Dräger Narkomed 2B, Service Manual, Page: 79 / 308

NM2B REPLACEMENT PROCEDURES (continued)
4.15 AV-E Ventilator Solenoid Valve
The ventilator solenoid valve is located in the ventilator box and is mounted
on the inner back wall of the box. Replacement of the solenoid valve requires
lifting the monitor box to gain access to its mounting and connections. Figure
4-15 shows the mounting location, electrical connections and tubing
arrangement of the solenoid valve.
4.15.1 Set the System Power switch to
STANDB
Y and remove AC power
from the machine.
4.15.2 Remove the screws holding the monitor box to the ventilator box.
WARNING: Two people are required to perform the remaining
portion of this procedure.
4.15.3 Raise the rear left side of the monitor box chassis approximately two
inches, and prop the box open.
WARNING: Ensure that AC power is removed from the
machine before raising the monitor box. Failure to
observe this precaution may cause injury by
electric shock.
4.15.4 Remove the two screws holding the safety cover over the AC power
filter, and remove the cover.
4.15.5 Remove the two screws holding the solenoid valve to the inner wall
of the ventilator box.
Rev. A
4-47
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