Maintenance
91518 Multigas Analyzer Service Manual
4-4
Replacing the Fan Air Filter
Note:
Depending upon the hospital environment, the air filter may need to be cleaned more frequently than
specified. It is recommended that, initially, hospitals inspect the air filter at monthly intervals until an
appropriate cleaning cycle can be established.
To replace the fan air filter:
1 Remove the filter cover from the front of the 91518 (refer to
on page 4-4) using a small, flat
screwdriver.
2 Replace the filter with a new one, or clean the existing one by washing it with water and mild soap.
3 After the cleaned filter has dried, reinstall it.
4 Reinstall the fan filter cover.
5 Verify that fan is working properly and is drawing air into the unit.
Figure 4-2: Fan air filter
D-fend Water Trap Replacement
Warning:
The used water trap may contain hazardous fluids and should be disposed of in accordance with
hospital procedures.
To replace the D-fend Water Trap:
1 Twist the gas sampling line counter-clockwise at the input port to remove the sampling line from the D-fend
water trap.
2 Check and verify that the D-fend water trap is empty. Dispose of the water trap when full and between
patients.
3 If the water trap is not empty, follow the hospital safety procedures for handling possible contaminated
material.
