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Sherwin-Williams SUPERNOVA 820–002 - User Manual

Sherwin-Williams SUPERNOVA 820–002
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OWNER’S MANUAL
820–008 Rev. M
SUPERSEDES
Rev
. L
1/2 gpm, Portable, Electric SUPERNOVA AIRLESS
P
AINT SPRAYER
PATENT
NO. 4,323,741
Model 820–002, Series F
Without
hose, gun, or filter
2750 psi (190 bar) MAXIMUM WORKING PRESSURE
INDEX
Warnings 2.
. . . . . . . . . . . . . . . . . . . . . . . .
Avertissement 4
. . . . . . . . . . . . . . . . . . . .
Advertencia 6
. . . . . . . . . . . . . . . . . . . . . . .
Setup 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing
Guidelines
9.
. . . . . . . . . . . . . . .
Adjust
the Spray Pattern
10.
. . . . . . . . . .
Application
Methods
10.
. . . . . . . . . . . . .
Shutdown
and Care
11.
. . . . . . . . . . . . .
Troubleshooting
Guide
12.
. . . . . . . . . . .
Service 14–19
. . . . . . . . . . . . . . . . . . . . . .
Displacement
Pump
14.
. . . . . . . . . . .
Connecting
Rod & Bearing
16.
. . . . . .
Drive Assembly 16.
. . . . . . . . . . . . . . .
Capacitor 17
. . . . . . . . . . . . . . . . . . . . . .
Motor 17
. . . . . . . . . . . . . . . . . . . . . . . . .
Pressure
Control & Circuit Board.
18.
Calibrating
the Pressure Control
19.
.
Parts Drawing & Lists 20.
. . . . . . . . . . . .
Accessories 23
. . . . . . . . . . . . . . . . . . . . .
Technical
Data
Back Cover.
. . . . . . . . . .
Warranty Back Cover.
. . . . . . . . . . . . . . .
The
SHER
WIN–WILLIAMS COMP
ANY
, CLEVELAND, OHIO 441
15
This
manual contains Important
W
arnings and Instructions. Read the
manual and keep it for reference.
Liquids
can be injected into the body by high
pressure airless spray
or
leaks – especially hose leaks.
Keep
body clear of the nozzle. Never stop leaks with any part of the
body.
Drain all pressure before removing parts.A
void accidental trig
-
gering
of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
“Surgical
T
reatment”.
Failure to follow this warning can result in amputation or serious
injury.
FIRE
AND
EXPLOSION HAZARD
SKIN INJECTION
HAZARD
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Spray
painting,
flushing or cleaning equipment with flammable liq
-
uids
in confined areas can result in fire or explosion.
Use
outdoors or in extremely well ventilated areas. Ground equip
-
ment,
hoses, containers and objects being sprayed.
Avoid
all ignition sources such as
static electricity from plastic drop
cloths,
open flames
such as pilot lights, hot objects such as ciga
-
rettes,
arcs from
connecting or disconnecting power cords or turn
-
ing
light switches on and off.
Failure
to follow this warning can result in death or serious injury
.
NOTE: This
is an example of the DANGER label on your sprayer
.
This label is available in other languages, free of charge.
See page 23 to order
.

