JS Humidifiers HumEvap Service manual

HumEvap Mobile Humidifier
Operating, Installation and Instruction Manual
Version 1.71 February 2006
WARNING: This Humidifier must be installed, operated and maintained in
accordance with this manual. Failure to do so could result in contamination that
might cause Legionnaires’ disease, which can be fatal.
WARNING: Failure to maintain this humidifier as recommended in this manual
will invalidate warranty.
JS Humidifiers plc
Artex Avenue, Rustington, LITTLEHAMPTON,
West Sussex, BN16 3LN, UK
Tel: [phone]. Fax [phone]
email: sales@jshumidifiers
Humidity Group
of the HEVAC Association
INVESTORS IN PEOPLE
JS Humidifiers plc
www.jshumidifiers.com

HumEvap Mobile Humidifier
Introduction
Safety
ii
General Safety
Legionella Health & Safety
Correct Use
Water
Note
This manual contains all details necessary for the planning and installation of the JS
HumEvap Mobile Humidifier. In addition commissioning, operating and maintenance
details are included.
The manual is intended for use by engineers and properly trained technical
personnel. Maintenance, servicing or repair work must only be carried out by suitably
skilled and qualified personnel, the customer MUST be responsible for ensuring their
suitability.
No liability will attach to JS Humidifiers plc if any damage, injury or accident is
attributable to inattentive, inappropriate, negligent or incorrect installation and
operation of the machinery whether or not caused deliberately.
Always isolate all electrical and water supplies before commencing any maintenance.
Please contact JS Humidifiers plc if in any doubt.
Warning! This Humidifier must be installed, operated and maintained in
accordance with this manual. Failure to do so could result in contamination
that might cause Legionnaires’ disease, which can be fatal.
Your attention is drawn to the Health and Safety Executive's Approved Code of
Practice (ACoP) and their technical guidance on the prevention and control of
legionellosis in water systems. If inadequately maintained, water systems, of which
any humidifier is a part, can support the growth of micro-organisms including the
bacterium that causes Legionnaires' disease. JS Humidifiers plc has considered all
aspects of the design of their humidification systems to reduce as far as possible the
risk of Legionnaires' disease and other similar conditions but it is important that users
are also aware of their responsibilities under the ACoP in reducing the risk of
legionellosis.
To prevent the growth of legionella, users are required to:
Carry out a risk assessment of the water system by a competent
person, and implement a monitoring and control regime.
Avoid water temperatures that favour the growth of legionella
(20-45°C);
Avoid water stagnation;
Clean and disinfect the humidification system in accordance with the
ACoP and enclosed instructions;
NEVER leave your HumEvap Mobile out of operation containing water for more than
24hrs, as it could result in contamination that might cause Legionnaires’ disease,
which can be fatal. In the event that the humidifier is turned off for prolonged periods,
ensure that the water reservoir and pipe-work supplying the unit are drained, unless
they supply other systems which ensure a regular renewal of water in the system. If
the unit is found to have been out of operation for more than 24hrs containing water,
water stagnation and contamination may occur, and the system will require thorough
cleaning.
If you intend to shut the system down for any length of time please contact JS
Humidifiers plc for advice.
The JS HumEvap Mobile Humidifier is only intended for light industrial direct air
humidification and any other or further application is not considered use for the
intended purpose. The manufacturer cannot be made liable for any damage resulting
from incorrect use.
JS Humidifiers systems are designed to be used with mains or softened water. On no
account attempt to introduce any other fluid or chemical into the system without first
consulting JS Humidifiers.
Water supply installation must comply with local regulations.
The water supply to the JS HumEvap Mobile should be free of microbial
contamination and should run at less than 20 C within 2 minutes of turning on supply
The Customer MUST ensure that an appropriate overflow pipe is fitted to the Auto-Fill
unit.
Our policy is one of continuous research and development. We therefore reserve the
right to amend without notice the specifications given in this document.

