Cleaning The Air Filter (Models Whxc3750 & Whxc3750-Pro) - Westinghouse WHXC3750 Instruction Manual

MAINTENANCE
Cleaning the Air Filter
(Models WHXC3750 & WHXC3750-PRO)
The air filter must be cleaned after every 50 hours of
use or 3 months (frequency should be increased if
generator is operated in a dusty environment).
1. Turn off the generator and let it cool for several
minutes if it's been running.
2. Move the generator to a flat, level surface.
3. Unscrew the knob at the bottom of the air filter
assembly (see Figure 30) anti-clockwise until the
air filter cover can move outwards freely.
4. Slowly lift up and disengage the top tabs of the
air filter cover (see Figure 30). Clean the air filter
cover with a rag and place it aside.
Figure 30 – Removing Air Filter Cover
5. Remove the foam air filter element while taking
care to note the position of the notch (see Figure
31). The air filter element must be re-installed later
with this notch in the same position.
Figure 31 – Removing Air Filter Element
32
6. Pay special attention also to the metal backfire
plate in the upper left corner of the air filter
assembly box. This metal plate must be in its
proper position when re-installing the air filter
element (see Figure 32).
Figure 32 – Position of Metal Backfire Plate
7. Wash the air filter element in a solution of
household detergent and warm water or
alternatively in non-flammable solvent. Slowly
squeeze the foam in the liquid for a thorough
cleaning action. Then remove the foam and
squeeze out the liquid.
NOTICE
NEVER twist or tear the air filter element during
cleaning or drying. Apply only a slow and firm
squeezing action.
8. Rinse the air filter element by immersing it in fresh
water and applying a slow squeezing action.
NOTICE
Never dispose of the used cleaning solution or
solvent by dumping it into a sewer, on the ground,
into groundwater or into a waterway. Always be
environmentally responsible. Follow the guidelines
of the governmental agencies for proper disposal
of hazardous materials. Consult local authorities or
reclamation facility.
9. Dry the air filter element by repeatedly applying a
slow firm squeezing action.
10. Coat the air filter element in clean engine oil and
then thoroughly squeeze out the excess liquid.
11. Re-install the air filter element inside the air filter
assembly box. Make sure the metal backfire plate is
in its proper position (see Figure 32) and the notch
in the foam is correctly located (see Figure 31).