Table of Contents

Questions and Answers

  • L
    Louis JacksonAug 17, 2025
    How to increase paint pressure on my Sherwin-Williams SUPERNOVA 820–002 Paint Sprayer?
    • S
      Scott AcevedoAug 17, 2025
      If you're experiencing insufficient paint pressure with your Sherwin-Williams Paint Sprayer, here are a few things to check: * Ensure that the pressure setting isn't too low. Increase it to the desired level. * The spray tip might be too big or worn. Change the spray tip to a more suitable size or replace it if worn. * The pressure control could be frozen or damaged due to overpressurization. Thaw, change, remove, or clean and replace the pressure control. * The pump parts may be worn. Service them.
  • R
    Raymond JohnsonAug 19, 2025
    What causes spitting from the spray gun of my Sherwin-Williams Paint Sprayer?
    • R
      Randy HallAug 19, 2025
      Spitting from the spray gun of your Sherwin-Williams Paint Sprayer can occur due to: * Low paint supply or an empty pail. Fill the paint supply and reprime the sprayer. * The sprayer sucking air or the gun needle not seating properly. Tighten the fittings and service the gun.
  • S
    Shawn RivasAug 22, 2025
    Why is paint running or sagging when using my Sherwin-Williams Paint Sprayer?
    • A
      Amber RamirezAug 22, 2025
      If paint runs or sags when using your Sherwin-Williams Paint Sprayer, it's likely because the spray tip is too big or worn. Try changing the spray tip.
  • J
    James AdamsAug 25, 2025
    What to do if my Sherwin-Williams SUPERNOVA 820–002 Paint Sprayer electric motor stops while spraying?
    • J
      jordanjosephAug 26, 2025
      If the electric motor of your Sherwin-Williams Paint Sprayer stops while spraying, here's what you can check: * Ensure the power or extension cord is properly plugged in and not damaged, and that the building circuit fuse hasn't blown. Reset or replace as needed. * The overload switch may have opened. To resolve this, unplug the cord, relieve pressure, allow the motor to cool, and then decrease the pressure setting. Clear any dust or overspray from the motor's air passages. * The pressure setting might be too low. Increase the pressure. * The spray tip could be plugged. Remove and clean it. * The extension cord might be the wrong type. Use a grounded extension cord with a maximum length of 200 ft (61 m), 3 wires, and a minimum gauge of 12.
  • Q
    qblackAug 27, 2025
    Why won't the electric motor of my Sherwin-Williams Paint Sprayer run?
    • J
      Justin TorresAug 28, 2025
      If the electric motor of your Sherwin-Williams Paint Sprayer won’t run, consider these potential causes: * Check if the power or extension cord is unplugged, or if a building circuit fuse has blown. Reset or replace as necessary. * The overload switch may have opened. Unplug the cord, relieve pressure, allow the unit to cool, and then decrease the pressure. * Ensure the pressure setting isn't too low. Increase the pressure accordingly. * The pressure control might be frozen or damaged due to overpressurization. Thaw, change, remove, or clean and replace the pressure control.
  • J
    juliereevesAug 30, 2025
    What to do if my Sherwin-Williams SUPERNOVA 820–002 Paint Sprayer electric motor runs but has no or low output?
    • R
      Robert GoodwinAug 30, 2025
      If the electric motor of your Sherwin-Williams Paint Sprayer runs but there's no or low output, consider these potential issues: * The piston ball check may not be seating properly. It needs to be serviced. * The piston packings might be worn or damaged. They need to be replaced. * The intake valve ball check may not be seating properly. It needs to be serviced. * The displacement pump could be frozen or the gear train damaged. Thaw or replace the pump. * The pressure control might be frozen or damaged by overpressurization. Thaw, change, remove or clean, and then replace the pressure control. * The sprayer may not be primed. Prime the sprayer.
  • A
    ashley69Sep 2, 2025
    Why does my Sherwin-Williams Paint Sprayer electric motor hum but not run?
    • R
      Richard HughesSep 2, 2025
      If your Sherwin-Williams Paint Sprayer's electric motor hums but doesn't run, consider these possible causes: * There may be a circuit board failure, which requires replacing the circuit board. * Low voltage could be the issue. Ensure you're not using more than 200 ft (61 m) of 12-gauge extension cord; use a longer fluid hose instead. Also, check that the power supply is at least 110 Volts. * Capacitor failure. Replace the capacitor. * The drive assembly may be damaged, requiring replacement.
  • M
    masonsmithSep 5, 2025
    What causes tails or fingers in the spray pattern of my Sherwin-Williams SUPERNOVA 820–002 Paint Sprayer?
    • S
      Shelby HoodSep 5, 2025
      If you're seeing tails or fingers in the spray pattern of your Sherwin-Williams Paint Sprayer, here are some potential causes: * The pressure setting might be too low. Increase the pressure. * The outlet hose could be dirty or plugged. Clean the hose. * The spray tip may be too big or worn. Change the spray tip. * The paint supply might be low, or the pail is empty. Fill the paint supply and reprime the sprayer. * The paint could be too viscous. Thin the paint. * You might be using the wrong type of hose. Use a minimum of 50 ft (15.2 m) static-free nylon hose only (wire braid hose is unacceptable).
  • S
    Sarah SanchezSep 7, 2025
    What causes excessive surge at the spray gun of my Sherwin-Williams Paint Sprayer?
    • A
      Alexandra HudsonSep 7, 2025
      Excessive surge at the spray gun of your Sherwin-Williams Paint Sprayer can be caused by: * A plugged spray tip. Remove and clean it. * A spray tip that is too big or worn. Change the spray tip. * Pressure control frozen or damaged by overpressurization. Thaw, change, remove or clean, and replace it. * Using the wrong type of hose. Use a minimum 50 ft. (15.2 m) static-free nylon hose only (wire braid hose is unacceptable). * Paint that is too viscous. Thin the paint.
  • A
    Alejandro WilliamsSep 12, 2025
    Why is the electric motor of my Sherwin-Williams SUPERNOVA 820–002 laboring when starting and blowing fuses?
    • S
      Stacey OrtizSep 12, 2025
      If the electric motor of your Sherwin-Williams Paint Sprayer labors when starting and blows fuses, it could be due to: * Capacitor failure. Replace the capacitor. * Circuit board failure. Replace the circuit board.

