Specifications; Maintenance; Troubleshooting - RESTEK 28500 Manuel D'instructions

7.0 Specifications

• Altitude: Up to 2000 m above mean sea level
• Ambient Temperature: 50–98.6 °F (10–37 °C)
• Battery Rating: 12 hours operation
• Certifications: CE (EU, Korea, Japan, Australia);
CSA/UL tested, not listed.
• Compliance: WEEE, CEC, China RoHS 2
• Humidity Range: 0–97%

8.0 Maintenance

Avoid spilling liquids onto the unit or it may malfunction. If a liquid is
spilled onto the unit, turn off the power immediately, remove excess
liquids with a dry towel, and let the unit sit until the liquid dries. Dust
and debris can enter the probe tip of the leak detector and, over time,
can clog the small-bore tubing inside the unit. To prevent this, clean the
probe tip periodically. To clean the probe tip, unscrew the cap to expose
the brush (Figures 2 and 3). Gently clean the probe tip brush using a
small cleaning brush or your fingers to remove dust and debris, then
replace the cap. Do not use liquids to clean the probe. Liquids can dam-
age the leak detector if drawn in through the probe.
Information on where to have the unit sent for maintenance or service*
is listed at the end of this document.

9.0 Troubleshooting

Problem Possible Cause
Probe clogged
Change in sensitivity
is observed
Probe line punctured,
damaged or plugged
Response decreased Detector not zeroed
Detector re-zeroed before
unit was completely reset
LEDs stays lit during
Reference gas or probe
operation
inlet covered by hand or
other object
Does not power up Batteries need to be charged
Does not power up
Batteries may be damaged
after charging
*Contact Restek or your Restek representative for return instructions for servicing a
damaged unit.
www.restek.com
6
• Indoor Use Only
• Manufacturer: Restek Corporation, 110 Benner
Circle, Bellefonte, PA 16823
• Pollution Degree: 2
• Power Rating: 5 volts DC, 1 A (AC adaptor and USB
charging cable supplied)
• Warranty: 1-year warranty
Suggested Solution
Clean the probe tip to
remove any debris
Visually inspect probe
line for holes*
Re-zero detector
Allow adequate time for detector
to vent gas, then re-zero
Remove obstruction
Charge unit
Unit can operate while plugged
into adaptor or USB cable, but
unit should be returned to Restek
to have the battery replaced*
Figure 2: Cap unscrewed and
partially removed.
Figure 3: Cap removed,
exposing probe tip brush
for cleaning.