DriSteem CRUV-DI-8, CRUV-DI-2, CRUV-DI-4, CRUV-DI-6, CRUV-DI-10 Installation Instructions And Maintenance Operations Manual

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Page 1

READ AND SAVE THESE INSTRUCTIONS

DRI-STEEM

CRUV

ELECTRIC STEAM HUMIDIFIER

Installation Instructions

and

Maintenance Operations Manual

For Toll-Free Customer Support,

Call: 1-800-328-4447

cETL LISTEDETL LISTED

Page 2

TABLE OF CONTENTS

TO THE PURCHASER AND THE INSTALLER

Thank you for purchasing our CRUV you total satisfaction and many years of trouble-free service. Proper installation and operating practices will assure you of achieving that objective. We therefore urge you to become familiar with the contents of this manual.

CRUV Humidifier......................................................................... 3

Installation .................................................................................. 4

Specifications, Capacities, and Dimensions ............................6

Start-up and Operation ............................................................... 8

Maintenance ................................................................................ 9

humidification equipment. We have designed and built this equipment to give

DRI-STEEM Humidifier Company

Trouble-Shooting Guide............................................................. 10

Replacement Parts ...................................................................... 1 4

Maintenance Service Record ..................................................... 1 9

Two-Year Limited Warranty........................................................ 20

Page 3

CRUVTM HUMIDIFIER

Figure 3-1: The CRUV Humidifier

(CRUV 6-25 shown, CRUV 2, 4, 30, and 34 not shown)

Probe

Steam outlet

Strainer

Fill

valve

Over

flow

Electric drain

Heater terminal cover

Cover

Cover bolts

Heater element

Tank temperature sensor

OM-770-1

Figure 3-2: The CRUV-DI Humidifier

(CRUV-DI 6-25 shown, CRUV-DI 2, 4, 30, and 34 not shown)

Float switch

Steam outlet

Water

supply

Over

flow

Heater terminal cover

Cover

Cover bolts

CRUV Humidifier

This humidifier is designed to be used with either softened or unsoftened water (softened water will greatly reduce humidifier maintenance and improve overall system performance). The probe-type level control system requires water conductivity of at least 100 micromhos/cm (2 grains/gal or 34.2 mg/liter) to function, and therefore, will not operate with demineralized water. For humidification using demineralized water, see CRUV-DI below.

CRUV-DI Humidifiers

The evaporating chamber of this humidifier is constructed of corrosion-resistant stainless steel alloy to resist the corrosive effects of mineral-free water. Since the CRUV-DI humidifier is designed for use with deionized or RO demineralized water, there is no need to clean the unit, although an annual inspection of the evaporating chamber is recommended.

½" SST

ball valve

Heater element

Tank temperature sensor

OM-770-2

Page 4

INSTALLATION

Locate the CRUVTM humidifier near an electric power source, water supply and a drain. Verify that sufficient room is provided for a water seal in the drain piping. Refer to Figure 4-3.

In an Air-Conditioning Unit

When installing a humidifier inside an air conditioning unit, provide adequate support; allow easy access for removing and servicing the evaporating chamber, and provide adequate clearance to install the vapor hose and dispersion tube (see figure 4-1) and water seal. Refer to page 6 for mounting hole locations.

In a Duct

When installing the dispersion tube in a duct, allow for a continuous pitch of the vapor hose back to the evaporating chamber. Otherwise, use a water seal and drain (see examples in figures 4-2 and 5-1). The dispersion tube can also be placed vertically in the duct with some models (see figure 5-2).

Place the control cabinet or electrical sub-panel in a grounded protective metal enclosure and mount in a dry and accessible location.

Examples of Installation in an Air Stream Figure 4-1: Installation in an Air-Conditioning Unit

If draining the evaporating chamber by gravity is not possible, use a small condensate lift pump, rated to pump 212° F/100°C water.

Figure 4-2: Horizontal Dispersion Tube

Duct

Vapor Hose

OM-2006

Figure 4-3: Piping for the CRUV

Water seal must

not be above

bottom of frame

12" (305 mm)

Note: provide 1"

(25 mm) air gap to

eliminate back

siphonage Floor drain

Sanitary

sewer

OM-2008

OM-2003-1

Horizontal mounting of dispersion tube in a duct, connected via vapor hose to a wall-mounted CRUV humidifier.

Page 5

INSTALLATION

Piping

Water make-up piping should be of corrosion-resistant, code-approved material (copper, steel, or plastic). The final connection size is ¼" NPT. In cases where water hammer is possible, a shock arrestor should be considered.

Drain piping should be of code approved material (copper, steel, or plastic rated for 212°F/100°C minimum). The ¾" O.D. copper sweat connection should not be reduced in size. (See figure 4-3).

