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Aquarius DIW Heaters Owner’s Manual
Ver. 1.0.0 | 29 Apr 2020 | P. 18
Subject to change without notice
11.2 Recirculation Pump Air Cooling System
Aquarius
®
systems feature a pump air cooling system that optimizes the pump life and
protects the pump motor from over-temperature conditions. The temperature of the pump
motor is continuously monitored and during recirculation should the temperature of the
pump rise above the Factory defined “Pump Motor Temperature Set Point” the pump air
cooling system will initiate. The pump air cooling system will lower or maintain the pump
motor temperature and keep it at a safe operational temperature. The pump air cooling
system will disengage or shut off once the temperature of the motor is below the Factory
defined “Pump Motor Temperature Set Point”. It is recommended that the pump air cooling
system be utilized for optimum performance. Please follow the Pump Air Cooling System
Set Up and Calibration procedures prior to operation of the Recirculation feature.
The Pump Air Cooling System Specifications are listed below.
11.3 Pump Air Cooling System Set Up
It is recommended that the pump air cooling system be utilized for optimum performance.
Please follow the Pump Air Cooling System Set Up and Calibration procedures prior to
operation of the Recirculation feature. Provide a steady air supply source for the pump air
cooling system as detailed below. It is highly recommended that this air supply source be
independent from other system requirements for air.
1) Locate the 1/2” FNPT air supply port for the pump air cooling system at the back of
the Aquarius
®
. Please refer to Facility Diagram in
SECTION II
for its specific location.
2) Install a tube connector to the 1/2” FNPT air supply port. We recommend using a 1/2”
MNPT tube connector with a 3/8” to 1/2” tube size.
3) Connect the appropriate air supply tube to the respective 1/2” MNPT tube connector.
4) Provide 60 psi maximum of steady air supply pressure. Minimum needed should be
equal to or greater than the air regulator setting. See plumbing schematic for setting.
5) Proceed with the Pump Air Cooling System Calibration procedure.
Pump Air Cooling System Specifications
The pump air cooling system equipment MUST only be used within the range of the environmental conditions or
requirements listed below:
Air Supply Port
1/2” FNPT
Required Air Supply Tube (Min. - Max.)
3/8” - 1/2”
Incoming Air Supply Pressure (Max.)
60 psi
Regulated Air Pressure (Min.)
20 psi (See plumbing schematic for factory setting)
Pump Motor Temperature Set Point
55°C
