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BALLAST –
The ballast is located on the top inte-
rior of the cabinet near the center of the
cabinet. Access to the ballast is gained by re-
moving the two screws, (one on each end) of
the lamp fixture. Rotate the fixture down to-
wards the bottom of the cabinet.
NIGHT COVER –
All EVM models come equipped with a
night cover as a standard feature .The handle
for the cover is located near the lamp. Grasp
the handle and pull downward until enough of
the cover has been exposed allowing the han-
dle to be placed over the retainer located on
the lower panel. In the event a night cover has
to be replaced, follow these steps: disconnect
power to the cabinet. On the top exterior of
the cabinet, there is a perforated metal cover.
Remove the cover. Lower the lamp fixture as
if you were replacing the ballast. Push the
night cover left or right and lift out. Install
the new cover in reverse order. Turn power
back on.
CLEANING EXTERIOR –
When cleaning the exterior of the
cabinet, use a soft cloth or sponge with wa-
ter and a mild detergent. Do not use any
thing abrasive as this will mar the finish.
Clean the glass with a glass cleaner of your
choice.
CLEANING INTERIOR -
Disconnect the power and remove all
product. Allow the cabinet to warm to room
temperature. Remove the front access panel
and monitor the amount of water going into
the condensate pan. It may be necessary to
remove some water so the pan does not over-
flow. Use a soft cloth or sponge with a mild
detergent to clean the interior. Check the
drain to ensure no debris has become lodged
in it during cleaning. Make sure the drain
hose(s) are into the condensate pan, set
timer for correct time of day, install all re-
moved covers. Wipe interior dry and restart
cabinet. Allow cabinet to achieve proper
operating temperature before reloading
product.
REFRIGERATION –
The EVM models employ a refrigera-
tion system using a hermetic compressor,
with refrigerant flow being controlled
through the use of a capillary tube. In the
event the capillary tube may become par-
tially or fully restricted, replace the entire
tube. Do not attempt to cut and/or splice the
tube. Capillary tube sizes are:
EVM3977 .049 I.D. x .020 O.D. x 78 inches
long. EVM 5277 .070 I.D. x .020 O.D. x 75
inches.
LEAK TESTING –
The test gas cylinder must be equipped
with a pressure gauge and regulator so that sys-
tem test pressures do not exceed maximum al-
lowable limits. Do not ever use anything other
than a R-22/Nitrogen mixture for leak testing.
Attach a refrigerant test gas cylinder to
your service manifold and connect the manifold
to the charging port on the liquid line valve.
Charge an R-22/Nitrogen mixture into
the system, raising the pressure to the
unit's nameplate for the low side and high
PAGE 8
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Troubleshooting