If there is no sewer available for drainage, the unit can be piped for manual drainage. Consult factory for instructions.

Wiring

The CRUVTM is designed for a single source of electric power supply. Future tank removal will be easier if plugs or quick connects and extra long conduits are used to provide electrical power to components from subpanel. Wiring must meet all electrical codes, the current characteristics, and capacity requirements should be checked against the nameplates. The electrical subpanel should be mounted in a location convenient for service. Wiring must be in accordance with all governing codes, and with the humidifier wiring diagram. The wiring diagram(s) are shipped loose with the unit. The wiring between the control cabinet and humidifier must be rated at 105°C, 600V.

Caution: Only qualified electrical personnel should perform installation procedures.

Figure 5-2: Vertical Dispersion Tube

Duct

OM-775-1

The dispersion tube can be mounted vertically in the duct. Note: When dispersion tube is more than 10' (3 m) from unit, insulated, 1½" (38 mm) diameter minimum rigid tubing or pipe should be used instead of vapor hose. This application

is not recommended for CRUV-10 through CRUV-34.

Figure 5-3: RAPID-SORB® Rapid Absorption Tube Bank

Duct

Figure 5-1: Horizontal Dispersion Tube Lower Than Humidifier

Duct

6" (152 mm)

Tee

8" (200 mm) Water Seal

When horizontally mounting the dispersion tube in an air stream that is located lower than the CRUV humidifier a water seal (to prevent steam from escaping at the open drain) must be provided in the drain line and line extended to open drain, as shown, to drain the condensate. A multiple dispersion

tube bank must be used with a CRUV-30 or CRUV-34 because of its high output (see figure 5-3).

OM-774-1

OM-831-1

When rapid absorption is extremely critical, a RAPID-SORB multiple-tube bank can provide 100% steam absorption within three feet or less - at any duct temperature. A multiple tube or

RAPID-SORB dispersion system is required for CRUV-30 or CRUV-34.

For complete information on calculating the number of dispersion tubes required to satisfy steam absorption distance requirements, consult your sales representative, the DRI-STEEM factory, or use DRI-STEEM's DRI-CALC Humidification Sizing and Selection Software.

Page 6

SPECIFICATIONS, CAPACITIES, AND DIMENSIONS

CRUVTM Mechanical/Electrical Specifications

Top view

OM-2004

End Elevation

OM-2002

15.0

G 4.25

4.25 C

Side Elevation

(CRUV 25, 30, 34)

OM-759-1

0.250

Table 6-1: CRUV Dimensions (in inches)

ledoMABCDEFGH

4&2-ID-VURC/VURC

01&8,6-ID-VURC/VURC

61&21-ID-VURC/VURC

NOTE: Charts shown here can be used for CRUV-DI sizing.

.ni53.4105.5100.988.705.1144.1183.26.6

mm46349392200229219233.067.761

.ni53.4100.6183.4188.888.6149.2150.53.9

mm46360456352292492372.8212.632

.ni53.4100.6183.4186.0188.6157.4150.53.9

mm46360456317292457372.8212.632

.ni53.4100.6183.4152.2188.6152.6150.53.9

43&03,52,12-ID-VURC/VURC

mm46360456311392431472.8212.632

Table 6-2: CRUV Mechanical/Electrical Specifications and Capacities

2-VURC

2-ID-VURC

ruoh/tuptuO

)gk/lag/sbl(

)gk/sbl(

.twgnippihS

*)gk/sbl(

:taspmA

ø1/v021 ø1/v802 6.92.918.825.83 --------

***ø1/v032 0.80.610.429.139.93 -------

ø1/v042 3.87.610.523.337.14 -------

ø1/v084 2.43.85.217.618.020.522.923.338.34 ---

ø1/v006 3.37.60.013.317.610.023.327.620.537.14--

ø3/v802 -**7.61**0.52**3.33**1.923.339.834.44 ----

ø3/v042 -**4.41**7.12**9.82**3.529.827.335.83 ----

ø3/v004 -**7.8**0.31**3.71**2.513.712.021.323.031.633.34-

ø3/v084 -**2.7**8.01**4.41**6.214.418.612.913.521.031.639.04

ø3/v006 -**8.5**7.8**5.11**1.015.115.314.512.021.429.827.23

Wk0.20.40.60.80.010.21410.610.120.520.030.43

7.2/7./64.5/4.1/212.8/2.2/819.01/9.2/426.31/6.3/034.61/4.4/631.91/5/248.12/8.5/840.92/7.7/360.43/0.9/574.14/9.01/093.64/2.21/201

.twgnitarepO

02/3402/4483/3883/3854/00154/00193/5854/00115/31115/31135/71135/711

8/819/9181/0481/0402/4402/4481/7302/4412/7412/7432/1532/15

7.61 -----------

* Add 9 lbs (4 kg) to total weight for models with pre-wired subpanel. ** For wire sizing, highest leg draw is due to current unbalance in some cases. *** Output capacity and kW derate of 7%.

