Unified Brands VENTILATION SYSTEMS User Manual

Page 24

fig. 26

3. Slot-Type Internal Air Make-Up
Hoods provided with "Short-Cycle" type air
make-up only are supplied with a slot which is
designed to direct the air along the top of the
hood and into the exhaust plenum inlet. The
volume of air can be regulated through the
use of a combination balancing damper and
fire damper located on top of the air make-up
plenum. [Refer to fig. 24]

G.Auto Wash

Plenum wash down is a feature of the Energy
Aire Ventilator which eliminates the need to
frequently clean the grease extraction area.
The wash down cycle normally occurs
immediately after the cooking period and
does not occur while the fans are ON. A
water/detergent mixture is sprayed from a
series of nozzles to remove accumulated
grease and grime which flows out through the
drain. A vacuum breaker/check valve must
be installed upstream of the detergent
injection point [and a minimum of 6" higher
than the ventilator inlet] to prevent detergent
from backflowing into the building water
supply. [Refer to fig. 14]. Hot water should
be at 120

oF and pressure must be between

20 psig and 40 psig flow. The duration of the
wash down cycle is adjustable and will vary
depending of length of cooking cycle, type of
cooking equipment used, concentration of
detergent, water pressure and temperature,
among other considerations. See Sec. VI, b.,
"Setting the PAWS", for instructions.

**Note: See Page 28 cut sheet for detergent

information.

H.Cold Water Mist [Optional]

To aid in extracting particulates from the
exhausted air and to aid in cooling the
exhaust, a cold water mist option is available.
This is especially useful with charbroilers.
Cold water mist is a fine spray within the

plenum area which runs whenever the fans
are ON. This com- plements the baffle
system on Energy Aire Systems and does not
replace the wash down feature.

Water

pressure should be between 30-40 psig flow.

I. Lights

1. Surface Mounted - Incandescent
To replace the bulb unscrew the globe.
Fixture will accept bulbs up to a maximum of
100 watts. Screw the bulb into the socket
and then proceed to screw the globe tightly
in position. Be sure that the inner silicone
gasket is in place before installing the globe

2. Recessed - Incandescent
To replace the bulb, loosen screws which
retain diffuser panel. Diffuser panel is
attached to housing with a cable to prevent it
from falling or becoming lost. Fixture will
accept bulbs up to a maximum of 150 watts.

3. Recessed - Fluorescent
To replace bulbs, unscrew diffuser panel.
The diffuser is attached to a housing with a
cable to prevent it from falling or being lost.
Two [2] bulbs are required for each fixture.

Fixture Size

[nominal]

Bulb Size

24"

[2] F20T12TS

36"

[2] F30T12RS

48"

[2] F40T12RS

VIII. PERIODIC MAINTENANCE

A.Baffle Filters

Filters should be removed and cleaned at least
weekly, depending on hours of operation.
Filters may be cleaned by soaking in a strong
detergent

solution,

running

thru

dishwasher. When replacing, make sure filters
and handles are running vertically, and filters
are seated properly, refer to Sec. VII, A.1, pg.
15.

B.Modular Grease Extractors

Modules should be removed and cleaned at
least weekly, depending on hours of operation.
Modules may be cleaned with a brush and a
strong detergent solution, or run thru the
dishwasher. When replacing modules, make
sure they are seated properly, refer to Sec. VII,
B.1, pg. 16.

C.Grease Trough

Should be checked weekly for grease build up,
and

cleaned

with

strong

detergent,

necessary.