Groth 2000A Bedienungsanleitung PDF herunterladen (Seite 13)

MODEL 2450A DISASSEMBLY & ASSEMBLY

ITEM DESCRIPTION ITEM DESCRIPTION

1 Body 17 Stem Guide

2 Pallet – Pressure 18 Seat – Vacuum

3 Retainer Plate – Pressure 19 Hex Bolt, 3/8-16 UNC

4 Hinge Arm 20 Flat Washer, 3/8", SS

5 Hinge Pin 21 Hex Nut, 3/8-16 UNC

6 Cotter Pin 22 Lock Washer, 3/8"

7 Hex Nut, 3/8-16 UNC 23 Pallet – Vacuum

8 Lock Washer 24 Retainer Plate – Vacuum

9 Washer, 3/8", PTFE 25 Crown Nuts, 3/8- 16

10 Diaphragm – Pressure 26 Screen

11 Diaphragm – Vacuum 27 Weatherhood Post

12 Spacer 28 Water Dam*

13 Weatherhood 29 Weight Plate*

14 Stem – Vacuum 30 Handle*

15 Hex Nut, 1/2-13 UNC 31 Spring

16 Spring Button 32 Hex Bolt, 3/8-16 UNC

* Not used on valves with low settings.

2450 DISASSEMBLY

1. Read “Warning” sections on pages 4 and 6. Remove the valve from the tank.

2. Remove hinge pin [5], and cotter pin [6] from the hinge arm and brackets.

3. Lift pressure/vacuum pallet [2] with attached assembly from body [1].

4. Using the handles [30] on the weight plate [29], or the edges of the pallet [2], lift vertically. Set the

cover on a short length of pipe (minimum 6” high) (Figure 13). This will elevate the retainer plate

peripheral guides above the table so they aren’t bent or damaged.

5. Remove crown nuts [25], lift weatherhood [13], bird screen [26] and set aside.

6. Record “A” dimension (Figure 14). Place a short length of pipe (minimum 6” high) beneath the

vacuum pallet [23] to prevent it from falling. Back the top nut [15] completely off the stem. Compress

the spring using the spring button [16] and grasp the stem (Figure 15). Caution: Remove the

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Groth 2000A Bedienungsanleitung Seite 13