Hach-Lange NH4D sc User Manual

DOC273.52.00147

Chain Mount Kit LZX914.99.12400

Instruction Sheet

© HACH LANGE GmbH, 2007. All rights reserved. Printed in Germany.

Instruction Sheet

Chain Mount Kit LZX914.99.12400

Introduction

This instruction sheet describes the installation of the chain mou nt kit for 1½-inch NPT thread
45° (Cat. No. LZX914.99.12400).

Items supplied are shown in Figure 1 on page 3. Not all items in the hardware set are required.
Only the parts used in these instructions are listed.

Installation dimensions are shown in Figure 2 on page 4.

DOC273.52.00147

Figure 1 Items supplied with the chain mount kit (LZX914.99.12400)

1 Mounting plate 6 Immersed pipe with 1½-in. NPT thread, 400 mm long

(see Figure 2 on page 4 for dimensions)

2 Arm bracket 7 Elbow, 45°, 2 x 1½-in. NPT thread
3 Screw top 8 Reducer
4 Set of small parts 9 Plastic chain (see Figure 2 on page 4 for dimensions)
5 Arm (see Figure 2 on page 4 for dimensions)

3

Chain Mount Kit LZX914.99.12400

Figure 2 Installation dimensions

Selecting the installation location

Important note: Refer to the sensor user manual when installing the mounting hardware.
Note all safety instructions and hazards.

Note: When selecting the installation location, always ensure there is safe access to all parts of the
system and that the sensor can never hit the tank wall.

During the selection of the installation location, pay attentio n to:

• The load bearing capacity and strength of the ground or railings (leverage due to flow
and installation)

• The maximum cable and tubing lengths

• The flow conditions

• The space required to remove the sensor for cleaning

Note: Refer to the sensor user manual for sensor-specific installation requirements.

4

Installing the chain bracket on the ground

1. Find a suitable installation location and install the quick-fit anchors.

2. Drill the mounting holes (Figure 3 on page 6).

3. Fit the quick-fit anchors in the ground.

4. Hit the head of the quick-fit anchor with a hammer to sprea d th e qu ick- fit an ch or in

the hole.

5. Install the mounting plate on the quick-fit anchors.

6. Mount the arm and the arm bracket on the mounting plate and secure the arm using

the two bolts from the set of small parts (Figure 4 on page 6).

7. Guide the chain through the mounted arm and secure at the rear.

8. Install the sensor on the immersed pipe.

• Installation without cleaning unit—Guide the sensor cable through the red ucer , the

elbow and the immersed pipe and bolt all pieces together (Figure 5 on page 7).

Chain Mount Kit LZX914.99.12400

• Installation with cleaning unit—Guide the sensor cable and the air tubing through

the elbow and the immersed pipe and bolt all pieces together (Figure 6 on

page 8).

9. Guide the sensor cable (or sensor cable and air tub ing ) ou t of the sid e of th e
immersed pipe (Figure 5 on page 7 and Figure 6 on page 8).

• For installation without a cleaning unit, fit the plug from the hardware set above

the sensor cable.

Important note: Ensure the sensor cable (or sensor cable and air tubing) cannot be
rubbed, crushed or cut.

10. Install the screw cap on the immersed pipe.

11. Fit the chain to the screw cap.

12. Guide the sensor cable (or sensor cable and air tubing) through the mounted arm.

Fasten the sensor cable (or sensor cable and air tubing) to the arm (e.g. using cable
ties) or leave it hanging free.

13. Check whether the chain is correctly secured in the arm, pivot the immersed tube over
the edge of the tank and align the arm and chain. Adjust the length of the chain .

a. Adjust the distance to the tank wall using the arm.
b. Set the immersion depth using the length of the chain and set the direction in

which the sensor is installed by turning the chain in the arm.

Note: Ensure the chain is always secured and cannot be pulled out of the arm. Otherwise the
sensor and chain can fall into the tank. It possible, align the sensor such that the flow arrives at
the rear.

14. Tighten all bolts.

15. Connect the sensor to a controller.

5

Chain Mount Kit LZX914.99.12400

16. When installing a cleaning unit, connect the air tubing to the compressed air supply.

Figure 3 Installing the quick-fit anchors

Figure 4 Installing on the ground

6

Chain Mount Kit LZX914.99.12400

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Figure 5 Installing on the ground without a cleaning unit

7

Chain Mount Kit LZX914.99.12400

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8

Figure 6 Installing on the ground with a cleaning unit

Installing the chain bracket on a railing

1. Find a suitable installation location and install the mounting plate on the railings using

the U-bolts.

2. Proceed as described in Installing the chain bracket on the ground on page 5, step 4.

Refer to Figure 7, Figure 8 on page 10, and Figure 9 on page 11 for rail mounting details.

Chain Mount Kit LZX914.99.12400

Figure 7 Rail mounting

9

Chain Mount Kit LZX914.99.12400

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10

Figure 8 Installing on railin gs without a cleaning unit

Chain Mount Kit LZX914.99.12400

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Figure 9 Installing on railings with a cleaning unit

11

Contact

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