Directives Applied
Standard(s) to which
Conformity is declared
Manufacturer's Name
And Address
Type of Equipment
Model Name(s) & Series
Year of Manufacture
Electromagnetic Compatibility Directive 89/336/EEC
Machinery Directive 98/37/EC Amending Directive 89/392/EEC
Low Voltage Directive 73/23/EEC
EN50081-1:1992, EN50082-1:1992
EN60204-1:1993, EN292 Parts 1 & 2:1991
EN349:1993
JS Humidifiers plc
Artex Avenue,
Rustington,
LITTLEHAMPTON, WEST SUSSEX, UK
BN16 3LN
Tel: [phone]
HumEvap Mobile Humidifier
HumEvap Mobile - Series 1.70
2006
We the undersigned, hereby declare that the equipment specified above
conforms to the above Directive(s) and Standard(s)
Signature:
Name: S.P.Verney
Position: Managing Director
HumEvap Mobile Humidifier
Introduction
Standards and Certificates
iii

HumEvap Mobile Humidifier
Introduction
Contents
Warning! This Humidifier must be installed, operated and maintained in
accordance with this manual. Failure to do so could result in
contamination that might cause Legionnaires’ disease, which can be
fatal.
Safety
Standards and Certificates
Contents
INTRODUCTION
Technical Specification
Two types of HumEvap Mobile Unit
Principle of Operation
Introduction
Principle of Operation
Rear View of Manually filled Unit
OPERATION
Operating Parameters
Start-Up and Operation
Operating Parameters
INSTALLATION
Manual Unit Positioning and Installation
Manual Unit Positioning
Installation of Manual Unit
Manual Unit Water Supply
Water Reservoir
Re-filling
Auto- fill Unit Installation and Water Supply
Auto - fill Unit Positioning
Isolation of Water Supply
Torbeck Float Valve Water Flow Restrictors
Fitting Flexible Filling Hose
Overflow Pipe
Auto - fill Unit Water Supply (cont)
Fitting self-cutting valve to existing copper pipework
Final checks
MAINTENANCE
Routine Maintenance
Water Supply
De-scaling of Rotating Evaporative Disk
Cleansing Water Reservoir
Maintenance Frequency
Use and Care
Maintenance Overview and Frequency
Regular Inspections
Non-use of Solvents or Scouring Materials
Replacement of Ionic Silver Stick
Troubleshooting and Spares
CONTENTS
(ii)
(iii)
(iv)
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11

Electrical Supply
Power Consumption
Evaporative Capacity / Day
Air Flow Rate Hi Speed
Lo Speed
Water Reservoir Capacity
Dimensions (mm) W x D x H
New Weight
Transport Package (mm)
W x D x H
Transit Weight
Run-dry protection
(Manual & Auto-fill Unit)
Water Connection
(Auto-fill Unit only)
Overflow
(Auto-fill Unit only)
Water Supply
Two Types of HumEvap
Mobile Units
230 Volt; 50 Hz; 13amp
53W
60 litres (at 21°C and 30% rH)
790m3per hour
490m3per hour
34 litres
625 x 316 x 720
18.6 kg
670 x 365 x 780
20.6 kg
Water level Float Switch
15mm (1/2”BSP) flexible filling hose with self-cutting valve connection.
21.5mm dia flexible / extendable pipe.
It is essential that clean water be supplied to the Unit to ensure
hygienic, trouble-free operation.
This water supply MUST be checked regularly to ensure there is no
microbiological build up within the building's water supply.
This is particularly significant if, for example, the Unit’s supply is at the
end of a dead leg where water might stand for some time or if the
water comes from a storage tank.
If you have any queries regarding water sampling and testing
please contact JS Humidifiers plc on 01903 850200.
The HumEvap Mobile Unit is available in two configurations:
1 - Manual filling of the Water Reservoir.
2- Auto-fill and Overflow arrangement fitted to the Water Reservoir.
This enables the humidifier to be connected directly to a water
supply and drain pipe for automatic performance.
HumEvap Mobile Humidifier
Introduction
Technical Specification
1