4-VURC

4-ID-VURC

6-VURC

6-ID-VURC

8-VURC

8-ID-VURC

01-VURC

01-ID-VURC

21-VURC

21-ID-VURC

41-VURC

41-ID-VURC

61-VURC

61-ID-VURC

12-VURC

12-ID-VURC

52-VURC

52-ID-VURC

03-VURC

03-ID-VURC

43-VURC

43-ID-VURC

Page 7

START-UP AND OPERATION

Start-up and Checkout Procedures

After the system has been properly installed and connected to both electrical and water supplies, it may then be started.

Mounting

Check mounting to see that the unit is level and securely supported before filling with water. Refer to page 6 for mounting hole locations.

Piping

Verify that all piping connections have been completed as recommended and that water pressure is available. Refer to page 5.

Electrical

Verify that all wiring connections have been made in accordance with all governing codes and the enclosed wiring diagram. Refer to page 5.

Caution: Only qualified personnel should perform start-up procedure.

LW417 Electronic Water Level Control Module

When the power is activated, the solenoid-operated water fill valve will open, filling the evaporating chamber. Filling will continue until water reaches level A (figure 8-1), at which time the fill valve will close. To ensure that a water seal is created in the field-installed water seal, disconnect probe plug and cable from probe rod assembly (located on the top of the tank), allowing the fill valve to reenergize and overfill humidifier tank. This process will take only seconds; probe plug and cable must then be reconnected. A call for humidity will then energize the heating element.

Water Refill

During operation, when the water line drops below level B the fill valve opens, and remains open until the water line returns to level A (figure 7-1).

Heater Protection

Should the water line ever drop below level C, the heaters are de-energized and remain OFF until the water line has been restored to level C. This feature provides heater protection in the event of a low-water condition.

Figure 7-1: Electronic Probe Control for Maintaining Proper Water Level (CRUVTM)

A B C

OM-211-2

A simple three-probe conductivity sensor cycles a solenoid-operated water fill valve to maintain the proper water levels.

The CRUVTM humidifier is available with either the standard LW 417 Electronic Water Level Control Module or the optional VAPOR-LOGIC system. If your system is equipped with the VAPOR-LOGIC3 system, see the

Operations and Maintenance Manual

Then continue reading this manual beginning at the maintenance section on page 9.

microprocessor control

VAPOR-LOGIC

for more information.

Drain/Flush Feature

This control module contains an integral electronic timer which tracks the humidifying time of the unit. When this accumulated time reaches what has been set in the timer, the drain/flush cycle is activated. Upon activation, the following sequence occurs:

1. The drain valve opens and begins to drain surface water and minerals from the evaporating chamber.

2. When the height of the water drops below level "C", this will allow the flush cycle to start.

3. Once the flush period starts the drain and fill valves will remain open 1-3 minutes, flushing the chamber.

4. After 10 minute Drain/Flush feature, the drain valve then closes, the chamber refills, and the fill valve closes. The timer resets and the unit resumes normal operation.

The electronic timer comes factory-set for drainage after 40 hours of operation. Alternate settings of 20 hours and 80 hours are available. See wiring diagram(s) attached to unit for timer board location and instructions for changing the timer setting.

Page 8

START-UP AND OPERATION

Test Cycling the Drain/Flush System

The level control board incorporates a set of slide switches which are marked 1 through 8. To test:

1. Place "SWI" slide switches 1,2 and 3 to off position.

2. Set the humidistat high enough so that unit will remain

“on call” for at least 15 minutes.

3. After about 2 minutes of operation, activation will take place, causing the drain valve to open. The water level will then drop to level C (see figure 7-1 on page 7) and allow the fill valve to open. Both valves will remain open for the remainder of Auto/Flush period.

4. The drain valve will then close, and the water level will rise to level A (see figure 7-1 on page 7), causing the fill valve to close.

5. Once the test cycle is complete, return slide switches back to the desired operating mode. Failure to do so

will result in a drain/flush cycle every 2 minutes.

CRUVTM Make-up Water Piping

If the water pressure is above 60 psi (414 kPa) and/or water hammer would be objectionable, a pressurereducing valve or shock arrester should be installed. Even though the humidifier has an internal 1" (25 mm) air gap, some local codes may require a vacuum breaker.

Important: Minimum water supply pressure is 25 psi (170 kPa). Maximum water supply pressure is 80 psi (552 kPa).

CRUV-DI Water Level Control System

The basic float valve water level system and float switch circuit for heater protection in the event of a low-water condition is common to all DI humidifiers and can be found in the wiring diagram shipped with the unit.

