Lennox FLEXY II Series Installation, Operating And Maintenance page 6

IMPORTANT NOTICE – Safety instructions
All FLEXY II Units are compliant with the PED directive 97-23/CE
The following note must be followed carefully
All work on the unit must be carried out by a qualified and authorised employee.
Non-compliance with the f ollowing instructions may result in injury or serious accidents.
Work on the unit:
 The unit shall be isolated f rom the electrical supply by disconnection and locking using the main isolating switch.
 Workers shall wear the appropriate personal protective equipment (helmet, glov es, glasses, etc.).
Work on the electrical system:
 Work on electric components shall be perf ormed with the power off by employees hav ing v alid electrical qualif ication and
authorisation.
Work on the refrigerating circuit(s):
 Monitoring of the pressures, draining and f illing of the system under pressure shall be carried out using connections provided
f or this purpose and suitable equipment.
 To prev ent the risk of explosion due to spraying of coolant and oil, the relevant circuit shall be drained and at zero
pressure before any disassembly or unbrazing of the ref rigerating parts takes place.
 There is a residual risk of pressure build-up by degassing the oil or by heating the exchangers after the circuit has been
drained. Zero pressure shall be maintained by venting the drain connection to the atmosphere on the low pressure side.
 The brazing shall be carried out by a qualif ied brazier. The brazing shall comply with standard NF EN1044 (minimum 30%
silv er).
Replacing components:

In order to maintain CE marking compliance, replacement of components shall be carried out using spare parts, or using
parts approved by Lennox.

Only the coolant shown on the manuf acturer's nameplate shall be used, to the exclusion of all other products (mix of
coolants, hydrocarbons, etc.).
CAUTION:
In the event of fire, refrigerating circuits can cause an explosion and spray coolant gas and oil.
T – H :
RANSPORT ANDLING
- Nev er lift the unit without f orklift protections
- Remov e the f orklift protection before installation
- An approach ramp must be installed if the unit's installation requirements tell that it's necessary to reach the main switch.
This recommendation is v alid f or installations in general and in particular f or return and curbs. It's also v alid to reach other
parts of the unit: f ilters, refrigerant circuit, etc...
- It's adv ised to fix curbs and roofcurbs to the unit
- Whatev er the supply conf iguration is, respect a minimal duct's length of 2m bef ore any elbow or any duct's section change.
C :
OMMISSIONING
- It must only be carried out by trained ref rigeration engineers.
- Don't forget to open the insulation v alve on the liquid line bef ore starting the unit
F :
ILTERS
- Do the f ilters f ire classification's choice according to local regulations.
F :
ANSTART
- Any adjustment has to be done power stopped.
G :
AS
- Any work on gas module must be carried out by qualified personnel
- A unit with gas module must be installed in accordance with local safety codes and regulations and can only be used in
planed installation conditions for outdoor.
- Bef ore commissioning this type of unit, it's mandatory to ensure that the gas distribution system is compatible with the
adjustment and settings of the unit.
IOM – FLEXY II – 1007 – E Page 4