Caroma QUIET FLOW - User Manual

Installation Instructions
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Using a ruler, measure the distance from the
base of the cistern to the WL mark on the back
of the cistern.
Insert Quietow valve into cistern & secure in
place using nut provided.
IMPORTANT:- It is critical the 31mm minimum
air-separation from the top of the overow to the
critical level mark on the inlet valve is maintained.
Flush the water supply line before connecting to
stop cock & turn mains water on. Check water
level height is correct and that there are no
leaks.
For further water level adjustment, ensure mains water is turned off.
Repeat steps 2-4 until the desired water level is achieved.
Remove clip on
Quietow valve and
twist body to release
from it’s current set
height.
Slide valve body
up/down until the WL
mark on valve body
corresponds to the
height measured in
step 1.
Twist & lock valve
body back into place
before replacing clip.
* This Inlet Valve must be installed in accordance with AS/NZS 3500.1

Summary

Inlet Valve Requirements and Installation

Valve Requirements

Details critical air-separation, overflow, and water level measurements for proper inlet valve installation.

Step 1: Measure Cistern Water Level

Measure distance from cistern base to the water level (WL) mark on the cistern back.

Step 2: Adjust Valve Height

Remove clip, twist valve body to release, and adjust height to match cistern WL mark.

Step 3: Secure Valve Body

Twist and lock valve body into place before replacing the clip.

Step 4: Install Valve

Insert Quietflow valve into cistern and secure using the provided nut.

Step 5: Flush and Test

Flush water supply line, connect to stop cock, turn mains on, and check water level and leaks.

Step 6: Fine-tune Water Level

Turn off mains water and repeat adjustment steps 2-4 for desired water level.

Inlet Valve Service and Repair

Service;Repair Instructions

Step-by-step guide for servicing the inlet valve, including cap assembly and seal maintenance.

Service Requirements

Periodic cleaning of valve seal and inlet strainer is recommended based on water quality.

Troubleshooting Guide

Guidance for common issues like slow filling, failure to open, or valve not closing.

Spare Parts Information

Details on compatible spare part kits, typically including a cap assembly and seal.

Helplines and Contact

Contact information for customer support in Australia, New Zealand, and international inquiries.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The Quietflow Inlet Valve is a crucial component designed for installation in cisterns to manage water intake and maintain appropriate water levels. This device is engineered to ensure efficient and reliable operation, adhering to specific installation and maintenance guidelines to guarantee optimal performance and compliance with plumbing standards.

Function Description

The primary function of the Quietflow Inlet Valve is to control the flow of water into a cistern, ensuring that it fills to a predetermined level and then stops, preventing overflow. The valve operates based on a float mechanism (not explicitly shown but implied by water level adjustments) that senses the water level. As the water level rises, the float mechanism gradually closes the valve, stopping the water flow once the desired level is reached. When the cistern is flushed, the water level drops, causing the valve to open and refill the cistern.

A critical aspect of its design is the maintenance of a minimum 31mm air-separation from the top of the overflow to the critical level mark on the inlet valve. This air gap is essential for preventing backflow contamination, ensuring that non-potable water from the cistern does not siphon back into the potable water supply. This feature is a key safety and hygiene requirement, complying with plumbing standards such as AS/NZS 3500.1.

The valve body includes a "Water level / WL Mark" that, in conjunction with a corresponding mark on the cistern, allows for precise adjustment of the water level. This adjustability ensures that the valve can be configured to suit various cistern designs and user preferences, while still maintaining the necessary air gap and preventing overflow. The overflow tube is an integral part of the system, providing a fail-safe mechanism to direct excess water safely away in case of valve malfunction or overfilling.

Usage Features

The Quietflow Inlet Valve is designed for straightforward installation and adjustment, making it accessible for both professional plumbers and experienced DIY enthusiasts.

• Installation: The installation process involves inserting the valve into the cistern and securing it with a provided nut. Before connecting the water supply, it is recommended to flush the supply line to clear any debris, which helps prevent blockages in the valve.
• Water Level Adjustment: A key usage feature is the ability to adjust the water level within the cistern. This is achieved by manipulating the valve body's height. Users first measure the desired water level from the base of the cistern to the WL mark. Then, by removing a clip, twisting the valve body, and sliding it up or down, the WL mark on the valve body can be aligned with the measured height. Once the desired height is set, the valve body is twisted and locked back into place, and the clip is re-attached. This process allows for fine-tuning the water level to optimize flush performance and water conservation. For further adjustments, the mains water supply should be turned off, and the adjustment steps repeated until the desired water level is achieved.
• Compatibility: The valve is compatible with all bottom inlet cisterns where the required air-separation can be achieved, making it a versatile solution for a wide range of toilet systems.

Maintenance Features

Regular maintenance of the Quietflow Inlet Valve is crucial for its longevity and efficient operation. The design facilitates easy access to key components for cleaning and replacement.

• Periodic Cleaning: The valve seal and inlet strainer may require periodic cleaning, especially in areas with varying water quality. This is a vital maintenance step to prevent blockages and ensure smooth operation.
• Disassembly for Cleaning: The service instructions detail a clear process for disassembling the valve for cleaning. This involves turning off the mains water, disconnecting the stopcock, and then rotating and pulling the cap assembly to remove it. The seal can then be removed from the cap assembly.
• Cleaning Components: Both the seal and the tail strainer (located at the base of the valve) can be washed to remove any dirt or debris. The seal should also be inspected for damage during this process.
• Reassembly: After cleaning, the components are reassembled in reverse order: the seal is placed back onto the cap assembly, the cap assembly is pushed and rotated back onto the valve body, and the tail strainer is carefully replaced into the valve tail.
• Flushing Supply Line: Before reconnecting the stopcock and turning the mains water back on, it is recommended to flush the water supply line again to ensure no debris enters the valve during reassembly.
• Troubleshooting: The manual provides a troubleshooting guide for common issues. If the valve fills slowly or fails to open, users are advised to ensure the tap is open and/or clean the tail strainer. If the valve fails to close, cleaning and inspecting the seal, and potentially replacing the cap assembly and seal, are recommended steps. For any other issues, consulting a plumber or Caroma After Sales Service is advised.
• Spare Parts: A compatible spare part kit (687 040) is available, containing a cap assembly and a seal, allowing for easy replacement of worn or damaged components without needing to replace the entire valve. This promotes cost-effective maintenance and extends the life of the device.

In summary, the Quietflow Inlet Valve is a well-designed, user-friendly, and maintainable device that ensures reliable water level control in cisterns while adhering to critical safety and hygiene standards. Its adjustable features and clear maintenance guidelines make it a practical choice for modern plumbing systems.

Caroma QUIET FLOW Specifications