Instruction Manual

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 7 – MAINTENANCE
Page 98 of 192 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0082_0J
05/21/2014 Ph.: 800-526-0288 GF-130
7.9 AIR FILTER CLEANING & REPLACEMENT
The Benchmark boiler is equipped with an air filter (P/N 59139) 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
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 Replacement
MIRROR/VIEWPORT
HEAT
EXCHANGER
GAS TRAIN
ASSEMBLY
AIR FILTER
BLOWER
AIR FILTER
HOSE CLAMP
AIR/FUEL VALVE