CRUV-DI Start-Up Procedure

a) Adjust humidistat to "call" setting. b) Open shut-off valve on water supply line. Unit should

begin filling with water through the fill valve.

c) Shortly before the fill valve shuts off, the float

operated heater cut-off switch will "make." When this switch makes, the heating element contactor(s) will be actuated. A time delay relay circuit prevents contactor chatter due to bouncing of heater cut-off float.

d) Check heater cut-off circuit.

1. Close manual valve on water supply.

2. Open drain valve and start draining unit.

3. When water level drops past switching level on the heater cut-off float, the heating element contactor(s) will drop out.

4. When step 3 has been satisfactorily completed, close drain valve.

e) Check function of field-installed safety controls,

such as the fan proving switch. Contactor(s) should drop out when the proving switch is "open."

f) Check heater draw by testing and recording voltage

and amperage in each phase. Readings should match name plate readings; name plate is located on the humidifier housing.

g) Inspect installations for steam or air leaks while

operating the humidifier. Any leaks should be sealed.

Inspect after first three months of duty. The best way to determine how often your particular system will need maintenance is to remove the cover and inspect it after its first three months of duty. Potable water carries a variety of minerals and other materials in a mix that varies from location to location. This variation in water quality, combined with the hours of operation and duty cycle, will determine your own unique maintenance schedule.

Water quality makes a difference

1. Light to moderately hard water (2 to 10 grains/gallon or 34.2 to 171 mg/1 hardness)

• annual cleaning

2. High mineral content water (more than 10 grains/ gallon or 171 mg/1 hardness)

• cleaning frequency determined by use and water

quality

• periodic drain and flush cycles

3. DI/RO water (Model VMDI)

• no regular cleaning required (although regular

inspections are advised)

• no drain and flush cycles required

• the presence of chlorides in DI water will

eventually cause pitting and failure of the tank and its components

4. To dramatically reduce mineral accumulation inside

the evaporating chamber, softening of the makeup water recommended. (Solids like silica are not removed in the the softening process.)

Page 9

MAINTENANCE

CRUVTM Humidifier

(Non-DI humidifiers with either the LW 417 or VAPOR-LOGIC

Mineral Precipitate

As evaporation takes place in the CRUV humidifier, some of the minerals dissolved in the water precipitate out and float on the water surface. The minerals not removed by the skimmer will settle to the bottom of the evaporating chamber.

Cleaning the Evaporating Chamber

The heating element itself is self-cleaning. The mineral buildup on the element flakes off after reaching a thickness of about 1/16" (2 mm), and settles to the bottom of the chamber.

Long heater element life can be expected when the operation of the humidifier is observed for a few weeks following initial start-up. By observing the mineral build-up rate, the frequency of both drain/flush use and manual cleaning can be determined and adjustments made.

CAUTION: Before this mineral scale builds up on the underside of the heating element, it must be removed. Failure to do so may result in premature heater burnout.

The CRUV humidifier is designed for convenient cleaning and maintenance.

To Inspect and Service:

1. Shut off all eletrical power to humidifier. Drain evaporating chamber by manually opening DRAIN valve. Do this by moving lever on valve to MANUAL position and lock in place. If the tank is hot, cool it down by opening the manual valve on the side of the tank. The float valve will open allowing cool water to run into the tank until it is cool enough to handle.

2. Unscrew probe-rod assembly. Scale should flake off easily. Build-up on tips should be scraped off to remove any mineral residue.

3. Remove the tank cover and wet vac minerals out of tank (recommended).

4. To remove tank for cleaning, disconnect drain line union, fill valve supply line, electrical connections to drain, (disconnecting field wiring in conduit is NOT recommended,) thermal trip, heaters, fill valve, and probe. Disconnect steam hose from top of tank and remove mounting bracket fasteners.

5. Remove evaporating chamber and clean.

6. Install the probe and probe plug assembly. Verify that ground wire is connected.

7. Replace tank cover, making sure tank is sealed tight.

Control Systems)

8. Reconnect drain line union, fill valve supply line, electrical connections to drain, thermal trip, heaters, fill valve, and probe. Connect steam hose to top of tank.

9. Verify drain valve lever is in AUTO position.

10. The CRUV humidifier is again ready to humidify.

Off-Season Shutdown

1. Switch off power.

2. Turn off water supply to make-up valve.

3. Drain evaporating chamber and clean if necessary (see steps 1 through 9 above).

4. Leave chamber dry, power OFF and water shut-off valve closed until the next humidification season.

CRUV-DI Humidifier

To Service

1. Manually open drain valve.

2. Allow time for the evaporating chamber to cool. If the tank is hot, cool it down by moving the valve lever located on the back of the drain valve to the manual open position – the fill valve will eventually open allowing cool water to run through the tank until it is cool enough to handle.

