Cooler Operation; General Inspection - PMI WH2906 Manual De Uso Y Cuidado

Connect Water Supply
CAUTION: All plumbing installations must comply with
local building and safety codes, and must be performed by
qualified personnel only.
NOTE: Coolers should not be connected to "soft" water systems. Soft
water will accelerate corrosion and decrease the effective life of the
pad and the cooler cabinet. Connect water line as follows:
A water supply valve should be installed at a convenient location,
to allow the water supply to be turned on and off for servicing or
winterizing. Minimum 1/4" diameter tubing should be used to
provide water to the cooler, larger tubing is recommended if the
distance from the valve to the cooler is greater than 100 feet, then
reduced to 1/4" at the unit.
Install float valve in the cabinet as shown in Figure 3.
Connect tubing from water supply to float valve. Place
compression nut and ferrule over end of tubing, insert tube into
float valve then tighten compression nut to secure.
Turn on water supply and check for leaks. Adjust float to maintain
the water level at 2" to 2 ½".
Install Bleed-off (Model WH2906)
To minimize mineral scale "build-up",
use the included bleed-off assembly.
Remove the cap from the bleed-off tee;
insert the 1/4" diameter black tubing
and route the tubing through the 7/16"
hole in the side of the cooler opposite of
the float valve. Run bleed-off tubing to a
proper drain To prevent siphoning of .
the water, make sure t at the bleed-off h
tee is above the water level.
NOTE: Drain water in accordance with local plumbing codes.
Install fitting for drain pump (HE2913)
To minimize mineral scale "build-up", these window cooler models
include an automatically timed drain pump for removing mineral laden
water from the cooler pan. It is factory set to operate every 8 hours of
unit operation in the "COOL" mode and will run for 5 minutes. Install
the drain bushing for the auto-dump drain pump discharge hose in the
side of the cooler as follows: (See figure 4)
Locate drain hose assembly in bottom of cooler and remove lock
nut from drain bushing (leave rubber washer in place). Check that
the opposite end of the hose is still connected to the drain pump.
Push drain bushing through hole in side of cooler (opposite of float
valve), rotate hose until anti-siphon fitting tube is pointing toward
bottom of cooler, then assemble and tighten lock nut.
Connect a suitable drain line (garden hose, etc) to the drain
bushing. Never drain water onto a sidewalk or other hard surfaced
area; mineral build-up or a slipping hazard may occur.
Fig 4

Cooler Operation

Controls:
The rocker control switches are used to select the operating mode
of the window cooler. These switches control fan speed (HI / OFF /
LOW) and the cooling operation (ON / OFF).
Grille airflow control:
Rotate each louver ring until desired air flow direction is reached.

GENERAL INSPECTION

Initial Start-up or Annual Inspection
CAUTION:
Disconnect all electrical power to the cooler
before attempting to install, open, or service your cooler.
Before start-up of the cooler for the first time, or at the beginning of
each cooling season, make sure that all required connections,
adjustments, etc. have been made. Verify that:
Cooler mounting is level; window duct is sealed.
Power supply cord is correctly routed, safe and secure.
Bleed-off / drain pump is correctly installed and fully functional.
Water line securely connected, turned on, no leaks noted.
Float valve is correctly installed, adjusted for proper water level
and fully operational.
Pump impeller turns free and smooth. If in doubt, remove
impeller cover (see "Cleaning Pump").
Blower wheel turns freely.
Start-up Check List
CAUTION
: Never operate cooler with pad frame(s) or air
outlet grille removed. This will result in an overloaded
condition and may damage the blower motor.
To verify and check out the cooler installation on initial or annual start-
up, the following procedure should be followed.
Open building exhaust / relief vents (windows, doors, etc.)
Plug supply cord into receptacle. Switch "COOL" to "ON".
Verify that the pump starts and pad evenly wets.
Switch "FAN" to "HIGH", observe that motor starts and runs.
Switch to "LOW", observe that motor changes to low speed.
In case of trouble on any of these steps, refer to the Troubleshooting
Chart on page 6.
Cabinet Inspection Checklist
After initial start-up and for a few weeks afterwards, check for and/or
observe the following: Refer to the Troubleshooting Chart on
necessary.
Leaks from water lines, pad frame, cabinet, etc.
Cooler pad: even wetting, no dry streaks.
Confirm water level depth setting is correct.
Verify full, even flow in water distribution system.
Blower wheel rotates freely, no unusual noises.
Check motor mounting, cabinet hardware, setscrews on blower
wheel are tight.
page 6 i
Evaporative Window Cooler - Use and Care Manual
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