Introduction
Principle of Operation
The energy efficient HumEvap humidification system operates by the
principle of evaporation, where the energy required to evaporate
moisture is taken from the passing air flow. This in turn increases the
relative humidity of the air, while decreasing the dry bulb
temperature, producing an adiabatic cooling effect.
(See diagram below).
Mains or demineralised water in the Water Reservoir is used to
moisten the rotating evaporative pads.
Air, drawn from the room through the anti-bacterial filter, travels
through the wetted evaporative pads and absorbs water as it passes.
This humidified air is distributed into the room through the air outlet
grilles.
HumEvap Mobile Humidifier
Introduction
Principle of Operation
2
0102030
40 50 60
Relative Humidity ( %rH)
50 % 20 %
100 %
AIR OFF
CONDITION
AIR ON CONDITION Temp. (°C)
Anti-bacterial air filter
Water reservoir
Air outlet grilles
Humidity control
Rear view of
Manually filled Unit

Start-up and Operation
Operating Parameters
Fill Hatch
Humidity Control
Fan Speed
Power Indicator
Refill Indicator
(Manual Unit only)
The Humidity Control maintains the humidity level in the room at the
required level.
Use for filling water into the Water Reservoir.
Turn the Humidity Control to desired humidity level. When this
humidity is reached, the fan will turn OFF while the Evaporative
Rotating Disk continues to rotate.
When set to maximum the humidifier will run continuously. When set
to minimum the humidifier will switch OFF automatically.
Use to set Fan speed to Lo (small fan symbol) or Hi (large fan
symbol). To switch the humidifier OFF, turn to 0-position.
NB The Evaporative Rotating Disk will only stop turning when the
Humidity Control switch is turned OFF or the Water Reservoir is
empty i.e. below float switching level.
Humidifier is operating when Green light illuminates.This light will
only extinguish when the Humidity Control switch is turned below the
room humidity level.
The Red light illuminates when the water level in the Reservoir is low
i.e. below 20mm of water in the Reservoir.
At this level the humidifier will automatically switch OFF.
This light will only extinguish when the Water Reservoir is re-filled.
To refill, see the section “Manual Unit Water Supply”.
HumEvap Mobile Humidifier
Operation
Operating Parameters
3
Fill Hatch Humidity
Control
Fan Speed
Refill
Indicator
Power
Indicator
HumEvap Mobile Humidifier Control Panel
Warning! This Humidifier must be installed, operated and maintained in
accordance with this manual. Failure to do so could result in
contamination that might cause Legionnaires’ disease, which can be fatal.

Manual Unit Positioning
Installation of Manual Unit
Warning! This Humidifier must be installed, operated and
maintained in accordance with this manual. Failure to do so
could result in contamination that might cause Legionnaires’
disease, which can be fatal.
Position the HumEvap unit close to the electrical and water facilities
in such a way that air inlet and outlets are not blocked.
Do not position the unit directly on or against a wall.
Do not position the humidifier near sensitive furniture, paintings or
other objects, that might be damaged by excessive humidity.
If possible locate the unit in the middle of the room.
Keep out of reach of children!
Make sure humidifier is in a firm position and cannot fall over or be
pushed and damaged accidentally.
Mechanical Installation:
- Check Water Reservoir for any leaks or damage.
- Make sure evaporative Rotating Disk is in correct position.
- Check Evaporative Pads are properly fixed to the Rotating Disk.
Electrical Installation:
- Before using the unit extend the power cable and inspect for any
signs of damage.
- Check the plug and socket for any damage.
- Always use an earthed 230V, 50Hz 13 amp power socket.
- Make sure Fan Switch is in OFF (0-position).
- Make sure the power socket is in the OFF position.
- Plug the power cable of the humidifier into the power socket.
- Before filling ensure the unit is disconnected from the wall
socket.
- For additional safety the installation of a high sensitivity circuit
breaker (RCD) rated at 30mA is recommended.
Running the Unit:
- To check the unit’s operation turn the Fan Switch to either Lo or Hi
speed and increase the Humidity Control until the it runs.
Cool air should discharge from the Supply Grilles.
Please Note: Unit will not run if there is insufficient water in the
Water Reservoir.
HumEvap Mobile Humidifier
Installation
Manual Unit Positioning and Installation
4

