MAINTENANCE AND OPERATING MANUAL
Safety
HAS T 070÷140
34
ENGLISH
EN
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited.
measuring devices must be checked regularly. Such devices must be replaced when the permitted tolerance values are
exceeded.
Coloured tracers can be used in service-maintenance operations.
Inspect all refrigerant circuit joints including connectors, flanges, and more generally all critical points (open joints) in order
to prevent possible leakage of refrigerant gas.
Do not weld or perform work that generates heat close to a system that contains oil or inflammable liquids. Systems that
may contain oil or inflammable liquids must be completely drained and cleaned, for example with steam, before performing
any such operations.
To prevent an increase in working temperature and pressure values clean the heat exchange surfaces (e.g. the fins of
condensers) regularly. For all units establish a suitable time interval for cleaning procedures.
DO NOT damage the pressure relief valves and other pressure limiting devices.
Do not clog these devices with paint, oil, or accumulated dirt.
Use exclusively original spare parts.
Never use an open flame as a light source to inspect parts of the unit.
When a repair has been completed make sure that no tools or detached parts are left in the unit.
Check the direction of rotation of the motors when starting the unit for the first time and after work has been performed
on the electrical connections or on the power supply sectioning device.
All the protections must be refitted following maintenance or repair work.
Do not use inflammable liquids to clean components while the unit is running.
If non-inflammable hydrocarbons containing chloride are used all the relevant safety precautions must be adopted to protect
against the toxic fumes that may be given off.
Before removing any panels or dismantling any parts of the unit perform the following steps:
- Isolate the unit from the electrical power supply by disconnecting the supply upstream of the power feeding line.
- Lock out the disconnect switch on the “OFF” position by fitting a padlock.
- Place a sign on the disconnect switch handle stating “WORK IN PROGRESS - DO NOT CONNECT POWER”.
- Do not set the electrical power switch to ON or attempt to start the unit if the warning sign is displayed.
2.3 Refrigerants
See the refrigerants safety datasheet in the manual appendix.
These units may be charged exclusively with R410A.
Do not replace the refrigerant with a different type or mix two different types of refrigerant.
To clean a refrigerant circuit that has been seriously contaminated, e.g. following a compressor burn-out, the relative work
must be carried out by an expert refrigeration engineer.
The use and storage of cylinders containing refrigerants must be in compliance with the prescriptions of the manufacturers of
the cylinders and in compliance with the applicable safety laws and prescriptions in force in the place of installation.
In order to eliminate the risk of refrigerant gas leaks, the circuit is checked using an electronic sniffer set to 5 g / year.
To Next Page
Loading...