3. Shut off electrical power to unit.

4. Shut off water supply to make-up valve.

5. Make sure evaporating chamber is drained.

6. Unscrew four cover bolts and remove cover.

7. Check operation of float valve and low-water cut-out.

8. Inspect heating elements.

9. Inspect evaporating chamber and clean if necessary.

10. Inspect cover gasket, and replace if necessary.

11. Replace chamber cover.

12. Verify drain valve is in the closed position.

13. Open water supply valve and turn on electric power.

14. CRUV-DI humidifier is again ready to humidify.

15. If necessary, remove tank as follows: Remove flexible vapor hose from tank. Close drain valve. Disconnect unit from drain and supply water lines. DO NOT DISCONNECT ANY OF THE ELECTRICAL CONDUITS.

Off-Season Shutdown Procedure

1. Switch off electrical power to unit.

2. Check overall appearance of unit.

3. Shut off water supply to make-up valve.

4. Drain evaporating chamber by manually opening drain valve.*

5. Visually check electrical components of subpanel.

6. Leave chamber dry, power off, and water shut-off valve closed until the next humidification season.

* With VAPOR-LOGIC3 option, the evaporating chamber is automatically drained after 72 hours without a call for humidity when the endof-season drain option is ordered.

Page 10

CRUVTM TROUBLE-SHOOTING GUIDE (LW417 Electronic Water Level System Only)*

MODULE INDICATING

LIGHTS PROBLEM FULL READY DRAIN POSSIBLE CAUSE RECOMMENDED ACTION

WATER

Humidifier will Off Off Off Control transformer Verify control voltage across secondary not heat leads of transformer. Reset transformer

circuit breaker.

On On Off Humidistat is not calling Set humidistat to call. Inspect for faulty

Safety controls open Check safety controls, air flow switch, high

Faulty control board Verify control voltage between terminals.

Probe head deterioration** Replace probe head.

Humidifier will Off Off Off No water pressure at valve. Check water supply/shut off valves. not fill

Faulty water fill valve Verify action of fill water solenoid valve by

Plugged strainer Check strainer. Plugged valve Check valve. Faulty control board Verify control voltage across input terminals

Humidifier does Off Off Off Lack of tank to probes Jumper wires violet, orange then brown to not stop filling electrical continuity. Water ground. If water stops, verify tank ground;

conductivity 100 check water supply conductivity; then microSiemens/cm (2 gr/gal) min. consult factory.

humidistat.

limit humidistat, etc.

turning control module switch from standby to normal op. Audible click should be heard as solenoid operates.

"B&W"

Off Off On Auto-drain mode 10 Minute must complete first.

Low output On On Off Electric drain valve not Correct cause of leakage or replace valve.

On On Off Fill valve is stuck open Check valve for foreign matter.

Unit short cycles

Reduced or no On On Off Heater malfunctioning Verify that proper voltage is being applied to output even heaters. Check heater (amp draw and though water compare to wiring diagram ratings). is at the proper level

*For VAPOR-LOGIC3 trouble-shooting, see the VAPOR-LOGIC3 Operations and Maintenance Manual. **Probe rod corrosion or probe head material aging may cause level control system failure. This generally does not occur in the first two years of operation.

On & Off

On Off Probes may be incorrectly Confirm that unit is wired per diagram.

Fill valve is stuck open Check valve for foreign matter. Drain Valve not closed Check for correct water flow through valve

Fill valve installed backward note arrow.

seating

wired or need cleaning Clean probe rod tips with steel wool.

Malfunctioning control Heater contactor not functioning--replace. system Service fuses blown. Auxiliary limit controls

not allowing system to operate (dust humidistat, air flow proving switch, etc.). Reset, replace or calibrate as required. Faulty or inaccurate humidistat, replace or calibrate.

Page 11

CRUVTM-DI TROUBLE-SHOOTING GUIDE

PROBLEM POSSIBLE CAUSE RECOMMENDED ACTION

Humidifier will not heat

Humidifier will not fill

Water fl o at valve does not close

Control transformer Verify control voltage across secondary leads of

transformer. Reset transformer circuit breaker. Humidistat is not calling Set humidistat to call. Inspect for faulty humidistat. Safety controls open Check safety control. (Air flow switch, high limit

humidistat, etc.)

Low water float switch Verify control voltage from float switch and transformer

secondary common. No water pressure at valve C heck manual water supply. Valve, minimum 25 psi

wa te r pres s u re. Malfunctioning water float valve Check to make sure that valve float & stem moves

freely. Plugged float valve Check float valve seat. Open drain valve Obstruction in drain valve wil l not all ow complete

closure, clean or replace valve. Manual drain valve not closed Close drain valve.