HumEvap Mobile Humidifier
Installation
Manual Unit Water Supply
5
Open the Fill Hatch located on the control panel of the Unit and
carefully fill with mains or demineralised water.
Do not overfill the tank: Make sure that water level does not exceed
the MAX mark on the Water Reservoir.
The water level indicator lamp (Red light) will automatically indicate a
low water level in the Water Reservoir.
(see “Operating Parameters”).
If Red light shows, switch OFF the humidifier by turning the Fan
Switch to 0-Position.
Open the Fill Hatch of the Unit and refill with fresh or demineralised
water.
To run the Unit, turn the Fan Switch to either Lo or Hi fan speed
and increase the Humidity Control.
Make sure the water does not contact the controls on the
control panel of the humidifier.
Wipe water off with a dry cloth before starting the humidifier.
Water Reservoir
Re - filling
Fill Hatch

6
HumEvap Mobile Humidifier
Installation
Auto - fill Unit Installation and Water Supply
Mobile Unit showing Torbeck Flexible Filling
Hose connection, Overflow and Ionic Stick
fitted to the Water Reservoir
Overflow pipe
Ionic stick
Torbeck Flexible Filling Hose
Auto-fill Unit Positioning
Isolation of Water Supply
Torbeck Float Valve Water
Flow Pressure Restrictors
Position the Unit within one meter of the electrical, water and drain
pipe facilities.
Follow the advice stated above for the Manual unit plus the following:
Ensure that the water supply is turned OFF.
Two flow restrictors (high pressure HP and low pressure LP) are
supplied with the Torbeck valve to match the pressure of the water
supply.The L.P. restrictor is fitted as standard.
For a tank fed supply:
Less than 7.5m (24ft) head of water; no restrictor fitted.
Between 7.5m (24ft) and 37m (120ft); fit L.P. restrictor.
Over 37m (120ft); fit H.P. restrictor.
For a pressured (non-tank) water supply:
Less than 4.0 bar (60psi); fit L.P. restrictor.
Over 4.0 bar (60psi) fit H.P. restrictor.
To change the restrictor, remove the Torbeck float valve from its
elbow and replace the L.P. with the H.P. If tank fed, with tank less
than 7.5m head of water, remove the L.P. restrictor and have none.
It is essential the overflow pipe can cope with the flow of water
from the Torbeck valve when it is fully open.
1Fit the flexibel filling hose and rubber seal onto the 1/2” BSP inlet
of the Torbeck float valve tank connector fitted to the Water
Reservoir.
2Screw the other end of this filling hose, and it’s rubber seal, to the
outlet of the Self-cutting valve
Ensure the Overflow pipe is within one meter of a drain pipe.
If not possible, the Overflow pipe is extendable to approx 2metres.
1 One end fits over the short pipe projecting from the connector on
the Water Reservoir. This is secured with a Jubilee clip.
2 The other end is a push fit into a rubber bung fitted into the branch
port of the drain tee (not supplied with the Unit).
Fitting Torbeck Flexible
Filling Hose and rubber seal
washer
Overflow Pipe
The Customer MUST Ensure that an appropriate
overflow pipe is fitted to the Auto-Fill unit.

