MTR221/A - MTR221/A DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
Modello/Model R221/A - R221/A DHHS
OPERATION INSTRUCTIONS
17
R221/A - R221/A DHHS - Operation Instructions
Ralco srl
OPERATION INSTRUCTIONS
LIGHT/X-RAY FIELD SETTING
• Set the collimator at 100 cm SID.
• By rotating the knobs and with the knob index on the front panel, follow the tags of the
scale.
• Do not force the knobs.
• Activate the light field by pressing the related push-button on the collimator front panel.
• The collimator is ready to operate.
The collimator has been designed to operate as follows:
• Supply constantly connected during operation of the equipment.
• Light source ON time for the light field is factory set at 30 seconds (tol.20%). It is adjustable
from 30 to 45 seconds via a trimmer on the timer board.
• The normal ON/OFF cycle is set at 1 minute followed by an idle time of 4 minutes to allow
for cooling time (i.e. 1 minute ON/ 4 minutes OFF).
• The field is set by the two knobs on the front panel by following the indications of the scale
with the knob index or visually with the light field.
Front Panel
WARNING:
P
ROLONGED LIGHTING WITHOUT ALLOWING LIGHT SOURCE TO COOL CAUSES THE
COLLIMATOR TO OVERHEAT IN THE AREA NEAR THE LIGHT SOURCE.
F
OR EMERGENCIES: MAXIMUM LIMIT ADIVSED IS 5 SUCCESSIVE LIGHT SOURCE OPER-
ATIONS. ALLOW THE COLLIMATOR TO COOL (ABOUT 10 MIN).
B
Y INCREASING THE CONSECUTIVE "ON" TIMES, THE SUBSEQUENT REST PERIODS
NEED TO BE EXTENDED ACCORDINGLY. IT IS IMPRUDENT TO PERFORM TWO CONSEC-
UTIVE CYCLES OF 5 ON TIMES.
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