KROHNE OPTISENS OAS 2000 EN - Manual (Page 37)

SERVICE
6
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OPTISENS OAS 2000
www.krohne.com 07/2010 - MA OAS 2000 R02 en
Service
6.1 Cleaning the flushing nozzle
If the flushing nozzle becomes plugged, it can usually be cleaned by backflushing it with clean
water.
Cleaning the flushing nozzle on submersible sensors
• Before attempting to backflush, close the valve of the flush water source.
• Disconnect the sensor flushing hose from the solenoid valve.
• Place a 12 mm / 0.47" hose over the flush nozzle and carefully open the water valve.
i The pressure should clear the line of solids. If backflushing does not work initially, try
cleaning the three flushing nozzles with a needle. Try backflushing the nozzles again as
described above until clean water comes out at the solenoid valve end of the hose.
Plugging the nozzle if flushing is not used
• Plug the nozzle by removing the membrane and the steel bracket, which is attached with two
screws to the sensor head.
• Fit a spotfaced M5x8 screw with soft thread retainer in the hole.
6.2 Spare parts availability
The manufacturer adheres to the basic principle that functionally adequate spare parts for each
device or each important accessory part will be kept available for a period of 3 years after
delivery of the last production run for the device.
This regulation only applies to spare parts which are under normal operating conditions subjects
to wear and tear.
6.3 Spare parts and accessories
INFORMATION!
The nozzle of an inline sensor usually does not need to be cleaned. The nozzle works as a check
valve to avoid that process liquid is pressed up the flushing hose. It consists of a rubber
membrane held in place by a steel bracket.
Order number Designation
XGA S 06010 OAS 2000 inline connection valve
XGA S 06020 OAS 2000 inline but weld end R 1½"
XGA S 06030 OAS 2000 inline 1/12" NPT nipple
XGA S 06040 Sealing kit for OAS 2000 inline version
XGA W 08010 Signal cable extension for OPTISENS 2000 sensor (10 m / 33 ft)
XGA W 08020 Signal cable extension for OPTISENS 2000 sensor (30 m / 98.4 ft)
.book Page 37 Friday, July 2, 2010 1:49 PM