Maintenance and Troubleshooting
5-5
W a t e r S p u r t s O u t o f P u m p E x h a u s t
Water emitted from the pump exhaust is typically symptomatic of:
•
Insufficient priming during initial startup
When the UWCPC is first started after being dried, the unit must be
primed with approximately 400 priming injections before the
internal reservoir trap is filled. If the pump is started before trap is
filled, the trap will bubble causing water bubble into the pump/flow
system and out of the pump exhaust. Other possible causes of water
in the pump exhaust are:
•
Pressure surges on the sample inlet.
•
Excessive tipping of the unit during operation.
•
An obstruction of the sample nozzle orifice.
•
Failure of the temperature control on the water separator.
All of these situations will cause water to enter the air-flow system
downstream of the water separator. Water in these lines needs to be
removed before a controlled sample flow can be maintained.
Performing the following steps will generally clear the lines and
restore normal operation.
1.
Turn off the pump and disconnect any connections to the
Sample Inlet.
2.
Remove the wick and disconnect the Fill Bottle.
3.
Connect Drain Bottle and perform a manual Drain cycle.
4.
Operate unit with the Pump on for a period of at least eight
hours to dry the flow lines.
5.
Connect a flow meter to the Sample Inlet and check for proper
flow rate. Low flow values may indicate an obstruction in the
sample nozzle or other portions of the flow system.
6.
Replace the wick and reconnect the Fill Bottle.
7.
The unit can now be reprimed with water and returned to
service.
Reoccurrence of symptoms may indicate a failure of the water
separator or an obstruction in the flow system. Contact TSI for
service.
