65
Maintenance
Chillgard 5000
US
9 Maintenance
Obey the following Cautions and Warnings for all maintenance procedures.
WARNING!
To prevent electrostatic discharge (ESD), connect an ESD wrist strap to the ESD connection point
inside the device enclosure before doing work inside the enclosure. ESD can cause damage to the
device.
Do not touch the electronic circuit boards.
Disconnect ac power before opening the device enclosure. Failure to do so can result in electrical
shock. Electrical shock can cause damage to the device and injury to personnel.
Failure to follow these warnings can result in serious bodily injury or death.
Under routine operating conditions, the device requires the following scheduled maintenance proce-
dures:
• Examine and replace end-of-line filters
• Examine and replace internal inline filters
9.1 Scheduled Maintenance
9.1.1 Examine and Replace End-of-Line Filters
WARNING!
Failure to use and maintain end-of-line filters can cause inaccurate readings and damage to internal
components, and make additional servicing necessary.
Failure to follow these warnings can result in serious bodily injury or death.
Examine the end-of-line filters periodically for dirt and particulate buildup.
Replace dirty filters when necessary. For a list of approved parts and how to order them, refer to
Section 13, "Ordering Information".
If an end-of-line filter becomes severely clogged with particulates, the flow rate for that sample line will
decrease and eventually cause a flow rate fault.
Do the following procedure to replace an end-of-line filter:
(1) Disconnect the dirty filter from the sample line tubing.
(2) Discard the dirty filter.
(3) Remove the new end-of-line filter from the bag.
(4) Slide the end of the end-of-line filter with flexible tubing
onto the sample line tubing. Make sure the arrow on
the body of the filter points in the direction of air flow
into the sample line.
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