Graco 26R310, Руководство по ремонту и запасным частям

Страница: 38 / 82

Repair
38 3A8501A
Troubleshoot Heated Hose
Refer to your heated hose manual for replacement hose
parts.
Check Hose Wires for Continuity
1. Follow Shutdown on page 20.
NOTE: The whip hoses must be connected,
otherwise the hose connectors at the end of the
hose must be connected to each other.
2. Disconnect hose electrical connectors (D) at the
Reactor.
3. Test continuity between both sets (HS).
4. Use an ohmmeter to check between the hose
wires. There should be continuity between both A
(red) connectors and continuity between both B
(blue) connectors.
5. If the hose fails the test, retest at each length of
hose from the system out to the gun including whip
hose, until the failure is isolated.
6. Replace the broken section of hose.
Check Hose RTD Cables and FTS
1. Follow Shutdown on page 20.
2. Disconnect RTD cable (212) at the Reactor.
3. Test with an ohmmeter between the pins of cable
connector.
NOTE: Do not touch the outer ring with the test
probe.
4. Retest at each length of hose, including whip hose,
until the failure is located.
5. If the FTS is not reading properly at the end of the
hose, connect the FTS with the splitter directly to
RTD cable (212) connected to the Reactor.
NOTE: You can also check each FTS
independently with an ohmmeter between pins as
shown below.
ti41007a
D
HS
Pins Result
1 to 3 and
4 to 3
See RTD Resistance vs. Temperature
table on page 39. A-Side
1 to 5 and
4 to 5
See RTD Resistance vs. Temperature
table on page 39. B-Side
1 to 4 0.2 - 0.4 ohms at the FTS (each 50 ft
cable adds 0.75 ohms)
2 to any Infinity (open)
Pins Result
1 to 3 See RTD Resistance vs. Temperature
table on page 39. A-Side
4 to 3 See RTD Resistance vs. Temperature
table on page 39. B-Side
1 to 4 0.2 - 0.4 ohms at the FTS
2 to any Infinity (open)
ti41008a
1 2
4 3
5
ti41009a
1
2 4
3