Series 4500 Wet/Dry Vacuums
(Models: 4510W, 4520W, 4520S & 4520P)
Thank you for your recent Sterling purchase. You have bought a high quality, long-
life commercial vacuum cleaner. For your safety and continued satisfaction with
this product, please read this owner’s manual carefully before using. For your infor-
mation, all parts used in the manufacturing of this vacuum cleaner meet or exceed
rigid quality control standards. We stand behind all our products and are available
to assist you with a knowledgeable and dedicated staff. If we can help you in any
way, please call Customer Service at 844-822-7787.
We also recommend that you visit our website www.sterlingna.com for the fastest
most efficient way to complete your product registration and see other Sterling
products and accessories to meet your cleaning needs.
Models 4510W, 4520W & 4520S
To Assemble
(4510W Only):
Insert casters into sockets on bottom of canister. Push casters until seated. Attach
hose to coupling on front of can.
To Connect Hose:
Insert the hose end into the tank inlet until it clicks. To remove the hose, press the button on
top of the hose inlet, and remove hose.
To Operate:
(
1) For Dry Pickup (4520W): Install paper bag on inlet inside of tank. Insert the cloth filter assembly in the top
of the tank. Install motor head. The cloth filter located inside the can provides highly efficient separation
of dust and dirt particles from the incoming air stream.
(2) For Wet Pickup: Remove paper bag and cloth filter from tank. Make sure foam filter sleeve is installed on
float assembly. Make sure float moves freely. When the liquid level in the tank rises to a point just below
the inlet, the float assembly shuts off air flow, thus preventing overflow and possible damage to the
vacuum motor.
To Maintain:
This vacuum cleaner contains no user serviceable parts. If repair is needed, please take the vacuum
cleaner to an authorized Sterling factory service center.
CAUTION
Never operate vacuum for dry pick-up unless the cloth filter is properly installed and in good condition.
CAUTION
A disposable paper bag cannot be used during liquid pick up.
CAUTION
Do not use this vacuum to pick up hazardous materials without HEPA filter being installed.
CAUTION
Never lubricate the vacuum cleaner motor. The motor bearings are permanently sealed. This vacuum is
intended for indoor or outdoor use and for wet pickup, however, it is not intended to be exposed to rain.
