Steris Amsco 3085 SP, Maintenance Manual

Page: 109 / 228

7-4
764332-898
screws, then reach inside shroud and unfasten both
spring catches.
7. Remove front half of base shroud.
8. Remove ground strap (Section A-A and Figure 19,
24) attached to back half of base shroud assembly
by removing nut and lockwasher (15, 16) from weld
stud.
9. Remove back half of base shroud.
7.4.2 Shroud Replacement
NOTE: Numbers in parentheses () refer to items found on
Figure 1 located in Illustrated Parts Breakdown (refer to
Tab) unless otherwise noted.
1. Raise table to maximum height.
2. Replace back half of base shroud and reconnect
ground strap to weld stud.
3. Ensure manual foot pedal is in DOWN position and
replace front half of base shroud.
4. Verify front and back pieces are even, then fasten
spring catches. Reattach screws at top of joining
seam (front and back).
5. Lower table to lowest position.
6. Replace bottom intermediate (6) shroud pieces,
snapping them together evenly around column.
Then replace middle intermediate (7) shroud
pieces, snapping them together evenly around
bottom intermediate shroud.
7. Replace upper (8) shroud pieces, snapping them
together evenly around middle intermediate
shroud.
8. Raise upper shroud and fasten in place with four
screws (35) removed previously.
9. Raise table half-way. Ensure interlocks between
shroud pieces (top and bottom) are connected.
10. To ensure proper adjustment of shroud sections,
apply hand pressure to left side of bottom base
cover (foot end) and shroud pieces self adjust.
11. Raise and lower table to ensure shroud sections
function freely, without binding.
7.4.3 Base Shroud Adjustment
Position the base shroud on the base casting to provide
the necessary clearance between column components
and the base shroud:
1. If replacing bumpers, apply Loctite
®1
222 to threads
and assemble bumpers into base casting as shown
in Figure 7-1.
NOTE: Bumpers 1 and 2 should protrude 5/16 ± 1/32"
(8 ± 0.8 mm) from the casting and the other three should
be flush with the casting.
2. Position base shroud onto base with shroud in
contact with bumpers 1 and 2.
3. Raise tabletop to maximum height. Articulate seat
section to maximum UP position (use TREND and
REFLEX functions) and articulate tabletop to
maximum RIGHT SIDE TILT position.
4. Lower tabletop until lower end of seat cylinder is
just below upper edge of shroud. Minimum
clearance between seat cylinder (retract port block)
and shroud should be 15/32" (11.9 mm) on left side
and 5/32" (4 mm) on foot end as shown in
Figure 7-1. If either (or both) of these dimensions is
less than minimum, increase clearance by
increasing projection of bumpers.
5. Articulate tabletop from full RIGHT SIDE TILT to
full LEFT SIDE TILT, observing clearance between
seat cylinder and shroud. Minimum clearance
should never be less than 5/32" (4 mm). Adjust
bumper 1 if necessary.
6. Projection of bumpers 1 and 2 from base casting is
now fixed. Increase projection of bumpers 3, 4 and
5 until they are snug against shroud.
1 Loctite is a registered trademark of the Loctite Corporation, a
Henkel Company.
7.5 HYDRAULIC SYSTEM PRESSURE
TEST
1. Remove cap from pressure test port located on
pump pressure banjo fitting (refer to S
ECTION
6.3,
H
YDRAULIC
P
UMP
R
ELIEF
V
ALVE
).
2. Attach pressure gauge to test port using tool kit
supplied hose.
3. Using override switches, position a table function
to end limit (mechanical stop). With movement
stopped but pump still operating (pump dead-
headed), check relief valve setting by monitoring
gauge. Setting should be 1750 (-25, +50) psi.
4. If adjustment is necessary, loosen adjusting screw
lock or jam nut (located on battery side of pump).
Rotate adjusting screw until proper pressure is
reached.
CAUTION – POSSIBLE EQUIPMENT
DAMAGE:
To prevent rubber bumpers from
being cut off, replace base shroud parts
carefully and evenly.