Summary

SAFETY WARNINGS

FLUID INJECTION HAZARD

Risks of high-pressure fluid injection, medical advice, and general safety guidelines.

PRESSURE RELIEF PROCEDURE

Step-by-step instructions to safely depressurize the sprayer before maintenance or shutdown.

SPRAY GUN SAFETY FEATURES

Information on essential spray gun safety devices like the safety latch, diffuser, and tip guard.

MOVING PARTS HAZARD

EQUIPMENT MISUSE HAZARD

FIRE OR EXPLOSION HAZARD

HOSE SAFETY

SETUP

Connect Hose and Gun

Instructions for attaching the spray hose and gun to the sprayer.

Fill Packing Nut;Wet Cup

Procedure for filling the packing nut/wet cup with throat seal liquid for pump protection.

Electrical Connection and Grounding

Ensuring correct electrical service, grounding, and extension cord usage.

Set Pressure Control

Initial adjustment of the pressure control knob to its lowest setting.

Pump Flushing

The importance and general procedure for flushing the sprayer pump.

Prepare the Paint

Steps for preparing paint, including removing skin, stirring, and straining for optimal spraying.

Prime the Sprayer

Process for priming the sprayer system and purging air from the hose and gun.

FLUSHING GUIDELINES

When To Flush

Situations and conditions that require flushing the paint sprayer.

How To Flush

Detailed step-by-step instructions for performing the flushing procedure.

SPRAY PATTERN ADJUSTMENT

Cleaning and Clearing the Spray Tip

Methods for cleaning and clearing the spray tip to ensure proper pattern and prevent clogs.

APPLICATION METHODS

Techniques for holding and moving the spray gun for consistent coverage and finish.

SHUTDOWN AND CARE

Daily Checks and Maintenance

Performing daily checks on the packing nut/wet cup for proper operation and longevity.

Flushing and Storage Procedures

Guidelines for flushing the sprayer, short-term storage, and protecting the hose during storage.

DISPLACEMENT PUMP

Removing the Pump

Step-by-step instructions for safely removing the displacement pump assembly.

Installing the Pump

Procedure for correctly installing the displacement pump assembly.

Disassembling the Pump

Instructions for taking apart the displacement pump for inspection or repair.

Assembling the Pump

Steps for reassembling the displacement pump, including packing and gland installation.

CONNECTING ROD AND BEARING

Lubrication and Inspection

Instructions for lubricating and inspecting the connecting rod and bearing for wear or damage.

DRIVE ASSEMBLY

CAPACITOR

ELECTRIC MOTOR

PRESSURE CONTROL AND CIRCUIT BOARD

Circuit Board Removal

Steps for carefully removing the circuit board from the pressure control assembly.

Pressure Control Removal

Instructions for disconnecting and removing the pressure control unit.

Pressure Control Installation

Procedure for installing a new pressure control and circuit board assembly.

PRESSURE CONTROL CALIBRATION

PARTS LIST

PARTS DRAWING

PARTS DRAWING AND LIST

CIRCUIT BOARD APPLICATIONS

Guide to identifying the correct circuit board for different sprayer models and motors.

DANGER LABELS

Information on ordering and applying multilingual DANGER labels for safety compliance.

ACCESSORIES

Listing of available optional accessories, including filter kits and spray guns.

TECHNICAL DATA

WARRANTY AND DISCLAIMERS

Sherwin-Williams SUPERNOVA 820–002 Specifications

General IconGeneral
BrandSherwin-Williams
ModelSUPERNOVA 820–002
CategoryPaint Sprayer
LanguageEnglish

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