Repair

Fluid Temperature Sensor (FTS)

Test/Removal

1. Turn main power OFF

. Disconnect power

supply.

2.Relieve pressure, page 13.

3.Remove tape and protective covering from FTS. Disconnect hose cable (F). Test with ohmmeter between pins of cable connector.

Pins

Result

 

 

 

 

1 to 2

approximately 10 ohms

 

 

1 to 3

infinity

 

 

3 to FTS groundscrew

0 ohms

 

 

1 to FTS component A

infinity

fitting (ISO)

 

 

 

F

B

A

4.If FTS fails any test, replace FTS.

5.Disconnect air hoses (C, L), and electrical connec- tors (D).

6.Disconnect FTS from whip hose (W) and fluid hoses (A, B).

7.Remove ground wire (K) from ground screw on underside of FTS.

8.Remove FTS probe (H) from component A (ISO) side of hose.

Installation

The Fluid Temperature Sensor (FTS) is supplied. Install FTS between main hose and whip hose. See Heated Hose manual 309572 for instructions.

DB

K

W

A

ISO

L

H

C

ti9581c

FIG. 10: Fluid Temperature Sensor and Heated Hoses

32

3A1570A

Page 32
Image 32
Graco A-25 important safety instructions Fluid Temperature Sensor FTS, Test/Removal, Installation