22
HUMIDI-TECH
®
MAINTENANCE
Standard water models
(HUMIDI-TECH
®
, continued)
2.
Loosen the four cover bolts and remove the
cover assembly from the tank.
3.
Clean the tank interior using a putty knife or
similar flat instrument.
4.
Unplug probe plug assembly. Leave ground wire
connected to tank. Unscrew the probe rod
assembly and clean the plastic probe housing,
ensuring that all passageways are clear. Clean
the probe rods using steel wool or a similar mild
abrasive material. Inspect the composite plastic
probe housing for any signs of cracking,
roughness, or deterioration. If found, replace.
5.
Install the probe and probe plug assembly. Verify
ground wire is solidly connected to tank.
6.
Secure the chamber cover, making sure the
cover gasket is seated and the chamber is
sealed.
7.
Re-install the evaporating chamber.
• Reconnect the fill line.
• Reconnect the electrical plugs
(plugs are color coded).
• Reconnect the drain union.
• Reconnect the vapor hose.
8.
Verify electrical connections.
• Verify that all DIN rail-mounted components
are securely fastened to DIN rail.
• Verify that all power terminal screws and lugs
are tight from power block to heaters. See the
table on this page for torque specifications.
• Verify that all plugs located under the
humidifier cover are completely plugged in.
9.
Move the drain valve lever back to the auto
position.
10. Turn on the water supply.
11. Turn on the electrical power.
Off-season shut-down procedure
1.
Switch off electrical power.
2.
Remove enclosure.
3.
Shut off water supply to makeup valve.
4.
Drain evaporating chamber, and clean if
necessary (see “To inspect and service” on
previous page).
5.
Replace enclosure.
6.
Leave chamber dry, power off and the water
shut-off valve closed until the next humidification
season.
Screw or lug location
Torque
Power block
1.8 Nm
Contactor
1.8 Nm
Heater nut
8.5 mm nut
2.2 Nm
9.5 mm nut
2.8 Nm
Heater wire lug
10 mm
2
wire
4.0 Nm
6 mm
2
wire
2.8 Nm
< 6 mm
2
wire
2.2 Nm
HUMIDI-TECH torque specifications
VM99-C-0302-M-0302.pdf 22
11/19/2009 9:51:09 AM
