U-Line H-7127 User manual

PAGE 1 OF 21 1221 IH-7127
EVAPORATIVE COOLER
1-800-295-5510
uline.com
πH-7127, H-7128
H-8657, H-9928
Para Español, vea páginas 8-14
Pour le français, consulter les pages 15-21
SAFETY
WARNING! Not for use by children.
WARNING! Not for use by persons with reduced
physical, sensory or mental capabilities.
WARNING! Review the owner's manual before
use.
To reduce the risk of electric shock, fire or injury:
• Do not operate any evaporative cooler with a
damaged cord or plug.
• Do not run power cord under carpeting or cover
with throw rugs, runners or similar coverings. Arrange
power cord away from traffic areas to avoid tripping
hazards.
• Always unplug the power cord to the evaporative
cooler before performing inspections or repairs.
• Do not step on or roll over power cord with heavy or
sharp objects.
• Do not operate evaporative cooler unless all
evaporative media is securely in place.
• Test the GFCI receptacle or breaker monthly to
ensure it is functioning properly.
• Remove the plug from the electrical receptacle by
pulling on the plug, not the power cord.
• Operation near open flames or sparks is not
recommended.
• If operating near open flame or sparks, ensure the
pump is continuously running in order to saturate
and wet evaporative media.
• To prevent damage when cleaning evaporative
cooler, ensure water does not get into the motor or
electrical system.
The use of extension cords with evaporative cooler is not
recommended. However, if use of an extension cord is
required, the following must be met:
a. Use properly-grounded 14 AWG or greater for
H-7127, H-8657, and H-9928.
b. Use properly-grounded 12 AWG or greater for
H-7128.
c. Extensions cord must not exceed 50 ft. in length.
d. Extension cord must be properly grounded.
• Evaporative coolers should not be modified in
any way (other than repairs made by qualified
individuals with manufacturer replacement parts.
• If the evaporative cooler is damaged or
malfunctions, do not continue to operate it. Refer to
Troubleshooting on page 5 or call Uline Customer
Service at 1-800-295-5510.
NOTE: Proper maintenance is required to
keep unit in peak operating condition.
See page 4 for Maintenance.

PAGE 2 OF 21 1221 IH-7127
SETUP
UNPACKING
The unit is shipped completely assembled and sitting on
a plastic pallet with a large cover box strapped over the
unit. Cut the straps and remove the box by lifting it over
the unit. Remove pallet and place cooler on a level
surface.
CONNECTING THE WATER AND
ELECTRICITY
WATER CONNECTION
NOTE: Unit must be in upright and level position.
After the unit has been thoroughly tested at the factory,
a special two-sided brass hose adapter is attached to
the water inlet on the side of the unit, which is below
the spray bar adjustment and drain valves. A standard
garden hose is attached to this brass hose adapter and
cinched down to preclude leaks. Visually verify that the
hose washer is in position and in good condition.
NOTE: Water supply inlet pressure should be
limited to 50 psi maximum.
Once the hose connection is made, water may be
turned on to the unit. Water should now be entering
through the float valve to fill the sump tank. To verify that
connections are secure, visually inspect connections for
leaks. Remove the cooling pads. See page 7 for details.
Once the sump tank is filled, the water flow should stop
and the inlet connections may now be visually checked
for leaks. Pay particular attention to the hose connection
into the float valve and the connections into the brass
inlet fitting.
All of these inspections have been performed at the
factory but shipping may have caused connections
to loosen.
The cooling pads may now be replaced. See page 7
for details.
ELECTRICAL CONNECTION
NOTE: Unit must be in upright position with
cooling pads installed!
This unit utilizes a single power cord and control switches.
Before connecting the plug to an outlet, ensure that
there is no standing water where the cord may lie or the
operator is standing. The use of separate multiple outlet
devices are not recommended.
When making electrical connections, ensure that local
and national codes are adhered to. Use only with GFCI
protected receptacles.
Please refer to the barcode product label on the side of
the unit for specific electrical requirements.
NOTE: H-7128 must be used with a 5-20R outlet.
GFCI/ELCI
These coolers utilize a GFCI (Grounded Fault Circuit
Interrupter) or ELCI (Equipment Leakage Circuit
Interrupter) to help protect users against ground
electrical faults, which prevent some fire and electrical
shock hazards. These devices are intended to trip at
very low leakage currents.
• H-7127, H-8657, and H-9928 use a GFCI, which is built
into the power cord
• H-7128 uses an ELCI, which is built into the power
cord and requires a 5-20R (120V) electrical outlet
• The GFCI on H-7127, H-8657, and H-9928 will
automatically reset when the evaporative cooler is
plugged into an electrical outlet. The ELCI on H-7128
will not automatically reset when the evaporative
cooler is plugged into an electrical outlet; the reset
button located on the ELCI device must be pressed
each time the evaporative cooler is plugged in.
LIQUID LEVEL INDICATOR
LIQUID LEVEL INDICATOR / PUMP SHUTOFF
A liquid level indicator with integral shutoff gives a visual
indication of the water level in the evaporative cooler
and will shut off the pump once the water reaches a
certain threshold. When this occurs, a red light on the
control panel will illuminate to draw attention to the low
water level condition and alert the user that the pump
has shut off. This light may cycle on and off for a few
minutes to draw attention to the low water condition as it
tries to exhaust the remaining water.

