Troubleshooting Guide
15 - 11
CALL MEDRAD SERVICE
Remove power from the injector for 10 seconds, reapply power, then
attempt to operate the unit again.
If the condition persists:
A non-operator correctable system monitor condition has
occurred which requires assistance from the MEDRAD
Service department.
CAN NOT ROLL THE LEVEL DOWN
The LEVEL DOWN button was pressed with the injector at injection
level 1. Press the LEVEL UP button to advance to other injection lev
-
els.
CHANGE FLOW SCALE? YES/NO
The Delta 3 button (Flow Scale) has been pressed. Press YES to
change the Flow Scale. Press NO to return to present operations.
**CHECK INJ HEAD CABLE MS
The feedback signal from the Mechanical Stop pot (in the head) is not
within allowable limits.
Procedure:
1. Observe the Mechanical Stop position indicator on the
injector head:
• If the indicator is at the extreme forward position
(beyond zero), it may be jammed; see step 6
below.
• If the indicator is against the plunger indicator, the
plunger plate may be jammed; see step 6 below.
• If the indicator is between zero and the plunger
position, continue with step 2.
2. Check the injector head cable and connectors for broken
or intermittent connections.
3. If the condition persists, check the injector head for broken
connections or an open Mechanical Stop pot.
4. If the condition persists, replace the Servo Control Card.
5. Replace the Mechanical Stop card.
6. The Mechanical Stop plate may be jammed. Remove the
bottom cover of the head and attempt to move the belt
manually.
7. If the condition persists, or if the Mechanical Stop cannot
be manually moved, replace the injector head.
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