midmark 91800138 Flip Lever Retrofit Kit Instructions

midmark 91800138 Flip Lever Retrofit Kit

Thoroughly review all instructions before beginning any installation. Examine contents of package for damaged or missing parts. If any damage is discovered and/or parts are missing, notify your Midmark representative immediately…Tools required – 1/2-inch and 7/16-inch open end wrench, assistant. Perform a system leak test and correct leak(s) (see page 3) prior to installing flip lever kit.

Instructions

1. Remove acorn nut, knurled thumb nut, and plastic washer from both absorber tie rods. Do not discard acorn nuts. Caution: On VA absorbers hold lower absorber assembly to keep components from falling

2. Install aluminum washer first, then plastic washer, supplied with kit, over tie rod.

3. Be sure the plastic CO2 absorber canister is in place during this step. While pushing down on VMS absorber assembly top, (on VA units push absorber assembly together) insert the flip lever assembly and retainer over the tie rod as shown in the photo. Begin threading the retainer onto the tie rod, DO NOT TIGHTEN. Repeat with other tie rod. While still pushing down on the absorber assembly top, (push together on VA units) finger-tighten Retainer the retainer against the flip lever assembly, DO NOT Flip lever assembly USE A WRENCH.

4. After both retainers are finger-tight, tighten each retainer an additional 1/2 turn using a 1/2-inch wrench. DO NOT TIGHTEN MORE THEN 1/2 TURN WITH WRENCH. Note: hold flip lever assembly so as not to turn while tightening the retainer.

5. While holding the retainer with a 1/2-inch wrench rotate the flip lever assembly so it points away from the center of the absorber top, see photo. Repeat other assembly.

6. Insert the 3/16-inch long #4 setscrew into each of the retainers and tighten. (0.05-in hex wrench supplied)

7. With the flip lever assembly still in the locked (down) position insert the 1/8-inch long #6 setscrew into the lower threaded opening of each bushing and tighten. (1/16-in hex wrench supplied)

8. Open the flip lever assembly, insert the 1/8-inch long #6 setscrew into the upper threaded hole of each bushing and tighten.

9. While holding the retainer with a 1/2-inch wrench, thread the acorn nut (taken off in step 1) onto the tie rod and tighten the acorn nut using a 7/16-inch wrench. Repeat for other tie rod.

10. Perform a leak test to verify system integrity (see page 3). Note: leak(s) may not be related to installing lever kit.

To operate the flip levers push VMS canister assembly top down and hold. Push flip levers down to lock position. On VA units push both flip levers down simultaneously. To open, push levers up.
In the event that the flip lever assembly needs to be tightened, remove the acorn nut and set screws, tighten the retainer an additional 1/8 to 1/4 turn with a 1/2-inch wrench (see step 4), then repeat steps 5 through 10.

Veterinary Anesthesia Machine Pressure check

It is recommended that anesthesia machines be tested for leaks prior to each veterinary procedure in which the machine is used.

1. Close the relief valve-exhaust (APL valve, dump valve, pop-off-valve, etc.) and place your thumb over the patient connection of the Y-piece, found at the end of the breathing circuit.

2. Open the oxygen flowmeter and allow the pressure to fill the machine naturally. Once it reaches 30 cm/H2O on the pressure gauge, turn off the flowmeter.
   Note: The breathing bag will inflate during this procedure; there is no cause for concern.

3. Observe the pressure gauge. If the pressure drops from 30-cm H2O to 27-cm H2O in less than 10 seconds then leak(s) must be fixed.

Common Places for Leaks

• Breathing bag and/or breathing circuit
• Breathing circuit point of connection to machine
• Unidirectional breathing valves
• CO2 absorber gasket(s)
• Relief valve-exhaust
• Vaporizer inlet and outlet connections; filler cap
• Fresh gas delivery hose and connection to machine
  To locate leaks place hand over all connections, the breathing circuit, and bag, while system is pressurized, and feel for leaks. For hard to find problems, wet hand or use soapy water solution over connections. Evidence of bubbles will help locate leaks.

Midmark Corporation
For contact information, go to : www.midmark.com

References

• Midmark Medical, Dental, Vet Equipment Manufacturer & Supplier

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