Preliminary Checks Before Startup; Every Six Months - MAXA LWF 13 Benutzer- Und Installationsanleitung

3.2.3 STARTUP INSTRUCTIONS
IMPORTANT!
Machine commissioning or the first start up must be carried out by skilled personnel qualified to work on this type of
! product.
DANGER!
CAUTION!
Before starting up, make sure that the installation and electrical connections have been carried out in accordance with
the instructions in this manual. Also make sure that there are no unauthorised persons in the vicinity of the machine
during these operations.
■ Pipeline system has been vacuumed before initial start the equipment (see fig. 3-11)
1. Remove the casing of the unit by cross screwdriver.
2. Remove the bolts that showed at the figure by slotted screwdriver. Start up the pump to circulate the pipeline water and vacuum air
from the system until there have water flow out from boltholes, and then tighten the bolts the system.
3. Shut down the system that showed at the figure by slotted screwed and replace the side cover panel.
■

Preliminary checks before startup

● Before starting up the unit, make sure that:
- The unit is positioned correctly;
- The flow and return pipes of the water system are correctly connected;
- The pipes are clean and free of air;
- The unit falls correctly towards the drainage outlet and the trap;
- The heat-exchangers are clean;
- The electrical connections are correct;
- The screws holding the cables are well tightened;
- The supply voltage is as required;
- The power consumption of the blower is correct and does not exceed the maximum permitted.
3.2.4 MAINTENANCE
DANGER!
- Maintenance work must only be carried out by qualified technicians authorised to work on air-conditioning and
!
refrigeration systems. Use suitable work gloves.
- Do not introduce pointed objects through the air intake grilles.
- Always disconnect the unit from the mains power supply at the main isolator switch before carrying out maintenance
CAUTION!
work or checks.Make sure that no one accidentally supplies power to the machine, lock the main switch in the Off
position.
■ Scheduled maintenance
● Once a month
Check the state of cleanliness of the air filters.
The air filters are made of fibre and are washable in water.The state of cleanliness of the filters must be checked regularly at the start of
the operating season and on a monthly basis.
●

Every six months

Check the state of cleanliness of the heat exchanger and the condensation drain-tube. With the unit switched off, remove the casing of
the machine and check the state of the heat-exchanger and the condensation drainpipe. If necessary:
1. Remove any foreign bodies from the finned surface, which may obstruct airflow;
2. Clean off the dust with a jet of compressed air; wash and brush, gently, with water;
3. Dry with a jet of compressed air;
4. Check that there are no obstructions in the condensation drain tube which could prevent the normal flow of water.
● Check for the presence of air in the water system
1. Remove the casing of the machine (on units of version I );
2. Start the system and run for a few minutes;
3. Stop the system;
4. Slacken the bleed screw on the inlet manifold and bleed the air;
5. Repeat the operation several times until no more air comes out of the system.
47
fig. 3-11