FDO 4410(W)
Maintenance, cleaning, replacement
11
ba76197e01
10/2017
3.2
Exchanging the
sensor cap
To exchange the sensor cap, proceed as follows:
Removing the
sensor cap
Mounting the
sensor cap
Before removing the sensor cap, observe the general mainte-
nance instructions in section 3.1.
1.
Pull the sensor out of the sample.
2.
Clean the outside of the sensor (see section 3.3.1).
3.
Unscrew the protective hood from the sensor by hand.
4.
Thoroughly clean and dry the sensor head once again.
5.
Grasp the sensor cap on the sides (arrows in figure on the left) and
remove it by pulling it away from the sensor in a straight upward
direction.
Caution:
Do not push any tools or other sharp objects between the sealing sur-
faces. This would damage the sealing surfaces and sealing ring.
6.
Check the front surface of the sensor for absolute cleanness and
clean it if necessary (see section 3.3.2).
7.
Thoroughly clean the thread of the protective hood.
8.
Check the sealing ring for intactness and correct position.
The sealing ring has to be replaced if it is damaged.
9.
Aim the sensor head upwards and place the new sensor cap on the
sensor. The locking device on the sensor head must be inserted into
the receptacle on the inside of the sensor cap (see figure on the left).
10.
Put the protective hood on the sensor head and screw it tight by hand
as far as it will go. A gap of approx. 0.8 mm remains between the pro-
tective hood and sensor.
The sensor is immediately ready to measure.
Sealing
ring
Summary of Contents for YSI FDO 4410
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