Process Technology Lufran LUF Series Manual page 52

Maintenance Procedures (Continued):
Procedure M5-2: Humidistat Replacement Procedure:
1) If the unit is in LOCAL mode, press the HEATER ON/OFF button to the OFF position. If the unit is in
REMOTE mode disable the heater from the customer supplied remote controller. This will also
prevent the heaters from energizing.
2) Shut down the unit. Turn off main power. Shut off the purge gas supply
Vérifiez que l'alimentation électrique est coupée,
et tous les périphériques de verrouillage /
débranchement nécessaires sont correctement
installés.
3) Open the rear cabinet door.
4) Remove the black plastic enclosure cover on the humidistat.
5) Remove female disconnect terminal connectors.
6) Remove screw from the center of the humidistat switch and remove the humidistat from the unit.
Install new humidistat and replace center screw to mount the switch to the unit.
Note: Do not over tighten. The humidistat device needs to be fairly loose in the black box so that the
switch setting is not impeded.
7) Replace female disconnect terminal connectors.
8) Remove electrical lockout/tag out devices as required by facility guidelines. Turn ON POWER to the
unit.
9) Perform procedure M5-1: Humidistat Inspection Procedure and verify that humidistat is operating
properly by performing the humidistat inspection procedure listed in this section of the manual.
10) Replace the black plastic enclosure cover on the humidistat.
11) Replace the rear cabinet panel.
M-43-25
Revision - Date 03-01-04-18
Verify that the electrical supply is shut off, and any
necessary lockout/tagout devices are properly
installed.
51
LUF-Series Lufran Manual
Standard outlet, Standard Interface