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MANAGERS AND PROJECTIONISTS
585
RECTIFIER TROUBLE CHART.
rCurrent at switch — Fuses blown.
hJNo current at tube J Hi terminals.
LNo current at switch — Line voltage off. •-Friction or bent stud.
Relay contact not closed. ■<
Relay contact is poor.
Tilting circuit open.
Secondary coil of magnet circuited.
short
I Amalgam bridge between electrodes — Install new tube.
r /-Lamp circuit open.
D. C. circuit open. J
I Carbons not making good contact with (__ each other or with the lamp jaws.
Lead en starting anode broken or loose.
Does not return to vertical.
Mercury pools do not make
contact. I.j.
J Adjus
st tube; it does not tilt far enough. Friction in tube holder.
Returns to vertical with-"l Tube is defective, out flash after re h
peated tilts. J. Tube has lost its vacuum.
Flashes and goes out. ( Lead *? Positive electrode anode loose or ( broken.
J
New tube.
Tube continues to tilt after starting.
Tube gees out. Tube tilts feebly.
Relay does not open the circuit.
Winding short-circuited, friction or bent stud.
Outfit is noisy.
| Lamp carbons separated too far.
(Voltage of circuit low. Frequency of current not right. Friction in tilting mechanism. Tube is too heavy at bottom.
fReaetance coil loose on frame. I Reactance coil air gap not wedged tight. ■^ Cover vibrates.
Operating room floor vibrates — set outfit on felt pads.
Arc is noisy. ] Carbons too hard — use softer ones.
NOTE — When proper vacuum exists the mercury gives eff a sharp clicking sound when it is run from one end of the tube to the other. Absence of this sound and the presence of air bubbles show loss of vacuum.
Tube may be defective by short-circuiting between starting anode and cathode. When in this condition it as badly blackened.
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