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9-3
Maintenance
Tip:
To prevent problems with overheating, institute a regular program of checking for dust
buildup, particularly for robotics installations.
Cleaning Radioactive or Biohazardous Materials
From the Block
When cleaning machines that have been running radioactive or biohazardous reactions,
consult your institution’s radiation safety officer or biosafety officer regarding cleaning meth-
ods, monitoring, and disposing of contaminated materials.
Changing the Fuses
The circuits in the DNA Engine Dyad cycler are protected by two fuses (6.3A fast-acting, 5 x
20mm). When a fuse blows, the DNA Engine Dyad cycler immediately shuts down and
cannot be turned back on. The machine records the event as a power loss. If a protocol is
running when a fuse blows, the machine will resume the run when the fuse is replaced and
the power restored.
Warning:
The DNA Engine Dyad cycler incorporates neutral fusing, which means
that live power may still be available inside the unit even when a fuse has
blown or been removed. Never open the Dyad base. You could receive a
serious electrical shock. Opening the base will also void your warranty.
1. Disconnect the power cord from the back of the instrument. Move the power switch to the
“0” (off) position.
2. Insert a small flat-head screwdriver into the slot in the center of the fuse plug (figure 9-1A),
and gently turn. The plug will disengage. Pull the plug straight out to expose the fuse
(figure 9-1B).
3. Remove both fuses and replace them with new ones (it is often impossible to determine
visually which fuse is blown). You can also test the fuses with an ohmmeter to determine
which is defective and replace just that one.
4. Gently press the fuse plug back into place. Turn and secure with the screwdriver. Recon-
nect the power cord.
✔
Fuse
B
Fuse plug
Figure 9-1
A, How to pull out the fuse plug. B, Location of the fuses in the opened plug.
Fuse plug
Screwdriver
A
Содержание DNA Engine Dyad PTC-220
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Страница 136: ...11 9 Alpha Units and the Remote Alpha Dock System Figure 11 5 Flush mounting template ...
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Страница 155: ...Index In 11 service 8 8 set date time 8 3 update soft 8 5 8 6 user name 8 3 V Virtual keyboard 5 18 W Warranties D 1 ...
Страница 156: ...DNA Engine Dyad Operations Manual In 12 ...
Страница 157: ...Declaration of Conformity DoC 1 ...