BIO-MED DEVICES Crossvent-2i+, Руководство по эксплуатации и обслуживанию, Страница: 67 / 97

VIII. M A I N T E N A N C E A N D S E R V I C E - C O N T .
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5. Unscrew the two screws holding the solenoid to be replaced to the manifold and remove the solenoid.
6. Making sure the gasket is properly fitted around the new solenoid’s ports, secure it to the manifold with the screws.
7. Re-solder each solenoid to the Solenoid PCB and reassemble in reverse order.
10. GAS INPUT FILTER
1. Remove the Rear Panel. Be careful of the battery, which is now free. It may be secured by taping it in place or it
may be removed.
2. Remove the two screws holding the fittings plate to the bottom of the battery compartment.
3. Using a ¾” open end wrench, hold the inside input fitting on the regulator and remove the outside fitting with a
second wrench.
4. Remove the conical filter that is inside this fitting and replace it with a new one.
5. Reassemble in the reverse order. Be sure to tighten these fittings enough to seal the filter (approximately 25 foot-
pounds [3.5 kg]).
6. If this Crossvent has a second supply input, there will be a filter in this fitting also. Repeat the procedure to replace
it.
11. PREVENTIVE MAINTENANCE KITS
1. The simplest way to replace the pneumatic logic lines is to do them one line, one point at a time.
2. Once all the logic lines in the kit have been replaced, they will need to be
calibrated. Refer to the Pneumatic Calibration Procedures for these
instructions.
3. The process for removal and replacement is the same for each line as
described here.
a. Observe the new logic line and locate the existing, matching line in the
Crossvent. Study how it is installed and where each end is connected.
b. It does not matter which end you start with so pick an end on the new
line and match it up with the line to be replaced.
c. Using a sharp X-Acto style knife, remove the tube from the barb by slicing it along the length of the barbed
fitting starting at the base and stopping at the barb (see illustration). It is important not to damage the actual
barb in any way or leakage may occur after reassembly.
d. Using needle nose pliers, grab the cut tubing and peel it back and remove it from the fitting.
e. Push the matching end of the new line onto the barbed fitting with the needle nose pliers being careful not to
damage the tubing in the process. Push it on far enough to reach the base of the barb.
f. Repeat this process for each end of the new line, one at a time, until the old line is completely removed and the
new one is completely installed.
g. When done, ensure that no part of the pneumatic logics can make contact with the PCB. Use cable ties if
necessary, but use them loosely.
h. Before the Crossvent can be returned to service, these parts must be calibrated as outlined in the Pneumatic
Calibration section.
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