88226673-01-03 Technical Reference Manual - (Production Iss 03 November 2020).pdf - 第33页

Rectify lea k and empty Condensate Containe r. Ensure all moisture is removed from around the probes. Rectify continuity fault and reconnect CN10. Fault ind ic ation cleared? Are there any cond e nsate leaks? Check ACU c…

YES

Replace Contactor

Part No. 181989

Replace Control PCB

Part No. 181984

Has Contactor Operated?

Check Exhaust vent on

underside of TM TCM This

is the vent closest to the

front of the printer. Is there

a strong airflow?

Thermal Trip mounted inside the electrical compartment on

the adjacent bulkhead may have operated due to an over

temperature condition.

Is the bulkhead very hot to touch?

Turn off TCM to allow enclosure to cool and

thermal trip time to reset.

Turn TCM back on. Has fault cleared?

Warning Indication - Heater Enclosure Over

Temperature (Automatic Shutdown)

YES NO

YES

Check for Open Circuit

across Thermal Trip if

open circuit replace.

Is airflow obstructed by a blocked?

Evaporator Fan may have

failed. Replace ACU

module Part No. 202340

See install procedure

Rectify blockage or replace filter

Part No. 181944

Use TCM CCT DWG 226671 as reference for further fault

finding.

Use TM TCM CCT 226671

as a reference.

Check across contactor

coil A1 and A2. Is 24VDC

present?

YES

LED 1

Run

LED 2

Probe

LED 3

N/A

LED 4

N/A

LED 5

ACU ON

LED 6

Heater ON

LED 7

System Tripped

LED 8

Cond. bottle needs emptying

LED 9

Cond. bottle is full

LED 10

Cond bottle overflow

Rectify leak and empty Condensate

Container.

Ensure all moisture is removed from

around the probes. Rectify continuity

fault and reconnect CN10.

Fault indication cleared?

Are there any condensate leaks?

Check ACU condensate drain hose is not

blocked or kinked. Check condensate

container yellow drain cap is securely

fitted and its O ring seal is in place.

Replace Control PCB

Part No. 181984

Replace Flood Sensor Cap

Warning Indication - Overflow on Lower

Collection Tray (Auto Shutdown)

YES NO

Use TCM CCT DWG 226671 as reference for further

fault finding.

YES

Is there continuity between the two

Flood Sensor probes?

LED 1

Run

LED 2

Probe

LED 3

N/A

LED 4

N/A

LED 5

ACU ON

LED 6

Heater ON

LED 7

System Tripped

LED 8

Cond. bottle needs emptying

LED 9

Cond. bottle is full

LED 10

Cond bottle overflow

Check the second condensate

tray in the chiller (requires

removal of chiller cover), does

this solve the problem?

Remove the green connector from CN10.

Does this clear the fault indication?

Try repositioning the magnetic pipe clamps so

as to eliminate the restriction in the drainage

pipe.

Is the water now draining from the ACU?

Fault corrected

Clear the pipe and refit to ACU.

Is the ACU now draining?

Internal condensation collection tray within the

ACU may have overflown. This could be caused by

a blocked or kinked drainage pipe.

Is there a kink in the drainage pipe?

Check the nozzle on the

side of the ACU to

which the drainage pipe

is connected.

Is it blocked?

ACU has shut down with no warning indicated

Unit unable to maintain set temperature.

YES NO

YES

An internal examination of

the ACU may be required.

Please contact a support

engineer

Use TCM CCT DWG 226671 as reference for

further fault finding.

Clear blockage

Place an absorbent cloth around the

drainage outlet on the ACU and

remove the drainage pipe.

Be prepared to cap the flow of water

from the ACU it is backed up.

Is the Pipe blocked?

YES

LED 1

Run

LED 2

Probe

LED 3

N/A

LED 4

N/A

LED 5

ACU ON

LED 6

Heater ON

LED 7

System Tripped

LED 8

Cond. bottle needs emptying

LED 9

Cond. bottle is full

LED 10

Cond bottle overflow