Malfunctioning float valve Float ball has water leak. Float valve seat defective,

replace.

Reduced or no output even though water is at the proper level

Water passing into overflow stand pipe

Float valve stuck Obstruction will not allow float valve to seat properly,

Heater malfunctioning Verify that proper voltage is being applied to heaters.

Malfunctioning control system Heater contactor not functioning, replace. Service

Time delay/interlock relays Relay delay on time is 10-15 seconds. Check relays. Low water cut-off switch Check for proper operation.

Readjust float valve rod, so water level reaches 1/4-

3/8" from overflow edge when water is at ambient or

cold state. Excessive water pressure, 80 psi maximum.

clean or replace with new seat.

Check heaters (amp draw and compare to wire

diagram rati ngs).

fuses blown. A uxil i ary limit controls not allowi ng

system to operate (duct humidi stat, air flow proving

switch, etc.). R eset, replace, or calibrate as required.

Faulty or inaccurate humidistat, replace or calibrate.

Page 12

CRUVTM TROUBLE-SHOOTING GUIDE (VAPOR-LOGIC

only)

PROBLEM POSSIBLE CAUSE RECOMMENDED ACTION

Humidifi er does not heat.

Humidifier will not fill.

Incorrect or nonexistent supply voltage to unit

Incorrect or nonexistent control voltag e

Humidistat not calling Set humidistat to call. Inspect for faulty humidistat.

Safety controls open Check safety controls, air flow swi tch, and high limit humidistat.

No water pressure at valve Check w ater supply/shut-off valves.

Faulty water fill valve Check for 24 volts at the fill valve.

Plugged strainer Check strainer.

Plugged valve Check valve.

Faulty control board Veri fy control voltage across the fill valve output.

Check main line safety switch. Check main line fuses. Check for proper supply voltage.

Reset control transformer circuit breaker. Check for 24 VAC control circuit voltage at T-1 and T-2 on the control board.

Humidifier does not stop filling.

Low output

Unit short-cycles.

Reduced or no output even

Lack of tank to probe electrical continuity. Water conductivity must be 100 microSiemens/cm (2 gr/gal)

Fill valve stuck open C heck valve for foreign matter.

Drain valve not closed Fill valve installed backward

Autodrain mode Humidifier may be in periodic drain and flush. Check controller

Electric drain valve not seating Correct the cause of leakage or replace valve.

Fill valve stuck open C heck valve for foreign matter.

Controller cycle rate set too low Review controller cycle set point.

Heater malfunctioning Verify that proper voltage is being appli ed to heaters. Check heater

though water is at the proper level

Malfunctioning control system Replace heater contactor if not functioning. Verify auxiliary limit

*Probe rod corrosion or probe head material aging may cause level control system failure. This generally does not occur in the first two years of operation.

Add salt to the tank. If this solves the problem, consult factory for further advice.

Check for correct water flow through valvee by noting arrow.

display.

amp draw and compare to wiring diag ram ratings.

controls (humidistat, air flow proving swi tch, etc.) and reset, replace or calibrate as needed.

Page 13

CRUVTM-DI TROUBLE-SHOOTING GUIDE (VAPOR-LOGIC

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gninoitcnuflamretaeH retaehkcehC.sretaehotdeilppagniebsiegatlovreporptahtyfireV

.evlavecalper

desolctonevlavniardlaunaM.evlavniardesolC

.reppotsevlavnrowro

.)sgnitarmargaidgniriwoterapmocdnawardpma(

metsyslortnocgninoitcnuflaM .nwolbsesufecivreS.ecalper,gninoitcnuftonrotcatnocretaeH

tsud(etarepootmetsysgniwollatonslortnoctimilyrailixuA

etarbilacroecalper,teseR).cte,hctiwsgnivorpwolfria,tatsidimuh

.etarbilacroecalper,tatsidimuhetaruccaniroytluaF.deriuqersa

Page 14

REPLACEMENT PARTS

Table 14-1: CRUVTM 2 through 16

Item Description Qty Part No.

1 1/4-20 X 1" lg phillips head bolt 4 700300-013 2 thermo cut-out 1 409560-001 3 heater terminal cover 1 *

4 tank cover 1 *

5 heater element 1 409600 * 6 probe assy with conduit and fitting 1 406050-100

7 probe assy gasket 1 30975 0-003

8 probe assy, CRUV 2-4 1 406270 8 probe assy, CRUV 6-34 1 406275 9 3/4" electric valve 24v 1 505400-001

10 tank weldment 1 * 11 1/4" solenoid valve 24v w/flying l eads 1 505084 12 3/4" ID hose 1 307 020-002 13 3/4" hose clamp 4 700560-075 14 1/4-20 nut assy CRUV/CRUV-DI 2-4 4 700650 14 1/4-20 nut assy CRUV/CRUV-DI 6-34 2 700650 15 cover to tank gasket 1 * 16 #8 external tooth washer pltd 2 700200-003 17 # 8-32 hex nut pltd 4 700200-002 18 #8-32 X1/2" phillips head screw 2 700170-007 19 1/4" l ock wa sher 4 700351-025 20 nylon probe housing, CRUV 1 308500

* Specify humidifier model and serial numbers when ordering replacement parts.