PAGE 3 OF 21 1221 IH-7127
OPERATION
PLACEMENT OF THE UNIT
There are three primary considerations when deciding
where to place this unit:
1. Fresh Air Supply – The inlet side of the unit
(pad side) must be placed so as to ensure that a
smooth, uninterrupted supply of fresh air is available.
2. Air Pattern – The cool air discharged from
(fan side) the unit should have a clear area in which
to circulate, being as free of obstructions as
possible.
3. Ventilation (Exhaust) – There should be a defined
place in which the air from unit can be exhausted
from the area being cooled. This is to prevent the unit
from recirculating air that has already been through
the cooling process.
A primary consideration when actually deciding where
to place the unit is the direction of the airflow. The unit
creates a fan-shaped air pattern that circulates air over
a large area. This pattern may be disturbed or broken
up by obstacles such as shelves, workbenches, etc. It is
important to insure that a clean, unbroken path for the air
from the unit is provided to the maximum extent possible.
You may want to raise the unit above any low
obstructions in order to increase the overall coverage.
When raising the height, ensure that the platform
constructed for holding the unit is stable, well constructed
and will not allow the unit to tip over. The unit must be
level and in the upright position, with casters locked.
When supporting with a platform allow for the full weight
of a functioning unit by including the weight of the water
both in the sump tank and the added weight of the water
saturated cooling pads. The total weight could be in
excess of 500 lbs. (227 kg.).
When the unit is placed near a wall or other obstruction,
it is recommended that a distance of at least 3 feet from
any wall or obstruction to the face of the cooling pads.
This allows the unrestricted flow of warm air to the cooling
pad side of the unit. If multiple units are used near
each other, be sure to aim the unit so that the air flows
compliment each other. Opposition will negate the
airflow and allow an area of dead air to accumulate
between units.
FILLING WITH WATER
Once the unit is connected to a water supply, turn on the
supply valve that fills the sump tank with water. Once the
sump tank is full, the float valve will shut off the supply
flow. (50 psi max. inlet water pressure.)
STARTING THE PUMP AND ADJUSTING
THE WATER FLOW
CAUTION! Do not run pump when sump is dry.
1. Once the sump tank is full, move the pump switch to
the ON position to turn on the pump.
When first turning on the pump, the level in the sump
will drop suddenly and restart the flow of supply
water. This is a normal condition, as the cooling pads
require a large amount of water for proper wetting.
When the unit is new, the new pads will require an
initial 'breaking-in' period. This period is required for
the pads to begin readily absorbing water. It may
require up to a week to achieve maximum efficiency.
2. It is important that the spray bar is properly adjusted
when first starting the water flow in the unit. To
increase or decrease the flow use the spray bar
adjustment valve on the side of the unit.
NOTE: Evaporative media should appear wet.
STARTING THE FAN
NOTE: Cooling pads must be installed and wet,
and caster brakes must be engaged.
Start the fan by turning the fan switch to desired speed.
Adjust the speed slowly allowing the fan to obtain its full
speed at the low speed before going to meidum and
high.
Pads should appear wet; however, cascading amounts
of water can actually reduce cooling efficiency. Proper
adjustment will prevent problems and increase cooling
capacity.
When turning the fan off at the end of the day or
week, the pump should be turned off about 15 minutes
before the fan to allow the cooling pads to dry. This will
increase the life fo the pads.

