Carrier Aquasnap 30RQ 160R User Manual

11.5 - Electronic expansion valve (EXV)
The EXV has a stepper motor and a sight glass which can be used
to check the mechanism movement and the presence of the liquid
gasket.
11.6 - Moisture indicator
This is used to check the unit charge and the presence of moisture
in the circuit.
The presence of bubbles in the sight-glass indicates an insu󰀩cient
charge or non-condensables in the system.
The presence of moisture changes the colour of the indicator paper
in the sight-glass (from green to yellow).
11.7 - Filter drier
The role of the lter drier is to keep the circuit clean and moisture
free.
The moisture indicator shows when the lter drier needs to be
changed.
A di󰀨erence in temperature between the lter inlet and outlet shows
that the element is dirty.
11.8 - Water type heat exchanger
The exchanger is a brazed plate heat exchanger with two
refrigerant circuits.
The hydraulic connections of the heat exchanger are Victaulic
connections.
The water heat exchanger is thermally insulated with 19 mm of
foam rubber.
As an option it can be protected against frost by an electric heater
(water exchanger frost protection option).
Any products used for thermal insulation of recipients during
hydraulic connection must be chemically neutral to the surfaces
on which they are applied. All original materials supplied by the
manufacturer comply with this requirement.
NOTE - Monitoring during operation
- Follow local regulations on the monitoring of pressure
equipment
- The user or operator is usually requested to create and
maintain a monitoring and maintenance log.
- In the absence of any regulations, or in addition to the
regulations, follow the guidance in the EN 378 standard.
- Follow the local professional recommendations,
whenever they exist.
- Regularly check for the presence of any impurities (e.g.
sand, grit) in the heat-transfer uids. These impurities
can cause wear and/or pitting corrosion.
- The reports of the periodical checks by the user or the
operator must be included in the monitoring and
maintenance log.
11.9 - Refrigerant
Units operating with R32 (A2L uid).
ATEX zones have been identied on the edge of the unit: Please
refer to chapter "4.6 - Positioning of ATEX zones around the unit".
Please comply with applicable recommendations in the ATEX
zones.
11.10 - High-pressure safety pressostat
The units are equipped with high-pressure safety pressostats with
automatic reset.
These pressure switches are located at the discharge of each
circuit.
11.11 - SmartVu
TM
control
The interface for the SmartVu
TM
control has the following
characteristics:
- It has a 4.3-inch colour screen.
- It is intuitive and user-friendly. Clear and concise information
is presented in the local language (8 languages available).
- The complete menu can be adapted to the various users
(end customer, maintenance personnel, manufacturer
engineers).
- Unit setting and use are secure. Password protection
prevents unauthorised access to advanced parameters.
- No password is required to access the most important
operating parameters.
9 - NOMINAL SYSTEM WATER FLOW RATE CONTROL
36

Carrier Aquasnap 30RQ 160R Specifications

General

Brand	Carrier
Model	Aquasnap 30RQ 160R
Category	Chiller
Language	English