Fluid Temperature Sensor (Fts) - Graco Reactor A-20 Repair Parts

Repair

Fluid Temperature Sensor (FTS)

Check FTS operation by connecting directly to Reactor.
An alternating hose controller display of SbEr and
H0.00 indicates a loss of signal from the FTS. Two
conditions must be satisfied for proper FTS
operation:
• The sensor must be functional
• The signal must travel uninterrupted from the
sensor to the control unit
FTS Cable Test
1. Disconnect FTS cable (SS) at Reactor.
SS
2. Test with ohmmeter between pins of cable
connector.
Pins
1 to 2 Approximately 35 ohms per 50 ft
(15.2 m) of hose, plus approximately
10 ohms for FTS
Infinity
1 to 3
3. If cable fails test, retest at FTS.
20
ti8444a
Result
FTS Test
1. Turn Main Disconnect Switch OFF. Disconnect
power supply cord.
2. Relieve pressure; see page 7.
3. Remove tape and protective covering from FTS.
Disconnect hose cable. Test with ohmmeter
between pins of cable connector.
Pins
1 to 2 Approximately 35 ohms per 50 ft
(15.2 m) of hose, plus approximately
10 ohms for FTS
1 to 3 Infinity
3 to FTS ground 0 ohms
screw
1 to FTS com- Infinity
ponent A fitting
(ISO)
4. If FTS fails test, replace FTS.
Result
311512A