Pure Water Mega-25 User manual

Mega-25™
Operator’s
Manual
Pure Water Brand
4511 NW 42nd
Lincoln, NE 68524
Phone: [phone] • Fax: [phone]

Table of Contents
Important Safety Information ...........................................................3
Introduction.......................................................................................4
Record Important Information...........................................................4
Included With Your Distiller...............................................................4
Optional Accessories ........................................................................5
How Your Distiller Works ..................................................................6
Preparing for Installation ..................................................................7
Installation ........................................................................................8
Connecting the Incoming Water Line ..........................................8
Connecting the Boiling Tank Drain Line & Overfl ow Line ..........10
Connect the Distilled Water Line and Faucet ............................ 11
Start-Up ..........................................................................................12
Sterilizing ..................................................................................12
Post Filter Installation ................................................................12
Maintenance and Cleaning.............................................................14
Overall Maintenance Requirements..........................................14
Cleaning the Boiling Tank .........................................................15
Changing the Post Filter ...........................................................16
Troubleshooting ..............................................................................18
Electrical Schematic .......................................................................21
Exploded View ................................................................................22
Parts List ........................................................................................23
page 2 Mega 25 Owners Manual

Mega 25 Owners Manual page 3
Important Safety Information
• If you are not sure that your electrical outlet is properly grounded or that the circuit
protection is correct, have it checked by a qualifi ed electrician.
• Operate indoors only.
• The area MUST be well ventilated.
• WARNING: Disconnect the distiller from the power supply before assembling, ad-
justing or servicing the distiller.
• NEVER immerse the distiller in water or any other liquid.
• NEVER operate the distiller with a damaged cord or allow the cord to become ex-
posed to hot surfaces.
• DO NOT use an extension cord or adapters.
• DO NOT let children play with the distiller.
• DO NOT touch the top of the distiller when it is operating because it becomes very
hot.
• Exercise care when removing the boiling tank lid and never remove it when the dis-
tiller is operating.
• The installation and use of this product must comply with all applicable state and lo-
cal laws and regulations.
• IMPORTANT: This distiller is designed to be used only with Pure Water accessories
and replacement components.
• This distiller is equipped with fused pump circuitry. In the event of pump failure, check
the pump fuse located on the panel under the switches. Replace only with a 1 amp
Slo-Blo fuse. Never use any fuse larger than specifi ed.
• NEVER have the unit in the Auto Drain mode if an auto drain connection is absent.
• The physiological effects of the operation of this distiller, benefi cial or otherwise have
not been investigated by U.L.
• Operating Pressure 30-100 PSI
• Mega 25 produces 12 gallons per day (0.5 gallons per hour) under normal operating
conditions

Introduction
Congratulations on purchasing the fi nest water distillation system on the mar-
ket. With proper care and attention, the Mega 25 will give you many years of top
performance and high-quality drinking water. Please read this manual thoroughly
before installing and operating your Mega 25.
Record Important Information
The model and serial number are found on the back panel. You should record the
serial number below for future references.
Date of Purchase:
Model:
Serial Number:
Purchased from:
Included With Your Distiller
In addition to your Mega 25 distiller, your box will contain the following:
• Incoming Water Hook-up Kit. Includes:
Saddle tapping valve
3/8”T x 1/4”T speedfi t elbow
15 feet of 1/4” food-grade tubing
• Drain Water Hook-up Kit. Includes:
Hose clamp
1/2”T x 1/2”STEM speedfi t elbow
12 feet of 1/2” fl exible tubing
12 feet of 1/2” high-temperature tubing
• Distilled Water Hook-up Kit. Includes:
Post fi lter
3/8”T x 3/8”STEM speedfi t elbow
Filter bracket
25 feet of 3/8” food-grade tubing
6” faucet kit
3/8”T x 1/4”F speedfi t connector
• Owners Manual and Warranty Card
• Storage Tank Faucet
• Manual Drain Kit
• Power Cord
Pure Water Mega 25
page 4 Mega 25 Owners Manual
bracket 3/8” tubing
faucet
kit
post filter
elbow
connector
elbow
hose
clamp
1/2” hi-temp
tubing
1/2” plastic
tubing
1/4” tubing
saddle tapping
valve elbow
Power Cord
Manual Drain
Kit
Distilled
Drain
Plug

