Evoqua WALLACE & TIERNAN DEPOLOX 5 E, Instruction Manual

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64
WT.050.810.040.DE.IM.0817
Maintenance
DEPOLOX
®
5 E flow cell
5.
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
correctly positioned.
10 To help push the assembled check valve housing back into
the control 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.
Figure 3 Detail: installation location of check valve housing
Figure 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