Evoqua WALLACE & TIERNAN DEPOLOX 5 E 700 P Series, Instruction Manual

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DEPOLOX
®
5 E flow cell
Maintenance
5.
55
5.9 Cleaning flow rate monitor and check valve
Proceed as follows:
1 Switch off the power supply.
2 Drain the sample water inlet and outlet line.
3 Remove the housing cover of the DEPOLOX
®
5 E flow cell.
4 Dismantle the filter unit.
5 Carefully pull the complete non-return ball valve housing (A) down
and out.
6 Turn the non-return ball valve housing upside down and catch the
flow ball (B) or if the ball is jammed, release it with a slight knock.
7 Use a suitable blunt tool to push out the ball seat (D) and glass ball
(C) against the direction of flow.
8 Clean the empty check valve housing, flow ball, ball seat and glass
ball with distilled water.
9 During reassembly, make sure that the ball seat and ball are cor -
rectly positioned.
10 To help push the assembled check valve housing back into the con -
trol valve, slightly lubricate the gaskets with the supplied Unisilikon
grease.
11 Check that the non-return ball valve housing is correctly positioned
through the guide lugs on the housing.
12 Fit the filter unit again.
13 Refit and engage the housing cover of the DEPOLOX
®
5 E flow cell.
14 Reconnect the sample water inlet and outlet lines.
15 Re-establish the power supply.
Image 3 Detail: installation location of check valve housing
Image 4 Cross-section of check valve-housing
A Check valve housing (overall)
B Flow cone
C Spherical seat
D Glass ball
5.10 Cleaning
Do not use aggressive cleaning agents (e.g., alcohol, abrasive cleaners)!
We recommend a damp cloth moistened with a commercially available
neutral detergent.
A
top
bottom
B
C
D