Water Chemistry

The following water quality must be maintained at all times to prevent premature corrosion. It is recommended that your water balance is checked and balanced by a pool professional. Your warranty does not cover for damaged caused by poor water chemistry and neglect.

pH:	7.2 -7.6
Total Alkalinity:	80 - 120ppm
Total hardness:	Less thab 500ppm
Total Dissolved solids:	1500ppm or lower
Saline Water max:	concentration 6%
Chlorine Free Cl:	5ppm Max. Continuous
Cyanuric level	50ppm Max.
Super chlorination Max:	30ppm for 24hrs
Bromine:	8ppm
Baquacil:	25-50ppm

Surface skimmers (above or inground)

Do not use slow dissolving chemical tablets such as chlorine in the skimmer basket(s). This can lead to high acidic/corrosive pool water affecting the heat exchanger and resulting in a replacement of the whole unit. Therefore, we recommend that diluted chemicals are fed directly to the pool water or use an automatic dosing device.

WINTERISING / START-UP procedure - ALL MODELS

Winterising Procedure

1.Switch off electric supply to heat pump.

2.Turn off circulation pump.

3.Drain water from heat pump by disconnecting pipework to and from heat pump. Ensure Heat Pump is completely drained.

4.Flush through water circuit in heat pump using clean tap water i.e. a hose into inlet connection - run for 10 minutes minimum.

5.Drain completely - fit plastic bags secured by elastic bands over water connections.

6.If desired, you can protect from the heater by covering with VENTILATED cover through the winter season. Do not use plastic sheet as condensation can occur within unit.

NOTE. If the pool has a ‘frost-thermostat’ installed to prevent the pool system from being drained in the winter months, it is recommended that a plumbing by-pass is installed to prevent unnecessary water flow through the heater unit.

Start-Up Procedure

1.Remove ventilated cover protection is fitted.

2.Re-connect all plumbing connections to heat pump, filtration etc.

3.Turn on circulation pump and check for leaks.

4.Use control panel to set functions 1-7.

5.Check daily to ensure pool water has the correct pH and the correct chemical balance is being maintained.

AS-H40Y, AS-H60Y, AS-H50Y specifications

The Sigma AS-H50Y, AS-H40Y, and AS-H60Y are high-performance amplifiers designed for audio professionals and enthusiasts who demand exceptional sound quality and reliability. Each model brings unique features and technologies to the table, catering to a variety of audio applications ranging from live sound reinforcement to studio monitoring.

The AS-H50Y is a compact yet powerful amplifier that delivers a robust 250 watts of continuous power per channel, making it ideal for smaller venues or portable sound systems. Its lightweight design enhances portability, while advanced thermal management ensures optimal performance even during extended use. The AS-H50Y incorporates a Class D amplifier architecture, providing high efficiency and low distortion. Its built-in limiters protect both the amplifier and connected speakers from damage, guaranteeing a long lifespan and reliable operation.

Moving to the AS-H40Y, this model is engineered for incredible versatility, offering an impressive power rating of 400 watts per channel. One of its standout features is the integrated digital signal processing (DSP), which allows users to fine-tune audio output to their specific needs. The DSP functionality includes multi-band EQ, time alignment, and various presets tailored for different environments. Additionally, the AS-H40Y boasts multiple input and output options, making it compatible with a wide range of audio sources, from microphones to instruments.

The AS-H60Y takes things up a notch with an outstanding 600 watts per channel output, making it suitable for larger venues and professional applications. This amplifier also incorporates advanced networking capabilities, allowing for remote control and monitoring via a dedicated app. This feature enables users to adjust settings on the fly, ensuring optimal sound quality during performances. The AS-H60Y uses advanced heat dissipation technology, ensuring that the unit remains cool and operates efficiently even under high load conditions.

All three models share critical characteristics, including rugged construction designed for reliability, high-quality components for superior audio fidelity, and flexible connectivity options. With their respective power outputs and features, the Sigma AS-H50Y, AS-H40Y, and AS-H60Y cater to a wide range of audio needs, making them excellent choices for those seeking outstanding performance in various settings. Whether for live sound, installations, or studio work, these amplifiers provide the power and flexibility essential for modern audio challenges.