Nordson 3100V Series Instruction Sheet

Level switch

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Setup Instructions for Series 3100V Level Switch

1. Introduction

2. Installation

Assembling the Low-Level

Switch

E 2000 Nordson Corporation

WARNING: Allow only qualified personnel to perform the

following tasks. Observe and follow the safety instructions in

this document and all other related documentation.

When the adhesive level in the Series 3100V melter is low, the low-level

switch magnetically closes a dry reed switch which is connected to an

external device. The external device can automatically add more

adhesive or illuminate a light that warns operators when the adhesive

level is low.

The low-level switch consists of a float switch, shield, and terminal block.

The float rides half in and half out of the adhesive. As the adhesive level

drops, the float drops, signaling the terminal block.

The switch is intended for 30 VAC maximum, 30 W, less than 0.28 A,

Class 2 circuit operation as defined in Article 725 of the National

Electrical Code.

WARNING: Hot! Risk of burns. Wear heat-protective clothing,

safety goggles, and heat-protective gloves. Hot melt material

may be release forcefully.

Follow this procedure to assemble the low-level switch

321 355A

Issued 5/00

Instruction Sheet

P/N 321 355A

41- -3000- -IS- -65

Page 1 2. Installation safety goggles, and heat-protective gloves. Hot melt material may be release forcefully. Assembling the Low-Level Follow this procedure to assemble the low-level switch Switch 321 355A 41- -3000- -IS- -65 E 2000 Nordson Corporation All rights reserved Issued 5/00...
Page 2 3. Use the two flat-head screws (7) to attach the shield (8) to the base. 4. Use the pan-head screws (3) and lock washers (4) to fasten the switch to the pump pan. See Figure 2. 41- -3000- -IS- -65 321 355A E 2000 Nordson Corporation All rights reserved Issued 5/00...
Page 3: Preparing For Installation
4. Remove the screws holding the pump pan to the tank cover. 5. Clean the tank of all debris; then remove the pump, pan, tank cover, and gaskets. 321 355A 41- -3000- -IS- -65 E 2000 Nordson Corporation All rights reserved Issued 5/00...
Page 4 8. Gasket, tank cover 3. Wire leads 6. Terminal block, 4 station 9. Customer external device wires 2. Reinstall the pump and reconnect the air supply. 41- -3000- -IS- -65 321 355A E 2000 Nordson Corporation All rights reserved Issued 5/00...
Page 5 3. Clean any debris from the tank; then fill the adhesive to within 25 mm (1 in.) of the top of the tank. 4. Turn the unit on and wait for the READY light to illuminate. 321 355A 41- -3000- -IS- -65 E 2000 Nordson Corporation All rights reserved Issued 5/00...