OM-779-5

Page 15

REPLACEMENT PARTS

Table 15-1: CRUVTM 21, 25, 30 and 34

Item Description Qty Part No.

1 1/4-20 X 1" lg phillips head bolt 4 700300-013 2 thermo cut-out 1 409560-001 3 heater terminal cover 1 * 4 tank cover 1 * 5 heater element, 2kW 120v * 409600 * 6 probe assy with con duit & fitting 1 406050-100 7 probe assy gasket 1 3097 50 -003 8 probe assy, CRUV 6-34 1 406275 9 3/4" electric valve 24v 1 505400-001

10 tank weldment 1 *

11 1/4" solenoid valve 24 v w/flying leads 1 505084

12 3/4" ID hose 1 307020-002

13 3/4" hose clamp 4 700560-075 14 1/4-20 nut assy CRUV/CRUV-DI 6-34 2 700650 15 cover to tank gasket 1 * 16 #8 external tooth washer pltd 2 700200-003 17 #8-32 hex nut pltd 4 700200-002 18 #8-32 X 1/2" phillips head screw 2 700170-007 19 1/4" l ock washer 4 7 00 35 1-02 5 20 nylng probe housing, C RUV 1 308500

OM-779-6

* Specify humidifier model and serial numbers when ordering replacement parts.

Page 16

REPLACEMENT PARTS

Table 16-1: CRUVTM-DI 2 through 16

metI noitpircseD ytQ .oNtraP

1tlobdaehspillihpgl"1X02-4/14310-003007 2tuo-tucomreht1100-065904 3revoclanimretretaeh1* 4yssataolf1013505 5rehsawkcol"4/14520-153007 6revocknat1* 7tnemeleretaeh**006904 8yssahctiwstaolf1 9teksagyssaeborp1400-057903

01tss303tpn81"4/1gnirlaes1563603 11yssaevlavllabtss"2/11300-000505

21tnemdlewknat1* 3161-4sledomllif140.,ecifiro1140-922061 41gnisuoheborpnolyn1005803 51esohDI"4/31200-020703 61pmalcesoh"4/34570-065007 714-2ID-VURC/VURCyssatun02-4/14056007 7161-6ID-VURC/VURCyssatun02-4/12056007 81teksagknatotrevoc1*

91dtlprehsawhtootlanretxe8#2300-002007 02dtlptunxeh23-8#6200-002007 12evlavllif,dlewepip1512061 22wercsdaehspillihp"2/1X23-8#2700-071007

ton(yssaevlavniardnosaes-fo-dne

)nwohs

1300-680505

* Specify humidifier model and serial numbers when ordering replacement parts.

OM-779-7

Page 17

REPLACEMENT PARTS

Table 17-1: CRUVTM-DI 21, 25, 30 and 34

metI noitpircseD ytQ .oNtraP

1tlobdaehspillihpgl"1X02-4/14310-003007

2tuo-tucomreht1100-065904

3revoclanimretretaeh1*

4yssataolf1013505

5rehsawkcol"4/11520-153007 6revocknat1* 7tnemeleretaeh**006904 8yssahctiwstaolf1 9teksagyssaeborp1400-057903

01tss303tpn81"4/1gnirlaes1563603 11yssaevlavllabtss"2/11300-000505

21tnemdlewknat1* 3143-12sledomllif250.,ecifiro1250-922061 41gnisuoheborpnolyn1005803 51esohdi"4/31200-020703 61pmalcesoh"4/34570-065007 7143-6ID-VURC/VURCyssatun02-4/12056007 81teksagknatotrevoc1* 91dtlprehsawhtootlanretxe8#2300-002007 02dtlptunxeh23-8#6200-002007 12evlavllif,dlewepip1512061 22wercsdaehspillihp"2/1X23-8#2700-071007

ton(yssaevlavniardnosaes-fo-dne

)nwohs

1300-680505

* Specify humidifier model and serial numbers when ordering replacement parts.

OM-779-8

Page 18

REPLACEMENT PARTS

Table 18-1: CRUVTM Control Cabinet with VAPOR-LOGIC

and SSR option

Item Description Qty Part No.

