Capintec CRC-25R, Руководство пользователя, Страница: 16 / 228

CAPINTEC, INC. CRC
®
-25R
CAUTION: High voltage is present inside the Chamber (up to 180 Vdc). Due to the
presence of this high voltage, opening the covers with the system
plugged in may be hazardous. Refer all servicing to qualified personnel.
CAUTION: No internal adjustments inside the Readout or Chamber may be
performed by the user within the conditions of the warranty, except for
changing the fuse. Due to the presence of high voltages, opening the
cover with the system plugged in may be hazardous. Refer all servicing
to qualified personnel.
CAUTION: Except for Brachytherapy, never use the calibrator without the Chamber
Liner in place. Liners are inexpensive and easy to replace. A
contaminated Chamber is a very costly mistake. If the unit becomes
contaminated, remove the liner and clean the unit as stated in CHAPTER
15: CLEANING AND MAINTENANCE, SECTION: CLEANING and
DISINFECTING before operating.
CAUTION: Care must be exercised when moving the instrument or when
maintenance is performed. The shielded cylinder is heavy (13.6 kg or 30
lb.). In order to provide the required sensitivity, the wall of the ionization
chamber is extremely thin and the chamber is filled with pressurized gas.
It is therefore, essential to avoid mechanical shock or vibration of any
kind.
CAUTION: When working with a heavy sample (especially a CapMac or Moly Assay
Canister) always lower it gently into the Chamber. Dropping any heavy
object into the Chamber can cause permanent, expensive damage.
CAUTION: The use of multiplication and division factors in Calibration Numbers is
only to maintain a degree of consistency with other Capintec Dose
Calibrators. The CRC
®
-25R is a direct reading instrument. If
multiplication or division is required, the arithmetic will be done by the
system. The actual activity is displayed. DO NOT apply these factors to
the displayed activity yourself.
CAUTION: It is desirable to leave the unit powered at all times in order to prevent
moisture absorption and to maintain the stability of the instrument
(especially if the instrument is subjected to high humidity or low
temperature).
CAUTION: The sensitivity of the Chamber is somewhat dependent upon the vertical
position of the sample within the well. All calibrations were done with a
Standard Sample placed in the supplied sample holder (dipper). It should
be noted that in this configuration, the sample is not quite at the bottom
of the well. If, for any reason, you make a measurement without using
the dipper, be sure that the sample is in the correct vertical position. Both
the CapMac and the Standard Moly Assay Canister maintain the same
position as the dipper.
1 - 4 SAFETY October 13