Mega 25 Owners Manual page 5
Optional Accessories
The following are optional accessories or maintenance items for the Mega-25.
They may be purchased from your Dealer or Distributor, or directly from Pure
Water.
•Auxiliary hook-up kit for running distilled water to your refrigerator or ice-
maker. Stock #19009.
•Pressure tank hook-up kit to protect the pump when using with multiple
dispensers. 19009B.
•Lumen™ cleaner and descaler for cleaning the boiling tank. Stock #6603.
•Stainless steel polish. Stock #6606.
•Post-fi lter replacement cartridge. Stock #32513.
•Extended-reach faucet for your sink (an option from the standard 6” fau-
cet). Stock #95301K.
• Use a Pre-Filter (Stock #19051) if you plan to draw water directly from the
distilled water tank through the Distilled Water Drain.

How Your Distiller Works
The Mega 25 is designed to produce approximately one gallon of high-quality,
pure distilled water every two hours, or up to twelve gallons in a 24-hour period.
The Mega 25 is a fully automatic unit. The water level in the boiling tank and stor-
age tank are controlled by individual fl oats and a set of microswitches.
The boiling tank operates on a modifi ed batch approach. Feedwater is automati-
cally added until a high level is reached and this triggers the heating element and
fan to operate. This begins the distillation cycle.
As the unit distills, the water level in the boiling tank falls. When the water level
gets close to the heating element, the low-level microswitch is triggered, causing
feedwater to be added until the high level is reached. If, for some reason, no wa-
ter enters the boiling tank when needed, the fan and heating element will remain
off until the condition is corrected.
Once the storage tank is full of distilled water, the unit will automatically shut
down and the contents of the boiling tank are drained by the automatic drain
valve, thereby fl ushing out most of the contaminants from the boiling tank. If a
drain is not available for automatic draining, the unit can be set to drain manually.
The Mega 25 will begin
distilling again once
the water level in the
storage tank drops to
approximately 3/4 full.
It continues to operate
until the storage tank is
full again.
The built-in demand
pump allows distilled
water to be delivered
to a faucet, chilled/hot
water dispenser, refrig-
erator, icemaker or other
locations as desired.
page 6 Mega 25 Owners Manual
Safety Feature
An overfl ow sensor
is installed in the drip
tray of your distiller in
the unlikely event that
a leak or an overfl ow
situation occurs in
your distiller. Your unit
will automatically shut
down when the switch
senses a certain level
of water in the drip
tray.
Special Feature
An Hour Meter is
installed on your Mega
25. This will allow you
to track the operation
and assist with sched-
uling maintenance.

Mega 25 Owners Manual page 7
Note: The use of
softened water is
recommended to
minimize scale
build-up in the
automatic drain valve.
Preparing For Installation
Before proceeding with the installation, you must determine the mode of opera-
tion (Auto Drain or Manual Drain). Pure Water recommends that your Mega 25
be operated with the Auto Drain, but we recognize that all locations may not have
an adequate drain available.
Auto Drain Mode: This allows the boiling tank of the distiller to drain auto-
matically when the storage tank is full or when there is a power interruption.
The Mega 25 needs to be installed in a location with an appropriate drain
and drain connections, as explained in the Connecting the Boiling Tank
Drain Line section on page 10 of this manual.
Manual Drain Mode: This allows the boiling tank to be drained manually.
This is ideal for locations that do not have an appropriate drain or connec-
tion. The Drain Valve will not allow the unit to drain the boiling tank auto-
matically. See Manual Drain Kit.
Other things to consider when installing your Mega 25:
• Select an area that will allow the distiller to remain level. Improper leveling
could affect the production rate.
• The distiller must be located in close proximity to a water supply, fl oor or
other drain and appropriate electrical supply source. The distiller should
also be located in a well ventilated room.
• Electrical requirements: Isolated 115 VAC, 20 amp circuit (220 VAC, 10
amp). Check the electrical rating on the label on the rear of the distiller.
• When connecting the tubing into the quick-connect fi ttings, it is critical the
tubing be inserted fully! The tubing should insert into the fi tting 1/2” to
3/4”. Failure to do so could cause water damage. We recommend that
prior to inserting the tubing, you mark the tubing 1/2” from the end being
inserted into the fi tting, then pull back on the tubing to verify it is attached
securely. This should ensure the tubing is properly and fully installed.
Also, make sure the tubing is cut squarely and is free of rough edges.

