88181945-01-06 Technical Reference Manual ( Production Iss 06 December 2020).pdf - 第20页

20 Issue 06 , December 2020 Disconnect and Shutdown Periods WARNING ELECTRICAL HAZARD. Ensure Isolator is in the OFF position before opening access door. The Contro l PC B is fitted with two rotary switches (F IG 23). FI…

19 Issue 06, December 2020

If the Condensate Container is not replaced after emptying, or refitted with the

plug still fitted, condensate will collect on the lower tray. Sensor probes at the

front of the lower tray will detect the presence of condensate and cause the

TCM to shutdown (FIG 21).

Condensate Present on

Lower Tray

(TCM Shut down)

FIG 21

Remove the cap from the lower tray to allow condensate to drain from the tray and

empty any condensate within the cap to clear the fault. The TCM will automatically

commence operation (FIG 22).

FIG 22

20 Issue 06, December 2020

Disconnect and Shutdown Periods

WARNING

ELECTRICAL HAZARD. Ensure Isolator is in the OFF

position before opening access door.

The Control PCB is fitted with two rotary switches (FIG 23).

FIG 23

DISCONNECT – This defines the period between the Temperature Signal to the TCM

being removed or disconnected and the TCM entering a SHUTDOWN period. The

DISCONNECT period is adjustable between 0 – 9 minutes in 1 minute increments. The

default setting is 1 minute. The Amber beacon will flash rapidly during the

DISCONNECT period. If the Temperature Signal to the TCM is reinstated during the

Disconnect period, the TCM will continue to run and not enter a SHUTDOWN period.

21 Issue 06, December 2020

SHUTDOWN – If on completion of the DISCONNECT period no Temperature Signal is

present, the TCM will cease operation and enter a SHUTDOWN period. The

SHUTDOWN period is adjustable between 0 – 9 minutes in 1 minute increments. The

default setting is 1 minute. The Amber beacon will flash slowly during the SHUTDOWN

period. If the Temperature Signal is reinstated during this period, the TCM will not

commence operation until the SHUTDOWN period is complete. The Amber beacon will

illuminate continuously on completion of the SHUTDOWN period with no Temperature

Signal present.

FIG 24

Preventative Maintenance

Checking the Discharge Filter

WARNING

ELECTRICAL HAZARD. Ensure Isolator is in the OFF

position before opening access door.

WARNING

BEWARE OF MOVING PARTS. Allow time for fan rotation to

cease before opening access door.

The life span of the TCM Discharge Filter (part number 181944); will vary depending on

the level of contamination of the ambient air. The filter can be deemed serviceable if the

TCM can maintain the process temperature (PV) within +/- 1°C of Target temperature

(SV) (FIG 25).