PAGE 4 OF 21 1221 IH-7127
MAINTENANCE
Very little maintenance is required on the unit. Primary
maintenance is cleaning. Keeping the unit clean will do
more than any other single item to maintain your unit in
peak operating condition.
DAILY MAINTENANCE
Daily, the pump should be turned off approximately
15 minutes before the fan is turned off. This will allow
the cooling pads to dry out and help extend their life,
minimizing growth of mildew, mold, bacteria and other
odor-causing elements.
WEEKLY MAINTENANCE
At the end of the week or at a scheduled time, the unit
should be shut down and the sump tank should be
drained. Close the spray bar adjustment valve and
open the drain valve. A hose may be attached to the
drain valve to drain the water to a remote disposal area.
Once the drain valve is open, starting the pump will
drain the unit. When the pump has removed most of the
water a small amount will be left in some areas.
Once the sump is drained and the power disconnected,
the pads may be removed for inspection of the sump
tank. If the unit is in a dusty environment, dust may
collect in the sump tank over time.
Vacuum out dirt and any remaining water using a wet/
dry shop vacuum and wipe clean with a cloth. Inspect
and clean the inlet strainer located on the bottom of
the pump. Replace pads in correct airflow direction,
referring to label on the pads.
MONTHLY MAINTENANCE (OPTIONAL)
Hard water mineral treatment strips are available for
purchase under the Uline model number H-6108. Each
box contains one four-month supply. Place one hard
water mineral treatment strip into the bottom of the
reservoir to prevent buildup due to hard water.
STORAGE
1. Drain all water from the sump tank and clean
as above, ensuring that the pads and sump are
completely dry.
2. Roll up power cord and secure it so that it is not
rolled over, tripped over or caught in equipment.
3. Cover the unit completely to prevent dust build up
and store in a dry area.
CAUTION! Disconnect power before removing
cooling pads from the unit!
NOTE: Power cord may be replaced only by the
manufacturer or qualified agent!

PAGE 5 OF 21 1221 IH-7127
TROUBLESHOOTING
OPERATING ISSUE POSSIBLE CAUSES RECOMMENDATIONS
Evaporative cooler fails to start or
deliver air. No electricity to the evaporative
cooler—circuit breaker tripped,
GFCI tripped and/or power
unplugged or damaged.
Motor overheated and/or frozen.
Check power reset breaker. Reset
GFCI/ELCI, plug in cord or replace
if damaged.
Reconnect motor.
Evaporative cooler starts, but air
delivery is inadequate. Evaporative media side of the
evaporative cooler is too close to
a wall.
Fan motor failure.
Capacitor failure.
Move evaporative cooler at least
three feet from the wall.
Replace fan motor.
Replace capacitor.
Water draining from the evaporative
cooler. Seat in float valve leaking.
Drain plug not tight.
Replace float valve.
Tighten plug.
Knocking, shaking or rattling sounds. Loose parts.
Fan blade rubbing shroud.
Check and tighten where needed.
Inspect and adjust, or replace fan
blade.
Musty or unpleasant odor. Stale or stagnant water in tank.
Evaporative media is mildewed or
clogged.
Drain, flush and clean tank.
Replace evaporative media.
Water droplets in the air stream. Too much water delivered to
evaporative media.
Leaking hose.
Make sure evaporative media is
properly positioned in the frames
and evaporative cooler is level.
Tighten connection or replace
hose.
WARNING! Turn off all power to the evaporative cooler before attempting to troubleshoot any of the following
operating issues. For problems not listed, please contact Uline Customer Service at 1-800-295-5510.