Fitting Self- cutting Valve to
Existing Copper Pipework
Final Checks
The self-cutting valve is suitable for 15mm copper tube and should be fitted
as follows:
1 To position valve outlet in the direction required:
a) screw chrome locknut hand-tight against shoulder of valve.
b) screw valve into saddle until locknut contacts saddle.
c) decide which way valve is to be fitted to pipe for positioning of valve outlet
Note: after water connection is made valve can be unscrewed to a maximum
of half a turn for final positioning (see instruction 7 below).
2remove saddle from backplate.
3 screw back plate to wall. use packing piece if necessary to ensure pipe sits
in grove in backplate.
NB: The back plate must be firmly fixed to the wall to avoid distortion of the
copper pipe and possible leakage when screwing valve into saddle.
4Remove valve from saddle complete with cutter and seal.
5 Ensure the rubber seal is correctly located within the body of the saddle,
then screw saddle to backplate.
6 screw valve into saddle by hand until locknut contacts saddle. Water
connection is then made.
NB: Do not attempt to overtighten valve; screwing valve in until locknut
contacts is quite sufficient.
7 For final positioning of valve, unscrew valve no further than 1/2 turn.
Tighten locknut against saddle a maximum of hand-tight plus 1/4 of a turn.
8 Fit Torbeck flexibel filling hose and rubber seal washer to the Valve outlet.
Do not turn on the water until the rest of the Installation procedure is
complete.
Turn the self-cutting tap handle anti-clockwise, to allow the water to flow.
Turn ON the electricity supply.
Finally, make sure that all of the connections are firm, and turn on the mains
water.
Check for any signs of water leaks.
Turn ON the Humidifier to check it’s performance.
7
HumEvap Mobile Humidifier
Installation
Auto-fill Unit Water Supply (cont)
Rubber seal
Tube cutter
and seal
Chrome
locknut
Flow control
On/Off tap
Valve outlet
Saddle
Existing 15mm
supply
Backplate

8
Water Supply
De-scaling the Rotating
Evaporative Disk
Cleaning the Small
Gear Wheel
Cleansing Water Reservoir
Non- use of Solvents or
Scouring Materials
Warning! This Humidifier must be installed, operated and
maintained in accordance with this manual. Failure to do so
could result in contamination that might cause Legionnaires’
disease, which can be fatal.
It is essential that clean water is supplied to the Unit to ensure
hygienic, trouble-free operation.
The water supply to the humidifier MUST be checked regularly to
ensure there is no microbiological build up within the building's water
supply. For example this might be caused by external factors such a
high environmental temperature or the quality of mains water supply.
This is particularly significant if, for example, the humidifier water
supply is at the end of a dead leg where water might stand for some
time or if the water comes from a storage tank.
If you have any queries regarding water sampling and testing
please contact JS Humidifiers plc on 01903 850200.
Remove the Evaporative Disk from the humidifier housing.
Clean off any dirt or debris that may have built up; use a de-scaling
agent for cleaning.
Thoroughly flush with fresh water afterwards to ensure the disk is
clean and free of de-scaling agent and refit the disk.
Remove the Evaporative Disk from the humidifier housing.
Locate the small gear wheel and gently brush off off any dirt or
debris that may have built up; Remove and use a de-scaling agent
for cleaning if necessary.
To clean and refresh the system, drain the water reservoir fully. Refill
completely with water (approx. 34 litres) and place Disifin disinfection
tablet into the water.
Allow tablets to dissolve in the water reservoir, then run the unit.
There is no need to flush the unit, as Disifin is 100% biodegradable.
Always wash hands after handling.
Do not use solvents or other aggressive liquids for cleaning.
Do not use scouring materials (wire brush or scouring cloth etc) for
cleaning; they leave scratches that encourage the growth of micro-
organisms and bacteria.
WARNING: Failure to maintain this humidifier as recommended in this
manual may invalidate warranty.
HumEvap Mobile Humidifier
Maintenance
Routine Maintenance

