Seametrics WMP-Series - Manual (Page 7)

MAINTENANCE, REPAIR and TROUBLE SHOOTING
Problem Probable Cause Try...
Blank display:
WMP101
Blank display:
WMP104
Reading “-EP-”
Flow but no flow rate reading
No power to unit
Batteries dead or misinstalled
Empty or partly filled pipe
Excessive air pockets or foaming
Heavily coated electrodes
Check power supply
Check wiring
Check polarity, replace batteries
Rearrange piping to ensure full pipe
Remove meter and wipe electrodes
MAINTENANCE AND REPAIR
There are no user-serviceable parts in the WMP-Series me-
ters except the batteries in the WMP104.
Battery Replacement. When the “low bat” indicator appears,
the batteries should be changed. Either six each AA alkaline
cells are required, or two each C lithium cells with integrat-
ed wiring harness, depending on power option ordered with
meter. To change the batteries, first remove the four screws
which hold the top cover in place. Be careful not to lose the
wash ers. Move the top cover to one side and remove the
foam retainer which covers the battery tray or pack.
> For units with AA alkaline batteries, remove the old bat teries
from the battery tray, and replace them with fresh ones, tak-
ing care to fol low the polarity indicators in the battery tray.
> For units with the optional C lithium batteries, carefully un-
plug each of the two battery wiring harness connectors. Slip
the batteries out from under the elastic retainer, and replace
them with the new batteries. Reconnect each of the two wir-
ing harness connectors. The connectors are indexed for cor-
rect installation.
Replace the foam retainer, then put the top cover back in
place. Warning! Use Extreme Caution not to pinch wiring or
other assembly parts under the housing seal - this may cause
an ingress of water, voiding the product warranty. Replace the
four screws and washers, then tighten them securely using
cross-pattern to evenly compress the gasket. Environmental
and Safety note - take care to dispose of all batteries in ac-
cordance with Federal, State, and Local regulations.
TROUBLE SHOOTING
6