page 8 Mega 25 Owners Manual
Caution: The Mega
25 is heavy. Please
use caution during
installation.
Caution: Never use
the hot water line for
your incoming water.
Note: The use of
softened water is
recommended to
minimize scale
build-up in the
boiling tank.
Installation
CAUTION: The Mega 25 weighs approximately 75 lbs. Follow these instruc-
tions to prevent injury.
1. Open the carton from the bottom by cutting along the dotted line with a utility
knife.
2. Carefully slide the carton up so the distiller is in the upright position when the
carton is removed.
3. Remove and identify all parts kits as listed on page 4.
Connecting the Incoming Water Line
Notes and Cautions:
CAUTION: DO NOT use a hot water line for your supply line.
CAUTION: DO NOT turn the saddle tapping valve handle before or
during installation. Be sure the piercing lance does not protrude be-
yond the rubber gasket. Failure to do this may result in damage to the
piercing needle.
Note: The use of softened water for the raw water supply is recommended
to minimize scale build-up in the boiling tank and automatic drain valve.
Note: The Mega 25 comes standard with a saddle tapping valve. In some
areas a saddle tapping valve may not be permitted. In such instances, con-
tact your authorized Pure Water Distributor for other water line connection
options.
To hook-up the Incoming Water Line:
1. Locate the parts kit bag identifi ed “Raw Water
Hook-Up Kit”.
2. Turn the household water supply OFF.
3a. For installation on copper pipes:
a. Assemble the saddle tapping valve on
the cold water pipe so the outlet is in a
convenient direction. See fi gure 1.
b. Tighten the screws evenly. The brackets
should be parallel. Tighten fi rmly, but do
not overtighten.
c. Connect the 1/4” plastic tubing to the saddle tapping valve.

Mega 25 Owners Manual page 9
Caution: Never use
the hot water line for
your incoming water.
d. Coil a minimum of 8 feet of tubing behind the distiller to allow it to be moved
away from the wall for cleaning or service.
e. Cut the required length of tubing to run from the saddle tapping valve to the
distiller.
f. Install the speedfi t elbow onto the fi tting marked “Raw Water In”. Pull to test.
g. Connect the other end of the 1/4” plastic tubing to the elbow. Pull to test.
h. Turn the saddle tapping valve handle clockwise until you feel it is fi rmly seated.
Note: You have now pierced the water supply line and the valve is closed.
i. Turn the handle counterclockwise to open the valve. Turn on the household
water supply and check the connections for leaks. Tighten where required.
3b. For installation on brass, steel, or PVC pipes:
Note: Make sure the water supply is turned off and drain the line. Make sure your
are using the COLD water line.
a. Drill a 3/16” hole in the pipe. Use a hand drill to avoid shock hazard.
b. Turn the saddle tapping valve handle to expose the lance beyond the rubber
gasket no more than 3/16”.
c. Assemble and place the body of the valve over the hole so the lance fi ts into
the hole. Make sure the outlet is in a convenient direction. See fi gure 1.
d. Tighten the screws evenly. The brackets should be parallel. Tighten fi rmly, but
do not overtighten.
e. Turn the saddle tapping valve handle clockwise to close the valve.
f. Connect the 1/4” plastic tubing to the saddle tapping valve.
g. Coil a minimum of 8 feet of tubing behind the distiller to allow it to be moved
away from the wall for cleaning or service.
h. Cut the required length of tubing to run from the saddle tapping valve to the
distiller.
i Install the speedfi t elbow onto the fi tting marked “Raw Water In”. Pull to test.
j. Connect the other end of the 1/4” plastic tubing to the elbow. Pull to test.
k. Turn the handle counterclockwise to open the valve. Turn on the household
water supply and check the connections for leaks. Tighten where required.

