AERCO BMK 2000DF - Manual (Page 101)

Benchmark 1500DF - 2000DF Boilers
CHAPTER 7 – MAINTENANCE
OMM-0098_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 101 of 196
GF-144 Ph.: 800-526-0288 04/01/2014
7.8 AIR FILTER CLEANING & REPLACEMENT
The Benchmark boiler is equipped with an air filter (part no. 88014) which should be cleaned
and re-oiled every 12 months and replaced every 24 months. The air filter is located at the inlet
of the air fuel valve at the top of the boiler as shown in Figure 7-7.
To inspect/replace the air filter, proceed as follows:
Air Filter Cleaning & Replacement Procedures
1. Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit.
2. Remove the top shroud from the unit by grasping the top handle and lifting straight up.
This will disengage the shroud from the four (4) pins in the side panels.
3. Refer to Figure 7-7 and locate the air filter attached to the air/fuel valve inlet.
4. Using a flat-tip screwdriver or 5/16” nut driver, loosen the clamp securing the filter to the
inlet flange of the air/fuel valve. Remove the filter and clamp.
5. The filter may be cleaned in hot soapy water to remove oil and dirt. The filter should be
thoroughly dried and then sprayed with a light coating of oil, such as WD-40, prior to
reinstallation.
6. Each replacement air filter is equipped with its own clamp. Therefore, simply install the
replacement air filter on inlet flange of the air fuel valve and tighten the clamp with a flat-
tip screwdriver or 5/16” nut driver.
7. Replace the top shroud on the unit and return boiler to service use.
Figure 7-7: Air Filter Location
GAS
TRAIN
AIR FILTER
AIR FILTER
HOSE CLAMP
AIR/FUEL
VALVE
MANUAL
SHUT-OFF
VALVE