DriSteem Vapormist Humidi-tech CRUV Manuel page 5

Va p o r m i s t / H u m i d i - t e c h / C R U V, s t a n d a r d w a t e r, s e r v i c e i n s t r u c t i o n s
Vapormist service
1. Remove the evaporating chamber:
a. Remove the two fasteners on each side of the cover
enclosure (see Enclosure Screw Cap inset on page 3)
b. Remove the enclosure.
W A R N I N G !
Do not remove the humidifier electrical panel cover or the
heater terminal cover until electrical power is disconnected.
Contact with energized circuits can cause property damage,
severe personal injury or death as a result of electrical shock.
c. If the Vapormist has an SDU mounted directly above it,
the SDU cover must be removed before removing the
humidifier cover.
d. If the tank is hot, cool it down first (see cool‑down
instructions on facing page).
e. Shut off the water supply.
f. Allow the tank to drain completely.
g. Shut off the electrical supply.
h. Disconnect the fill line at the supply side of the fill
valve.
i. Disconnect the electrical plugs between the tank
components and the back of the electrical panel
(includes: power plug, fill plug, drain plug, water level
control plug, tank temperature sensor plug and thermal
trip plug).
I m p o r t a n t : Disconnect by pulling on plug
housing. Do not disconnect by pulling on cord or
wires.
j. Disconnect the drain union on the back left corner of
the frame.
k. Disconnect the steam supply hose from the top of the
tank.
l. Lift the tank foot above the frame flange and slide the
tank assembly forward to remove.
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. Clean the probes:
a. Unplug probe plug assembly. Leave ground wire
connected to tank.
b. Unscrew the probe rod assembly using the probe tool
connected to a 3/8" square drive.
DRI-STEEM Vapormist/Humidi-tech/CRUV, Standard Water, Service Kit Manual • Page 5
c. Inspect the probe housing and clean, ensuring that all
the housing passageways are clear. Remove the housing
from the holding bracket by sliding the housing
horizontally toward the open end of the bracket.
• The scale should flake off easily from the probe
assembly rods.
• The bottom 3/8" (10 mm) of each rod is the sensing
portion; clean these areas with a wire brush,
abrasive pad, or steel wool.
d. Inspect the composite plastic probe rod assembly for
any signs of cracking, roughness, or deterioration. If
found, replace probe assembly.
e. Reassemble and install the probe and probe plug
assembly. Verify ground wire is solidly connected to
tank.
5. Secure the chamber cover, making sure the cover gasket is
seated and the chamber is sealed.
6. Re‑install the evaporating chamber:
a. Reconnect the fill line.
b. Reconnect the electrical plugs (plugs are color coded).
c. Reconnect the drain union.
d. Reconnect the vapor hose.
7. Verify electrical connections:
a. Verify that all DIN rail‑mounted components are
securely fastened to DIN rail.
b. Verify that all power terminal screws and lugs are tight
from power block to heaters. See the table below for
torque specifications.
Table 5-1:
Vapormist torque specifications
Screw or lug location
Power block
Contactor
8-32 (8.5 mm) nut
Heater
nut
10-32 (9.5 mm) nut
6 gauge (10 mm
Heater
8 gauge (6 mm
wire lug
10-14 gauge (<6 mm
c. Verify that all plugs located under the humidifier cover
are completely plugged in.
8. Move the drain valve lever back to the auto position.
9. Turn on the water supply.
10. Turn on the electrical power.
Torque
inch - lbs N-m
16
16
20
25
2 ) wire 35
) wire 25
2
) wire 20
2
mc_060208_1055
1.8
1.8
2.2
2.8
4.0
2.8
2.2