page 10 Mega 25 Owners Manual
Caution: Always
allow an air gap
between the drain
line and the waste
water drain.
Connecting the Boiling Tank Drain Line & Overfl ow Drain Line
Notes and Cautions:
CAUTION: The boiling tank drain line delivers water in excess of 160° F to drain
when actuated. Caution should be used when running this line to ensure safe
placement of the tubing. The end of the tube should be secured to prevent move-
ment during the draining cycle. If young children might be around the system, it is
desirable to run the drain line through a large diameter piece of CPVC tubing which
serves as a shield/insulator.
Note: Do not connect the drain line direct-
ly to a waste water drain, sewer or trap.
Always allow an air gap between the drain
line and the waste water to conform with
local codes, and to prevent the possibility
of waste water being forced back into the
distiller. See figure 2.
Note: If you are draining into plastic pipe,
it must be rated CPVC at a minimum to handle the temperatures of boiling water.
PVC is unacceptable.
Note: This unit, under normal operating settings, should be self draining. It is rec-
ommended that the distiller be installed with a proper drain. The location of the boil-
ing tank drain outlet on the rear of the machine MUST be higher than the house-
hold drain. Failure to install the distiller properly could result in the unit draining hot
water onto the floor. If your installation plans do not call for installing with a drain,
you can manually close the drain by using the Manual Drain Kit. Pure Water cannot
be responsible for any damage resulting from improper installation.
To hook-up the Boiling Tank Drain Water Line & Overfl ow Drain Line:
1. Locate the parts kit bag identifi ed “Drain Water Line Hookup Kit”.
2. Insert one end of the 1/2” high-temperature tubing into the 1/2” x 1/2” speedfi t elbow.
Press in fi rmly. Pull to test.
3. Insert the elbow into the red fi tting on the back of the Mega 25 marked “Boiling Tank
Drain”. Press in fi rmly. Pull to test.
4. Slide the 5/8” hose clamp onto the end of the clear, fl exible 3/8” tubing. Install the tub-
ing onto the elbow marked “ Overfl ow Drain” on the lower rear of the unit. Tighten the
hose clamp securely with a screwdriver.
5. Run the overfl ow drain line to the same location as the boiling tank drain line. Secure
together if desired.
6. To hook up unit as manual drain operation, See Manual Drain Kit.

Mega 25 Owners Manual page 11
Caution: Never use
copper tubing to run
your distilled water
line. It can leech into
the distilled water.
Figure 3
Faucet
Escutcheon plate
Black rubber washer
Counter Top
Black rubber washer
Locking bracket
Tightening nut
3/8” QF x 1/4” UNS-24
Connecting the Distilled Water Line and Faucet
Notes and Cautions:
Note: Always use food-grade tubing (as included with the kit) for plumbing
distilled water. NEVER use copper, as it can leech into the distilled water.
To hook-up the Distilled Water Line:
1. Locate the parts kit bag identifi ed “Distilled Water Line Kit”.
2. Insert the elbow into the blue fi tting on the back of the unit marked “Distilled Water
Out”. Press in fi rmly. Pull to test.
Note: If you purchased a pressure tank for your Mega 25, please take note of instal-
lation instructions included with our Pressure Tank Kit now. If no pressure tank will be
used, please proceed.
To hook-up the Faucet:
1. Locate the faucet included in the Distilled Water Line Hook-Up Kit.
2. Wrap the stem of the faucet with Tefl on Tape and install the faucet at the desired
point of dispensing as shown in fi gure 3. Note: The channel washer and stem nut
should be tightened fully and be fl ush to the bottom of the sink top to hold the faucet
in place.
3. Install the 3/8” speedfi t connector onto the bottom of the threaded stem of the faucet.
4. Determine the correct length of 3/8” tubing needed to connect the outlet of the Dis-
tiller to the faucet. Cut and route the tubing to desired locations. We recommend
that you secure the 3/8” waterline to the fl oor joists or other structure of the house to
prevent the tubing from moving during water dispensing.
Note: Leave enough extra tubing to install the
fi lter and to move the unit for cleaning.
5. Insert one end of the routed 3/8” tubing into the
speedfi t connector on the bottom of the faucet
and the other end into the elbow labeled “Dis-
tilled Water Out” on the back of the distiller.
Press in fi rmly. Pull to test.

