If the DC551 leaks or a nozzle head does not appear to be installed correctly, the following checks cover the common conditions described in the user manual.
Condition 1: Water leaks around the interchangeable nozzle head
Possible Cause
The spray head may not be fully rotated or locked into the selected position.
What to Do
Check the nozzle-head position and rotate or reposition it until it reaches the correct locked position and a clear: “click” is heard.
Condition 2: Water leaks between the nozzle head and nozzle body
Possible Cause
The lock icons on the nozzle head and nozzle body were not correctly aligned during installation.
What to Do
- Turn off the water.
- Remove the nozzle head.
- Align the lock icons on the nozzle and nozzle body.
- Insert the nozzle straight into the body.
- Push until a clear click is heard.
- Turn the water back on and check again.
Condition 3: Water still leaks after the nozzle is installed correctly
Possible Cause
The sealing O-ring may be:
- Damaged
- Missing
What to Do
Damaged O-Ring
Replace it with the supplied replacement O-ring.
Missing O-Ring
Install the supplied replacement O-ring to restore the seal.
Condition 4: Water leaks from the lower water-inlet connection
Check the O-ring at the lower quick-connect area.
If the O-ring is damaged or missing:
- Replace the damaged O-ring, or
- Install the supplied replacement O-ring
before reconnecting the water supply.
Frequently Asked Questions
Can the nozzle head be removed?
Yes.
Press and hold the nozzle-release button and pull the nozzle straight outward.
How do I install a replacement nozzle head?
Align the lock icons on the nozzle and nozzle body, then push the nozzle in until you hear a clear:
“click”
Can I use different nozzle heads with the same DC551 body?
Yes, the DC551 is designed as a DIY interchangeable-nozzle system.
However, only use compatible nozzle heads intended for this system.
Are all of the nozzle heads shown in the manual included?
Not necessarily.
The manual specifically states that the actual package contents should be used as the reference.
Other nozzle types shown in the instructions may be for demonstration only and may be available separately.
What is the maximum working pressure?
116 PSI
Do not operate the DC551 above this pressure.
What type of water can I use?
Use clean water only.
Can I use pesticides with the DC551?
No.
Can I use car-wash foaming agents?
No.
Can I use other chemicals?
No.
The manual warns that pesticides, car-wash foaming agents, and other chemicals may cause corrosion or product damage.
Can the DC551 be used with hot water?
No.
The manual advises against hot-water applications.
Is the DC551 suitable for commercial or high-pressure use?
No.
It is intended for general outdoor use at 116 PSI or less.
Can I drink water from a garden hose connected to the DC551?
No.
The manual warns that water from a garden hose may become contaminated and should not be consumed.
Care & Storage
Check the O-Rings
If the nozzle is removed or replaced frequently, periodically check that the sealing O-rings:
- Are present
- Are correctly seated
- Are not visibly damaged
Keep the Locking Surfaces Clean
Before changing nozzle heads, remove visible dirt or debris from the locking area so that the nozzle can seat completely.
The manual does not specify a chemical-cleaning procedure, so avoid adding detergents or chemicals to the connection.
Freezing or Extremely Hot Weather
During freezing or extremely hot weather:
- Disconnect the nozzle from the hose.
- Remove it from the water source.
- Store it indoors.
This helps reduce temperature-related damage.
Safety
Clean Water Only
Do not use:
- Pesticides
- Car-wash foaming agents
- Other chemicals
Keep Away from Children
The DC551 is not a toy.
Do Not Leave the Product Unattended
Turn off the water after use.
Do Not Direct High-Pressure Water at People, Pets, or Fragile Objects
High-pressure spray can cause injury or property damage.
Do Not Exceed 116 PSI
Use only within the pressure limit stated in the manual.
Warranty
The DC551 manual states that RAINPOINT provides a 5-year limited warranty to the original purchaser against defects in materials or workmanship, subject to the warranty conditions.
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