Aerovent IM-250 User Manual

IM-250

June 1997

General Installation, Operation and Maintenance Instructions For Aerovent Products

Air Cooler

1. If air cooler is furnished with protective paint, the washer
surfaces should be inspected after installation is completed.
Any painted areas damaged due to welding, scratching, etc.,
should be retouched. Once a year the interior and exterior
should be examined and repainted if necessary.

2. Drain and thoroughly clean the tank, eliminators and baf­fles as required to maintain clean water and surfaces. Dirty
operation not only reduces washer life and efficiency, but
also affects maintenance and operation of the total system.
Eliminators should be inspected with the following check­list:

a. Periodically inspect side and top seals for leaks.

b. Check minimum water level.

c. Clean blades as required. Cleaning can be effected by

flushing the blades from both sides with a high pressure
water hose. Use a flexible round brush to clean out the
corrugations. Routine cleaning in this manner will usu­ally prevent the necessity of using any cleansing agent.

d. Do not remove the blades for routine cleaning.

e. Once a year the blades may be removed for a thorough

cleaning.

f. Inspect top plate assembly while blades are out.

g. Do not force solid objects between the blades for any

purpose.

3. Two sets of suction screens are furnished with each wash­er. One set should be in the washer tank at all times.
Screens should be inspected daily. If screens are dirty,
insert clean screens and remove dirty ones. Clean dirty
screens with hose.

4. Spray nozzles should be checked regularly for uniform
operation. Any nozzle partially clogged or worn should be
cleaned or replaced. An easy way to inspect nozzles is to
reduce spray pressure on the nozzles so that they can be
seen through the observation door.

5. After operating for a short period, examine the interior of
air washer for any scale deposit. Samples of make-up water
should be analyzed to determine if water treatment is
required. Where water treatment is not used, a continuous
flow of water is recommended through the overflow to
reduce concentration of solids, salts and acid in the tank.

6. If water carryover is observed, the following should be
noted and corrective action taken:

a. Carryover on eliminator blades is of two general types:

mist and droplet.

b. Mist is usually the result of high spray pressure and/or

bent or defective blades.

c. Droplet carryover is usually the result of low or high air

velocity, bent or defective blades, dirty blades, and/or
grease or other insoluble substances on the blades.

d. Carryover from leaks at the seals would be in droplet

form.

e. Low water level will cause carryover from under the

blades and excessive foaming.

f. Carryover of droplets can also be caused by improper

seating of the top plate assembly.

7. The complete manifold and riser assembly may be drained
by removal of the threaded PVC plug located on the under­side of the manifold tee. Drain complete unit, including
pump, for winter storage.

©1997 Aerovent

®

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