Caution: Do not in-
stall carbon filter until
solution is completely
drained.
page 12 Mega 25 Owners Manual
Figure 4
Start-Up
Notes and Cautions:
CAUTION: Do not, under any circumstances, cut or remove the round grounding
prong from the electrical plug.
Note: Open the boiling tank lid and remove the wire tie restraining the float. This
is used to prevent damage during shipment.
Note: This system must be fully grounded at all times. The electrical receptacle
you use must be a fully grounded, single phase, AC 115-120 volt, 20 amp minimum
circuit. If a two-pronged wall receptacle is encountered, it is the personal respon-
sibility and obligation of the customer to contact a qualified electrician and have it
replaced with a properly grounded three-pronged wall receptacle or have a ground-
ing adaptor properly grounded. If an extension cord must be used, it should be a
3-wire, 20-amp minimum cord.
First-Time Start-Up, Rinsing, Sterilizing, and Filter Installation
Tools/Items Needed: 5 gallons of Distilled water at room temperature
Liquid chlorine bleach
Phillips screwdriver
Utility knife
Adjustable wrench
We recommend that you sterilize your Mega 25 before putting it into use in order to elimi-
nate any microorganisms that may have collected in the storage tank.
To sterilize your Mega 25:
1. Lift the access panel from the top of the unit. See fi gure 4.
2. Remove the top right vented panel by removing the three screws with a phillips
screwdriver. See fi gure 4.
3. Remove the storage tank lid and set aside.
4. Pour in 2 1/2 gallons of Distilled water from the 5 gal-
lon bottle into the storage tank.
5. Add 1 teaspoon of liquid bleach to the storage tank
and mix well.
Caution: Do not add more than 1 teaspoon of
liquid bleach into the storage tank.
Usage of safety glasses and rubber gloves is strong-
ly recommended.
6. Replace storage tank lid and vented cover.

Mega 25 Owners Manual page 13
7. Plug power cord into the machine and plug the dis-
tiller into the power supply.
8. Turn the main power switch ON.
9. Open the faucet for 15 to 20 seconds ensuring there
is a steady stream of water, then close the faucet.
Caution: Do not consume this solution.
10. Check water line for leaks. Tighten where required.
Caution: If a leak is present, the pump may start automatically.
11. Allow the solution to remain in the system for 10-15 minutes.
12. Open the faucet and pump the remaining water from the storage tank. When the
pump shuts off, press the “PUMP OVERRIDE” switch until no water is present. See
fi gure 4a. Close the faucet.
13. Turn the function switch to DISTILL and the fan switch to STERILIZE. The fan will
shut off. See fi gure 4a.
14. Allow to steam sterilize for 45 minutes to 1 hour.
Caution: For proper sterilization, unit must run for at least 45 minutes, but lon-
ger than 1 hour may harm the distiller.
15. Switch the main power to OFF. Unplug the distiller from the power supply.
16. Remove the top, right vented panel and the storage tank lid.
17. Pour the remaining 2 1/2 gallons of distilled water into the storage tank.
18. Replace the storage tank lid and vented panel.
19. Install the carbon fi lter.
a. At a location close to the Mega 25, install the post fi lter bracket using the tape
installed on the bracket, or use a nail or a screw to affi x to a wall.
b. Place the post fi lter into the bracket and ensure it is secure.
c. From the existing, distilled water line, cut the desired length of tubing to run from
the back of the machine to the fi lter. Insert the tubing from the back of the ma-
chine to the inlet on the post fi lter. Insert the tubing from the faucet to the outlet
of the post fi lter. Press in fi rmly. Pull to test.
20. Plug the unit into the power source and turn the main power switch ON.
21. Open faucet and pump out water from the storage tank until the pump shuts off. DO
NOT CONSUME THIS SOLUTION.
22. Turn the fan switch to DISTILL. See fi gure 4a.
Figure 4a

