Ingersoll-Rand RR250-F30 Guida all'installazione

80174964

Edition 1

October 2005

Starter Relay Valve

RR250-F30

Installation and

Maintenance Information

Save These Instructions

280174964_ed1

WARNING

General Product Safety Information

• Important Safety Information enclosed.

• Read and understand this manual before operating this valve.

• It is your responsibility to make this safety information available to others that will operate this valve.

Safety Information - Explanation of Safety Signal Words

Indicates an imminently hazardous situation which, if not avoided, will result in death or

serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or

serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury or property damage.

Indicates information or a company policy that relates directly or indirectly to the safety of

personnel or protection of property.

DANGER

WARNING

CAUTION

NOTICE

WARNING

Failure to observe the following warnings could result in injury

• Do not use this Starter Relay Valve with natural gas or other flammable gases.

• Always bleed off the air pressure before attempting to remove the Starter Relay Valve from the Receiver or before

attempting to perform any maintenance on the Starter Relay Valve.

• Never attempt to disassemble the Starter Relay Valve until after the air pressure has been bled off. Otherwise internal

parts of the Starter Relay Valve will be blown out with the great force.

• Always wear eye protection when installing, removing or performing maintenance on this Starter Relay Valve.

NOTICE

This Starter Relay Valve is specially designed and manufactured by Ingersoll-Rand for use on Starter installations.

Install it according to the following instructions:

Assembling Relay Valve on starter

The Relay Valve must be connected with two flanges SAE 3000 - DN 2” 1/2.

NOTICE

The use of other than genuine Ingersoll-Rand replacement parts may result in safety hazards, decreased starter relay

valve performance and increased maintenance and will invalidate all warranties.

Ingersoll-Rand is not responsible for customer modification of valve for applications on which Ingersoll-Rand was not

consulted.

Repairs should be made only by authorized, trained personnel. Consult your nearest Ingersoll-Rand Authorized

Servicenter.

80174964_ed1 3

Specifications

(Dwg. 80183411)

2-1/2” ÆRR250-F30 - Order part number 16675845

ILLUSTRATION REQUIRED

Max. Inlet Pressure 30 Bar 435 psi

Max. Outlet Pressure 10 Bar 145 psi

Max. Flow 1600 dm3/s 3400 scfm

Max. Temperature 80°C 176°F

Min. Temperature -25°C -13°F

480174964_ed1

Description

The RR250-F30 includes valve and regulator functions.

The RR250 is made of three main components:

1. The master regulator which sets the pilot pressure.

2. The solenoid valve which will open or close the system

when the operator actuates the switch key.

3. The slave regulator which is the main body.

(Dwg. 80177892)

The slave regulator (3) will receive the signal from the master

regulator (1) through the solenoid valve (Fig 2). For

pre-engage Starters (Fig 1) the signal pressure will come

from the master regulator through the solenoid valve to the

pilot “In” port of the air starter drive housing, giving the signal

to engage the drive pinion into the ring gear. After engaging

the drive pinion it will come out through the “Out” port of the

drive housing and will go to the top cover of the slave

regulator.

(Dwg. 80177900)

The Slave regulator using the pressure signal on top of the

diaphragm will force the piston off its seat. That allows air to

flow into control chamber below the diaphragm, through the

outlet port of the RR250 valve to the starter motor. Outlet

pressure increases in the downstream system and sensing

chamber (under the diaphragm) and applies an upward force

on the bottom of the diaphragm. The diaphragm and piston

move upward. Upward movement stops when the forces

below the diaphragm balance the force above the

diaphragm.

(Dwg. 80177959)

(Dwg. 80177991)

Figure 1 Figure 2

80174964_ed1 5

Operation

Clockwise rotation of screw (1) will open the seat in the

master regulator and will increase the pressure between the

master regulator and solenoid valve (4). Do not try to exceed

11 bar or 160 psig. The pressure you adjust at the slave

regulator will be slightly higher than the working pressure at

the starter. In order to easily adjust the working pressure

install a gauge on port (2).

(Dwg. 80177215)

The master pressure regulator is designed as a relieving

regulator. When the pressure below the diaphragm reaches

1.5 bars over the adjusted pressure, the regulator exhausts

the excess pressure.

Schematic

For inertia drive applications:

For pre-engaged drive applications:

(Dwg. 80177223)

680174964_ed1

Relay Valve Assembly Drawing

(Dwg. 80177843)

Relay Valve Parts List

126

Item Parts Description Part Number Item Parts Description Part Number

1 Cover Screw (10) 38632121 29 Plug 118126

2 Diaphragm Cover 38747887 30 Plug 80162225

3 Diaphragm 38747895 31 Nipple 80162233

4 Diaphragm Support 38747853 32 Nipple 80162217

6 Housing 38747788 33 Adapter 38754933

9 Set Screw 80172745 * Piston Kit 38750956

10 Ring 38749990 (For RR250-F30)

18 Bottom Cover 38747796 Stem - Item no. 5

19 Bottom Cover Screw (8) 38632121 Plate - Item no. 12

20 Plug 38648192 Piston Assembly - Item no. 13

24 Mini Regulator 10548774 O-ring - Item no. 14

25 Operator and Coil 49828460 Locknut - Item no. 15

26 Solenoid Valve 49828692 Spring - Item no. 16

27 Flange Seal 38752366 O-ring - Item no. 11

28 Filter 38752333 O-ring - Item no. 17

80174964_ed1 7

Maintenance

Disassembly of Relay Valve

1. Remove screws (1). Remove cover (2) and

diaphragm (3).

2. WARNING: Bottom cover (18) is spring-loaded.

Clamp relay valve in arbor press before removing

bottom screws (19). Otherwise personal injury or

damage to parts may occur. Secure relay valve upside

down in arbor press, applying force to bottom cover.

3. Remove screws (19). Slowly raise arbor press to remove

cover (18).

4. To remove stem piston assembly: Hold diaphragm

support (4) with a spanner wrench. Turn locknut (15) with

a socket to unscrew the stem from the diaphragm

support.

5. If the locknut comes loose before the diaphragm support,

separate the piston (13), plate (12) and stem (5). Hold the

stem on the flats and unscrew the diaphragm support.

Assembly of Relay Valve

Apply Parker O-Lube grease to O-rings (11), (14), and (17),

and spring (16).

Clean with isopropyl alcohol and apply Loctite® 242 or 243 to

screws (1), screws (19), and diaphragm support (4).

1. Insert stem (5) of stem/piston assembly through ring (10)

and O-ring (11) in housing (6).

2. Tighten diaphragm support (4) on stem piston assembly

to 7.9/6.7 Nm (70/60 inch-Lbs) by holding locknut (15).

3. WARNING: Bottom cover (18) is spring-loaded.

Clamp relay valve in arbor press before installing

bottom screws (19). Otherwise personal injury or

damage to parts may occur. Secure relay valve upside

down in arbor press. Align bottom cover and apply force

to bottom cover.

4. Install eight screws (19). Tighten to 30/26 Nm

(270/230 inch-Lbs).

5. Install diaphragm (3) and cover (2).

6. Install twelve screws (1). Tighten to 25/20 Nm

(220/180 inch-Lbs).

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