P20/54 T-SM47j
6.0 PART REMOVAL/ADJUSTMENT/
REPLACEMENT
6.1 GENERAL
6.1.1 This section has been split into the following sections
for easy reference, note safety warnings in section 4.0:
6.2 Table base and column covers
6.3 Table base components
6.4 Table column components
6.5 Table sections
6.6 Electrical components
6.7 Function tests after maintenance
6.8 Accessories
6.1.2 Within the text detailing a part replacement any
specific setting or adjustment is fully detailed. Each section
also provides specific details of any required lubrication
during assembly, the use of threadlock fluids and any
specific torque settings that should be adhered to.
Note: Conversion chart and conversion data for Torque
values in Appendix 1.
6.1.3 All replacement parts must be supplied by
Eschmann and note that this also includes all the nuts,
screws, roll pins, pivot pins etc. that are specified in the
‘Illustrated parts list’. Some of these are provided to a
specific standard (e.g. high tensile) and the use of ‘similar’
items could compromise the strength and therefore the
safety of the table.
6.1.4 All electrical components are non-repairable and
must be replaced with new Eschmann parts only, to
maintain the safety of the system. Replacement is usually
a self-evident procedure but ensure :
i Good wiring practice is observed and static
discharge procedures are adopted as applicable
when handling PCAs (printed circuit assemblies).
ii All wiring is replaced as found and secured away
from any moving parts using adequate quantities of
cable clips and restraints.
iii All fixings are replaced as found and no substitutes
are used.
iv The function checks detailed in this manual (section
6.7) are carried out on completion of any part
replacement.
6.1.5 After all procedures the table should be left clean
and in full working order (run function test detailed in 6.7)
to ensure safety and ensure the (Electrical safety checks)
in Appendix 4.
6.1.6 Before any part removal/replacement procedure
ensure the table is not connected to the mains. If mains
power is required at any time during diagnostic checks
ensure that appropriate safe working procedures for live
working are adopted (see section 4.5).
6.1.7 To avoid duplication of common procedures a cross
reference to the required part of the manual detailing the
procedure is provided where required. Note these sections
also contain assembly notes that must be followed.
6.1.8 All part numbers can be found in the Illustrated parts
list (Publication number T-IPL35 available from Eschmann
Equipment at the address on the inside of the front cover).
This Illustrated parts list should be available for reference
during part removal or replacement.
6.1.9 The locking catch for foot pedals can be external or
internal. Please check which type is fitted to the table and
follow the appropriate notes in the sections that follow. The
external catch is shown in Fig. 6.2a, item 20 and the internal
catch is shown in Fig. 6.2b, item 6.
5.1.9 Tables with a Serial Number prefix T2AC or later
have been increased in height by 5mm. Check that the
correct parts are fitted by referring to the Illustrated parts
list. Fig. 6.2b and Fig. 6.2c shown both configurations.
6.2 TABLE BASE & COLUMN COVERS
6.2.1 The removal, replacement and method of gaining
access behind the table covers, has been split into the
following sections for easy reference:
6.2.2 Base covers.
6.2.3 Access to column.
6.2.4 Telescopic covers.
6.2.5 Bellows.
For reference Fig. 6.1 shows the general arrangement of
all the cover components.
6.2.2 Base covers
CAUTION
Ensure the cable to both of the infrared PCA’s
are released before sliding the base covers
away from the base, see ‘v’ below.
6.2.2.1 Removal of base covers.
i Raise the height of the tabletop sufficiently to expose
the screws at the lower edge of the lowest telescopic
section where it joins the base covers.
ii Remove both foot pedals by releasing their retaining
screws, taking care not to loose the return spring
(spring only fitted if the pedal has an external catch).
iii Remove the button head screw from the end of the
long base cover and the countersunk screw from both
sides of the covers where they join at their lower edge.
iv Remove the two screws from the lower edge of each
side of the lowest telescopic cover (not the end face
screws).
Note: These screws differ in length and must be put
back as found (short 12mm to short trunk end, long
15mm to long trunk end).
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