the PCB.
Note: Spacers will only be fitted on the output board if a second output board is to be fitted
or has been fitted.
The spacers are secured in their holes by nut and nylon washer. To carry out a spacer
replacement, the output board has to be removed from the input board. The procedure
adopted is:
1. Isolate the 2468 electronic enclosure from the power supply.
2. Gain access to the PCBs and undo sufficient connections for the removal of the output
board containing the defective spacer.
3. Remove the output board(s) by applying pressure
to the upper spring-loaded spigots and easing the
output board off its spacers and out of its Berg
plug/socket connection.
4. Undo the nut and washer securing the faulty
spacer and extract it from its hole, see inset
diagram.
5. Fit the new spacer in position, align correctly on
the board and secure firmly using the M4 nut and
nylon washer.
6. Refit the PCB(s) into the enclosure, re-connect
the PCB(s) as required and close the enclosure
cover. Re-apply the power.
3A.4.2

PARTS LIST - RELAY OUTPUT BOARD 24680504

The following list items are available as spare parts:
Item Description
Electrical:
Relay PCB assembly:
Socket 5K2 free (8-way)
Socket 5k3 free (8-way)
24685034
WARNING Mains voltages are present in this instrument when power
is connected. De-energise before opening front cover.
Part Number
24680504C
351508100
351503100
Relay Output Board Option
Item Description
Mechanical:
Spacer, nylon 15.9 LG
Washer, nylon
Nut, M4
Part Number
412012080
411999910
410031020
3a-15