Hitachi ZA3000 Series, Instruction Manual

Page: 518 / 522

5 - 2
(6) Fix the pump tube in reverse to the disassembling procedure.
NOTE 1: Be sure to turn off the HFS-4 power before replacement
of the pump tube.
2: The pump tube has a service life of about 100 operating
hours. Near the end of the service life, the tube should be
checked carefully for deterioration or damage.
3: The inner diameter of pump tube is different between
reagent and sample. The tube should be replaced after
confirming its proper inner diameter (0.79 mm for reagent,
2.38 mm for sample).
4: Three pump tubes should be replaced with new ones
simultaneously.
5: For connecting the pump tubes to the nipples, match the
identification markers put on the suction tubes. (Red for
HCl, green for NaBH
4
, blue for preliminary reducing
agent, none for Sample.)
6: Each tube should be connected securely. Otherwise, poor
aspiration or leakage may be caused.
5.2 Replacement of Fuse
(1) The fuse holder is at the upper side of the power cord socket on
the rear of HFS-4. If the fuse is blown, pull out the fuse holder
while holding both knobs of the fuse holder.
Fig. 5-3 Fuse Holder
(2) Replace the fuse with a new one and set the fuse holder.
NOTE 1: Before fuse replacement, be sure to disconnect the power
cord.
NOTE 2: The kind and capacity of a new fuse must be the same as
the old one.
Knobs
Fuse holder
Power cord socket