Mark V ProVis Injection System
15 - 12
**CHECK INJ HEAD CABLE PL
The feedback signal from the Plunger Position Pot is not within allow-
able limits.
Procedure:
1. Observe the plunger position indicator on the head Control
Panel:
• If the value displayed is zero, or in extreme reverse
position (beyond 63, 150 or 200 ml) the plunger
may be jammed; see step 2 below.
• If the indicator is between the limits of travel, con-
tinue with step 3 below.
2. Attempt to move the plunger manually with the motor knob
on the back of the head. If the plunger moves, or, the dis
-
play changes, continue with step 3. If the condition per-
sists, disassemble the head and attempt to manually move
the plunger drive gear. The drive may be jammed.
3. Check the injector head cable and connectors for broken
or intermittent connections.
4. Check the injector head for broken connections or an open
plunger position pot.
5. If the condition persists, replace the Servo Control Card.
6. If the condition persists, replace the injector head.
CHECK TURRET OR MECHANICAL STOP
Turret is not in the proper position for an injection. The turret must be
locked into position before the injector is armed. Forward load has
been activated while the plunger is at the full forward limit (or the
plunger plate is in contact with the mechanical stop plate), or, the tur
-
ret is out of position.
Reverse the plunger to full reverse position, rotate turret in both direc-
tions, then lock turret in proper position.
If the problem persists:
1. Check the injector head cable and connectors for broken
or intermittent connections.
2. Check the injector head for broken connections or a defec-
tive limit switch.
3. If the condition persists, replace the Servo Control Card.
CLEAR ALL PPI MEMORY - YES OR NO
Clears contents of PPI memory, in response to a RECALL 53. All pre-
set injection programs can be erased. To erase all stored programs,
press YES. To keep existing programs and return to normal operation,
press NO.
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