page 14 Mega 25 Owners Manual
23. Allow distiller to operate and fi ll up the storage tank. Distiller will shut off automati-
cally. This will take approximately 60 hours.
24. Open the faucet and allow to run for 3 to 4 minutes to fl ush out the system. DO NOT
CONSUME. Close the faucet. The pump should shut off and the machine will start-
up.
NOTE: If pump does not shut off, you may have a leak in your water line.
25. You now have approximately 20 gallons of water in the storage tank for consumption.
Maintenance and Cleaning
If operated in the recommended automatic drain mode, the Pure Water Mega 25
is designed for low maintenance performance. The Mega 25 has a built-in drain
valve that fl ushes the contaminants and residue out of the boiling tank after each
full tank of distilled water is produced. This minimizes the build-up of scale in the
boiling tank.
Overall Maintenance Requirements
The following guide should be used for the maintenance of your distiller. The
timing will vary according to your local water conditions. It is your responsibility to
maintain your equipment. Without proper maintenance, your distiller may not pro-
duce optimum results. The following times may be far too long for your particular
area, so keep track of the average time and adjust the schedule below:
Every month* : Clean the boiling tank (see below).
* More frequent if water is hard
Every 3 months:a) Change the post fi lter (see page 16).
b) Clean the exterior. Use Stainless Steel Polish &
Cleaner (stock #6606). It is available from your Dealer or
Distributor or from Pure Water.
Every 6 months:a) Sterilize (see page 12).

Cleaning the Boiling Tank
Notes and Cautions:
Caution: Under no circumstances should the cleaning solution be heated and
run through a distillation cycle.
Note: If operating in the manual drain mode, you will need to drain the boiling
tank once per week.
Note: Failure to clean the interior can result in:
a) Scale build-up causing premature heating element or drain valve failure.
b) Reduced purity of the distilled water due to the possibilities of splash over of
contaminants from the boiling tank.
To clean the boiling tank:
1. Open the auxiliary faucet at the sink and remove enough water to restart the unit.
This will be evident because the fan will turn on.
2. Open the top cover and move the function switch to “Clean”. The fan will stop.
3. Carefully feel the boiling tank lid and check the temperature. If it is hot, wait at least
30 minutes for the unit to cool.
4. After the unit is cool, remove the boiling tank lid.
5. Add Lumen™ by following the directions on the package.
6. Add additional water using a jar or pitcher until the water level inside the boiling tank
is above the scale line. Caution: Do not overfill.
7. Let the solution stand overnight.
8. After the scale has softened, turn the main power switch OFF. This will allow the
boiling tank to drain. Once the boiling tank has drained, turn the main power switch
ON and allow the boiling tank to refi ll. Turn the power OFF again, repeat this step
several times to fl ush the boiling tank of cleaning solution and scale.
Note: If using the Manual Drain Kit, ensure that the manual drain valve is in the “open”
position.
9. Return the function switch to “Distill”. The unit is now ready for normal operation.
Note: If cleaning the unit without the automatic drain connections, ensure that you have a
3-gallon container or other method of catching the drain water.
Mega 25 Owners Manual page 15

page 16 Mega 25 Owners Manual
Figure 5
Changing the Post Filter
1. Turn the main power switch to “Off” and open
the auxiliary faucet at the sink to bleed the line of
pressure. Close the faucet.
2. Have a bucket available to catch any excess water
in the line. Remove the post fi lter by releasing the
fi ttings on each end. Use care when removing the
fi lter because you will need to reuse the fi ttings.
Push in on the grey ring in the fi tting, while pulling
the tube out with the other hand.
3. Remove the fi ttings from each end of the post fi lter (see fi gure 5). Wrap the threads
of each fi tting with new Tefl on tape, and install in the new fi lter cartridge. Tighten
securely.
4. Connect the inlet side of the fi lter to the waterline.
5. Using a bucket, hold the fi lter outlet over the bucket. Turn the main power switch to
“On” and allow water to fl ush the carbon fi nes out of the new fi lter. If the storage tank
is low, depress the pump switch to “Override” to fl ush the fi lter.
6. Once fl ushed, turn the main power switch to “Off”.
7. Reconnect the outlet side of the fi lter to the waterline and turn the main power switch
to “On”.

