Russell KA-4 User Manual

PROCEDURE FOR REPLACEMENT OF

52 Date Code

Y1128 BIVE 3

GABP/5

KA-4 ADJUSTABLE BOTTOM CAP ASSEMBLIES

On Valves With Special Or Standard Superheat Settings

ools Required:

(1) – 15/16” Open End Wrench (fits valve body) (1) – 7/8” Open End Wrench (fits bottom adjustment assembly) (1) – 3/4” Open End W (1) – Dial caliper, depth micrometer, steel rule, or other tool for measuring the depth. (1) – Adjustment stem tool, 3/16” open end wrench, or small crescent wrench to

adjust bottom adjustment assembly. Must be a tool that allows the exact turns of adjustment made on the bottom adjustment assembly to be counted.

Service Ratchet Not Recommended.

Installation Instructions:

Determine if the valve has a special OEM setting. Valves with special OEM settings are indicated by a number stamped on the bottom adjustment assembly or on the valve body, e.g. 52. See Figure 2.

If the valve does not have a special OEM setting (no number/setting marked on valve) follow Steps 1 and 2, then skip to Step 3.

A special setting can be approximated using one of two possible methods, as described below in

1. Before disassembling the TEV, be sure the refrigerant pressure in

the system has been reduced to a safe level (0 PSIG).

2. Disassemble the bottom adjustment assembly and seal cap from the

valve body. ment assembly at this time. See Figure 2.

Method A

Use a dial caliper or other method for measuring the distance from the top of the bottom adjustment assembly (see Figure 1) to the spring guide surface inside the adjustment assembly. Record this measurement or mark this dimension on the tool used for measuring the depth.

Remove seal cap from bly. Adjust spring guide position to same position as measured above on to Step 3.

rench (fits seal cap)

Method A and Method B.

DO NOT remove the seal cap from the bottom adjust-

OLD bottom

NEW bottom cap assem

OLD assembly. Skip

KA-4 for Valve Types BBI*, (E)BF, (E)BQ,

(E)F, (E)Q, FB, SBF, SBQ, SQ

Valve setting indicated on valve body or bottom adjustment assembly.

SPRING GUIDE

(BBI, BQ, CBBI, (E)BF,

EBQ, RC, SBF, SBQ)

October 2004

Tool options for adjusting the stem on bottom adjustment assembly.

VALVE BODY

PUSHRODS

PIN & CARRIER

(CBI, (E)F, EQ, FB, Q, SQ)

SPRING

BOTTOM ADJUSTMENT ASSEMBLY

Method B

Remove the seal cap from the OLD bottom adjustment assembly stem out counterclockwise, counting the number of turns until you come in contact with the stop on the adjustment stem. The adjustment stem will turn freely until you come in contact

. Back the adjustment

Figure 1

Figure 2

SEAL CAP

* For straight through connections ONL

with the stop.

Remove the seal cap from the Make certain that the adjustment stem on the

NEW bottom adjustment assembly

NEW bottom adjustment

assembly is backed out counterclockwise all the way. Turn the adjustment stem on the

NEW bottom adjustment assembly clockwise the same number of turns that you backed the adjustment stem out on the OLD bottom adjustment assembly

4. Install seal cap on NEW bottom adjustment assembly and tighten

with wrenches 1/8 to 1/6 of a turn beyond hand tight. This cap is the primary seal.

5. After system is started, check and verify proper superheat setting

as recommended by the Equipment Manufacturer

3. Install NEW replacement bottom adjustment assembly. It is impor-

tant

that the PIN remains seated in the valve port, otherwise flood ing will occur. Tighten with wrenches approximately 1/4 of a turn beyond hand tight.

PRINTED IN THE U.S. OF A. SD-24B-1004