HumEvap Mobile Humidifier
Maintenance
Maintenance Frequency
9
Use and Care
Maintenance Overview and
Frequency
Daily Inspections
Weekly Inspections
Monthly Inspections
Quarterly Inspections
Frequent cleaning is necessary to maximise and extend the life of
the Humidifier.
To refesh the system, every month, place 1 small Disiifin tablet into
the water tank and allow to dissolve.
Disifin tablets are available from JS Humidifiers on 01903 850200.
Always disconnect the unit from the power socket before cleaning
and maintenance.
Regular inspections MUST be carried out by the user to ensure the
unit is operating correctly.
The following represent an inspection regime that may be adopted or
adapted according to the individual circumstances.
1. Visually check system for leaks
2. Visually check water level.
3. Check the Evaporative Disk is rotating, the fan runs
when the Green light is illuminated in conjunction with the
Humidity Control.
1. As for daily inspections, plus:
2. Check operation of the Water Reservoir low level float
switch.
3. Check cleanliness of air filter
1. As for weekly inspections, plus:
2. To ensure that the system is microbiologically clean, water
samples may want to be taken.
3. Remove the Rotating Evaporative Disk and de-scale.
4. Drain the humidifier Water Reservoir and visually check for
signs of microbial presence, such as a gel-like biofilm (which
might be flaky when dry).
5. Clean the Water Reservoir if necessary.
6. Check cleanliness of air filter
7. Place Disifin purification tablet into the water reservoir, and
allow to dissolve. Run the unit.
To order Disifin Tablets, call JS Spares on 01903 850200
1. As for monthly inspections, plus:
2. A water sample must be tested for the presence of
legionella.
3. Replace Ionic Stick
4. Replace air filter if necessar
If you have any questions regarding water sampling and testing
please contact JS Humidifiers plc on 01903 850200.

Replacing the Ionic Stick The HumEvap unit is supplied with
an Ionic Silver Stick to reduce
bacterial contamination of the water.
This Stick requires replacing every
three months to ensure proper
bacterial control.
The Ionic Stick is located on the back
edge of the water reservoir as
shown.
To replace the Stick, remove the
screw from the back of the Ionic Stick
Support Bracket as shown in the
picture.
Pull the Ionic Stick out of the bracket
and replace it with a new one.
Refit as shown.
10
HumEvap Mobile Humidifier
Maintenance
Replacement of Ionic Silver Stick

Stale smelling unit
Neither Green or Red light
illuminated or Fan running
Power ON, Humidity Control set
above Room level,but no Green
or Red light illuminated
Green light is illuminated,
Evaporative Disk rotating but Fan
not running
Red light is illuminated
Green light is illuminated,
Fan speed selected, Humidity
Control set above Room level but
there is no humidification effect
When operating, the humidifier
emits a rumbling sound.
Water in tank has become
stagnant
Unit is switched OFF at its
external power source.
Humidity Control set below
room humidity level.
Faulty Float Switch
Fan Control Switch is OFF
Fan Motor defective
Water level in the Reservoir is
too low
No water supply (Auto-fill Unit):
blockage or turned OFF.
Air Filter blocked
Evaporative Disk Motor
defective
The Evaporative Rotating Disk
is mounted incorrectly.
HumEvap Mobile Humidifier
Maintenance
Troubleshooting & Spares
11
Flush tank and place a Disifin
tablet into the tank and allow
to dissolve.
Check and switch ON
Raise Humidity Control level if
necessary.
Check Float Switch and
replace if necessary
Turn Fan switch to Hi or Lo
speed.
Contact JS Humidifiers plc for
more information.
Check water level
Check water supply for
blockage and turn ON.
Replace Air Filter
Contact JS Humidifiers plc for
more information.
Mount Evaporative Rotating
Disk correctly.
Malfunction Cause Remedy
Name of Spare Part Ref.
Air Filter HUM 1063
Evaporative Pads (Set) HUM 358
Disifin disinfection tablets (25 box) DISIFIN
Ionic Silver Stick ACOS 7018
Recommended Spares

HumEvap Mobile Humidifier
Installation & Instruction Manual (Version 1.71)
© JS Humidifiers plc March 2006 MWR
All rights reserved. No parts of this publication may be reproduced without
the express consent of the publishers.