Rotex 30308 User Manual

IM No.: IM/V/0015, Rev. 7
Date: 14.10.2019
Page 1 of 6
MOUNTING, OPERATING, TESTING & MAINTENANCE INSTRUCTIONS
FOR ROTEX 3/2 DIRECT ACTING HIGH ORIFICE SOLENOID VALVE
MODEL 30308, 30334, 30333, 30309, 30329
ROTEX retains all rights to this publication.
All details within this manual and the catalogue are subject to change without manner.
ROTEX will not be responsible for any damage whatsoever arising from the use of the Solenoid Valve, due to misuse
or incorrect installation or misinterpretation of the information contained herein.
VALVE MODEL-ORIFICE
FUNCTION
IN
OUT
EXHAUST
30308-5 | 30334-5 | 30333-5 | 30334-7
30309-10 | 30329-5 | 30329-7
30329-10
NC
1
2
3
NO
3
2
1
Mixing
1,3
2
-
Diverting
2
1,3
-
(A) OPERATING PRINCIPLE
NC Operation
In de-energized condition of the solenoid, applied the pressure at inlet port # 1, media passed up to the duse hole
which is blocked by plunger assembly. In this state inlet port # 1 and outlet port # 2 are disconnected. Outlet port # 2
and exhaust port # 3 are connected. Media cannot come out from the outlet port # 2.
In energized condition of the solenoid, plunger assembly moves up now when we applied the pressure at inlet port # 1
media pressure come out from the outlet port # 2 through the duse hole. In this state inlet port #1 & outlet port # 2 is
connected and exhaust port # 3 is blocked. So media comes from the outlet port # 2
NO Operation
In de-energized condition of the solenoid, applied the pressure at inlet port # 3. In this state inlet port # 3 and outlet
port # 2 are connected. Outlet port # 2 and exhaust port # 1 are disconnected. Media come out from the outlet port # 2.
In energized condition of the solenoid, plunger assembly moves up now when we applied the pressure at inlet port # 3.
In this state inlet port # 3 & outlet port # 2 disconnected and outlet port # 2 and exhaust port # 1 are connected. So
media cannot come out from the outlet port # 2.
MIXING OPERATION
Inlet at Port 1 and Port 3 are alternately connected to port 2 when the solenoid is energized / de-energized.
DIVERTING OPERATION
Inlet at Port 2 is alternately connected to Port 1 or Port 3 when solenoid is energized / de-energized.
VALVE MODEL 30308, 30334

Rotex 30308 Specifications

General

Brand	Rotex
Model	30308
Category	Control Unit
Language	English

Summary

Operating Principle

NC Operation

Explains operation when the solenoid is de-energized and energized for NC configuration.

NO Operation

Explains operation when the solenoid is de-energized and energized for NO configuration.

Mixing Operation

Describes how inlet ports 1 and 3 are alternately connected to port 2.

Diverting Operation

Describes how inlet port 2 is alternately connected to port 1 or port 3.

Solenoid Valve Identification

Valve Marking

Explains markings on the ROTEX Solenoid Valve, including logo, model, port connection, and material.

Solenoid and Port Identification Details

Solenoid Marking

Details markings on the solenoid itself, including type, voltage, and construction.

Port Identification

Explains markings for NPT, Metric, and BSP threads on valve ports.

Warranty Note

States that products without markings are out of warranty and at risk.

Mounting and Installation Procedure

Installation Prerequisites

Covers storage, handling, flushing, pipe ID, filters, and media compatibility for installation.

Installation Precautions

Includes warnings against modification, use in hazardous areas, and connection details.

Component Replacement Recommendation

Advises replacing rubber parts, including the plunger assembly, after 2 years.

Electrical Connections and Solenoid Requirements

Electrical Connection Guidelines

Details verifying nameplate, power supply, and junction box connections for electrical setup.

Solenoid Selection and Environment

Covers solenoid type, construction, and suitability for hazardous locations and environment.

Solenoid Compatibility Note

Mentions limitations for Intrinsically Safe Solenoids and specific valve models.

Manual Override Operation

Push & Turn Type (M6)

Explains the operation of the manual override for the M6 type (Push & Turn).

Push Type (M8)

Explains the operation of the manual override for the M8 type (Push).

Valve Testing Procedures

Periodic Testing Guidelines

Outlines checks for pressure, leakage, manual override, and solenoid resistance.

Insulation Resistance Test

Specifies testing solenoid insulation resistance with 500V DC, requiring over 100 Mega Ohms.

Maintenance Recommendations

Recommended Spares

Lists recommended spare parts including Seal Kits, Repair Kits, and Solenoid Kits.

Preventive Maintenance Schedule

Defines preventive maintenance intervals for O-rings, plunger assemblies, and solenoids.

General Maintenance Instructions

Provides general guidance on safe maintenance, connections, cleaning agents, and O-ring handling.

Component Replacement Procedures

Solenoid Replacement

Details steps to remove and replace the solenoid, including torque specifications.

Guide Assembly and O-Ring Replacement

Outlines procedures for replacing the guide assembly, plunger, and O-rings.

Manual Override Replacement

Manual Override Replacement Procedure

Describes steps for replacing the manual override, including lubrication and screw adjustment.

Storing and Cleaning Elastomers

Elastomer Storage Guidelines

Provides instructions for storing elastomers like O-rings in cool, dry, dust-free areas.