Maintenance - Global Water WS755 Quick Start Manual

XII. Maintenance
Sampler
The Global Water WS755 Water Sampler requires minimal maintenance. The
sampler enclosure is rainproof and rugged. Avoid exposure to extremely rough
usage. Routinely wipe the carrying case and control panel face, rinse the pickup
hose and debris strainer, and wash the sample bottles with mild soap and warm
water. Additional plastic and glass sample bottles, neoprene tubing for the
sampler pump, bottle caps/float switches, removable debris strainers, and pickup
hose can be purchased from Global Water (see Appendix D section).
Battery
If the pump runs slowly, this is an indication that the battery requires charging.
The Nickel –Metal Hydride (NiMH) battery is a low self-discharge type, allowing
the battery to remain charged during long periods of non-use.
To recharge the battery, open the battery enclosure and unplug the battery from
the control panel power cable. Remove the battery and plug it into the NiMH
battery charger. The charger is designed with safety features which prevent
battery overheating or overcharging. The "READY" and "CHARGE" LEDs will
illuminate while the battery is being charged. Once completely charged, only the
"READY" LED will be illuminated. The "FAULT" LED indicates one of several
conditions:
• Battery is severely depleted, which will place the charger into trickle
charging mode until battery is conditioned, at which time the charger will
switch to fast charging. At this point, the "FAULT" LED will turn off and the
"READY" and "CHARGE" LEDs will illuminate.
• If the battery to be charged is either too hot or too cold, the battery
thermistor will cause the "FAULT" LED to illuminate. Once the battery
reaches near room temperature, charging will begin.
• Should the battery have a shorted or open cell, the "FAULT" LED will
illuminate upon connecting the battery and remain on.
NOTE: Under normal conditions, the battery will require approximately two hours
to fully charge from a fully discharged state.
Additional batteries and battery chargers are available from GWI.
Global Water
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