1 main board, VL3 1 408490-001 2 bl ock, din rail stop 5 408252-006 3 terminal, ground 1 408252-010

4 terminal 2 408252-001

5 transformer, 120/280/240/480* 1 408965-001 5 transformer, 600v* 1 408986

6 S SR , 480 VAC 50 amp 1 pole 2 408677-002 7 contactor, 60 amp* 1 407001-021 7 contactor, 32 amp* 1 408991

8 3 pol e 3Ø power block* 2 408300-002

8 2 pol e 1Ø power block* 2 408300-001

9 fan, 24 volt 1 408677-001

* Specify humidifier model and serial numbers when ordering.

Table 18-2: CRUVTM Control Cabinet with VAPOR-LOGIC

metI noitpircseD ytQ .oNtraP

1"51X"31,lenapbus1300-027561

2gnol"4/1-2,liarNID22200-567761

3"2/1-4,liarNID15400-567761 4*A23,rotcartnoc1020-100704 4*A06,rotcartnoc1120-100704

5*V006,remrofsnart1689804

5*802/084/042/021,remrofsnart1100-569804

6*rewopØ3elop31200-003804

6*rewopØ1elop21100-003804 7potsliarNID,kcolb4600-252804

8lanimret2100-252804

9dnuorg,lanimret1010-252804

014-PCAG8-607-L,guldnuorg1810-052904

11Fepyt"4/1-1X23-6#,wercs2200-001007

21Fepytspillihp83.X23-8#,wercs8100-07107

31Fepytspillihp57.X23-6#,wercs6100-001007 41"8/3X8#latem,ffodnats6295904 51dtlp23-6#xehtun6300-001007 61draobrossecorporcim1100-094804 71htootlanretxe23-8#,rehsawrats1300-002007 81eriwreppoc,lebal1050508 91dnuorgenihcam,lebal1010008

02lobmysdnuorg,lebal1018608

12gnihtraeevitcetorp,lebal1028608

* Specify humidifier model and serial numbers when ordering.

option

OM-1017C

cruvpnlasm-1

OM-1017B

Page 19

MAINTENANCE SERVICE RECORD

DATE INSPECTED PERSONNEL OBSERVATION ACTIONS PERFORMED

Page 20

TWO-YEAR LIMITED WARRANTY

DRI-STEEM Humidifier Company (“DRI-STEEM”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twenty-seven (27) months from the date DRI-STEEM ships such product, whichever date is the earlier.

If any DRI-STEEM product is found to be defective in material or workmanship during the applicable warranty period, DRI-STEEM’s entire liability, and the purchaser’s sole and exclusive remedy, shall be the repair or replacement of the defective product, or the refund of the purchase price, at DRI-STEEM’s election. DRISTEEM shall not be liable for any costs or expenses, whether direct or indirect, associated with the installation, removal or reinstallation of any defective product.

DRI-STEEM’s limited warranty shall not be effective or actionable unless there is compliance with all installation and operating instructions furnished by DRI-STEEM, or if the products have been modified or altered without the written consent of DRI-STEEM, or if such products have been subject to accident, misuse, mishandling, tampering, negligence or improper maintenance. Any warranty claim must be submitted to DRI-STEEM in writing within the stated warranty period.

DRI-STEEM’s limited warranty is made in lieu of, and DRI-STEEM disclaims all other warranties, whether express or implied, including but not limited to any IMPLIED WARRANTY OF MERCHANTABILITY, ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, any implied warranty arising out of a course of dealing or of performance, custom or usage of trade.

DRI-STEEM SHALL NOT, UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS, REVENUE OR BUSINESS) OR DAMAGE OR INJURY TO PERSONS OR PROPERTY IN ANY WAY RELATED TO THE MANUFACTURE OR THE USE OF ITS PRODUCTS. The exclusion applies regardless of whether such damages are sought based on breach of warranty, breach of contract, negligence, strict liability in tort, or any other legal theory, even if DRI-STEEM has notice of the possibility of such damages.

By purchasing DRI-STEEM’s products, the purchaser agrees to the terms and conditions of this limited warranty.

U.S. Headquarters:

14949 Technology Drive • Eden Prairie, MN 55344 Phone: (800)328-4447 • (952) 949-2415 • Fax: (952) 229-3200 E-Mail: sales@dristeem.com • Web: www.dristeem.com Europe Office: Bell Place, Bell Lane • Syresham, Brackley • NN13 5HP, U.K. Phone: +44 1280 850122 • Fax: +44 1280 850124 E-Mail: 106277.1443@compuserve.com

Continuous product improvement is a policy of DRI-STEEM Humidifier Company;

therefore, product features and specifications are subject to change without notice.

DRI-STEEM, CRU, RAPID-SORB and VAPOR-LOGIC3 are registered trademarks of the DRI-STEEM Humidifier Company.