Mega 25 Owners Manual page 17
1
2
3
Troubleshooting
The machine will not operate at all.
Note: The water level in the storage tank must be below 7/8 full before the distiller
can be restarted.
• Make sure the power cord is plugged into the wall outlet and the outlet is working
properly.
• Make sure the main power switch is ON. If it is, the switch may be defective and
needs to be replaced. Check with a volt/ohm meter.
• Make sure the function switch is in the “Distill” position. If it is, the switch may be
defective and needs to be replaced. Check with a volt/ohm meter.
• Make sure the incoming water supply is turned on and is fl owing into the boiling
tank.
• Check for excessive water in the drip tray. Drain if necessary.
The boiling tank will not fi ll with water automatically.
Note: Make sure the saddle tapping valve or utility hook-up valve is turned ON to
supply the feed water.
• If the fl oat ball inside the boiling tank is resting against the support arm and is
fully depressing the low-level microswitch, you probably need to replace the mi-
croswitch. Check with a volt/ohm meter.
If the microswitch checks out ok, and the heating element and fan come on, then
you need to replace the heating element relay. Another indication of a bad heat-
ing element relay is the reset will pop.
• If the solenoid is making a buzzing noise, your feed water supply line may be
clogged or you may have a defective solenoid valve. Check it with a volt/ohm
meter.
The fan will not operate or is making excessive noise.
• If the fan is mounted properly on the storage tank, the fan blade is not loose
around the motor shaft and and the blade spins freely when turned by hand with-
out hitting anything, then you may have a defective fan motor. Check with a volt/
ohm meter.
• If the fan switch is in the “On” position, you may have a defective switch. Check
with a volt/ohm meter.
• If the function switch is in the “Distill” position and the heating element is not
operating either, you may have a defective function switch. Check with a volt/ohm
meter.

page 18 Mega 25 Owners Manual
6
4
5
The distiller fi lls to normal operating level, but the heating
element will not heat or bring water to a boil.
• If the reset is not popped or the fan is running and the boiling tank is full of water,
you may have a defective heating element.
• If water continues to fi ll the boiling tank after draining the tank, and the fan isn’t
operating, then you may have a defective high-level boiling tank microswitch.
Check with a volt/ohm meter.
• If the function switch is in the “Distill” position, the fan is not operating, you may
have a defective function switch. Check with a volt/ohm meter.
The boiling tank overfl ows with water.
Note: If your machine is new, make sure you have removed the wire tie used to restrain
the float during transit.
• If the fl oat actuating arm is depressing the high-level microswitches (the bottom
ones) and the fl oat rod is moving freely and fl oats accordingly with the water
level, you may have a defective microswitch. Check with a volt/ohm meter.
If the microswitches check out ok, and the heating element and fan come on,
then you need to replace the heating element relay. Check with a volt/ohm meter.
• If the microswitches and heating element relay check out ok, then you may have
a defective solenoid. Turn the main power switch to “Off”. If water continues to
fl ow into the boiling tank, then you need to replace the solenoid.
• If the fl oat is not moving freely, you may need to install a new bushing and o-ring
fl oat repair kit.
• If the fl oat ball is full of water, replace the fl oat ball.
Machine does not shut off when storage tank is full.
• If the storage tank high-level microswitch is fully depressed, then you may have a
defective microswitch. Depress both the boiling tank and storage tank high-level
microswitches. If the unit does not shut down, remove one wire from the boiling
tank microswitch. If the unit shuts down, replace the boiling tank microswitch. If
the machine does shut down, leave the wire off and remove one wire from the
storage tank high-level microswitch. If the unit shuts down, replace the storage
tank microswitch.
• If the unit does not shut down when removing the wires from testing the boiling
tank and storage tank microswitch wires, then you need to replace the main con-
trol relay.

Mega 25 Owners Manual page 19
8
7The boiling tank automatic drain valve does not open or shut.
• If water continues to drain during operation of the distiller, you may have a defec-
tive drain valve. Heavy scale may be preventing the drain valve from closing
completely. Clean the boiling tank or replace the drain valve.
• If there is no water coming from the drain valve or it is draining slowly, you may
have scale build-up in the drain valve or a defective drain valve. Clean or replace
the drain valve.
The demand pump does not work properly or not at all.
Note: The storage tank must be at least 1/8 full for the pump to operate.
• If the unit is plugged in and the main power switch is “On”, you may have a blown
fuse, defective pump switch, defective pressure switch or defective pump. Check
with a volt/ohm meter.
• If pump cycles on and off, but no water is delivered or it will not shut off after you
close the faucet or cycles on and off when not in use, you may have leaks in your
water line, a defective pressure switch, or defective pump.
• If pump does not deliver water to the faucet at a steady pressure, you may have
a defective pump.

page 20 Mega 25 Owners Manual
Electrical Schematic