Ohmeda 3000 - Yoke Manifold and Regulator Service; Caster Replacement

5/Disassembly and Repair
5.4 Caster Replacement
Casters can be replaced with the unit upright or the
unit may be carefully placed on it's right side (look-
ing from the front).
CAUTION: For safety have at least 2 people available
to replace a caster. Remove all accessory equipment.
1. Lock or block all remaining casters to keep the
unit from rolling around (unless the unit has
been laid on it’s side).
2, Use blocks to support the frame near the caster
you are replacing.
3. Remove the plastic end plate from the stand as-
sembly.
4. Use a 7/8“ socket and ratchet to remove the cas-
ter mounting nut.
Note: There is another nut undemeath the cas-
ter. You may have to hold this nut while remov-
ing or tightening the caster mounting nut.
5, Tilt the unit; remove the old caster and install
the new caster (unless the unit has been laid on
it's side).
6. Replace the mounting nut and tighten securely.
Note: There is another nut underneath the cas-
ter. You may have to hold this nut while remov-
ing or tightening the caster mounting nut.
7. Replace the plastic end cap.
5.5 Yoke Manifold Repairs
WARNING: Never oil or grease oxygen equipment
unless a lubricant that is made and approved for
this type of service is used. Oils and grease
oxidize readily, and in the presence of oxygen,
will burn violently. Vac Kote* is the oxygen ser-
vice lubricant recommended (Order No. 0220-0091-
300).
*Vac Kote is a trademark of Bail Brothers Research Corporation.
A. General
(Figures 5-15 and 5-16)
Periodically lubricate the Tee handle screws with a
small amount of oxygen service lubricant. This will
prolong their life and make sealing of the yoke gas-
kets
easier.
Periodically replace the yoke check valve strainer
nipples before they become clogged with lint or
dust. Momentarily open and then close the cylinder
valve before installing cylinders to blow any foreign
material from the valve.
When installing fresh cylinders, remove the old gas-
ket and use a clean new gasket (gasket seal, stock
no. 0210-5040-100) in its place. Open cylinder valves
5-L-O-W-L-Y to avoid straining high pressure gauges
and developing excessive heat of recompression.
B. Gauge Replacement
{0205-8350-300)
WARNING: When replacing gauges, be sure to use
identical pressure ranges.
1. Turn off oxygen supply.
2. Use a 7/16 inch open end wrench and turn the
gauge counterclockwise to remove it.
3. Apply Teflon tape around the threads of the new
gauge.
4. Install the new gauge by turning it in clockwise.
Do not over-tighten.
C. Gauge Lens Replacement
(0212-0900-300)
1. Turn the lens cover counterclockwise to remove
it.
2. Clean both sides of the replacement lens.
3. Place the lens cover in position over the gauge
face and turn the lens clockwise. Do not over-
tighten.
Strainer Nipple and
Safety Index Pin
Make
sure
safety
Yoke
Gate
index pins are engaged
before closing yoke gate.
Use E size gas cylinders.
Make sure cylinder valve
dust cap is removed.
Figure 5-15
Oxygen Manifold Maintenance
5-16
Open cylinder valves
slowly to avoid damaging
Close Yoke
Use a fresh gasket
Gate. each time a cylinder
Tighten is replaced.
tee Use only one cylinder
handle by gasket per yoke.
hand only.