Safety Precautions; Safety Isolating Switch/Main Switch; Risks; Safety Guards - Swegon GOLD PX Series Operation And Maintenance Instructions

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SAFETY PRECAUTIONS

All staff concerned shall acquaint themselves with these
instructions before beginning any work on the unit.
Any damages to the unit or its components caused by
improper handling or misuse by the purchaser or the fitter
cannot be considered subject to guarantee if these instruc-
tions have not been followed correctly.
Warning
Only an authorised electrician or qualified service
personnel trained by Swegon shall be permitted
to modify the air handling unit in conjunction with
electrical installations or the wiring of external func-
tions.

2.1 Safety Isolating Switch/Main Switch

Size 04/05, 08, 12, 14/20 and 25/30 one-piece GOLD
units with rotary (RX), plate (PX) or coil (CX) heat
exchanger: The safety isolating switch is located externally
on the junction hood.
Size 35/40, 50/60 and 70/80 one-piece GOLD units with
rotary heat exchanger (RX): The safety isolating switch is
externally located on the door of the centre section of the
unit.
Size 35/40 one-piece GOLD units with coil heat exchanger
(CX): The safety isolating switch is located on the left
side of the electric equipment cubicle in the centre sec-
tion of the unit. Size 50/60 and 70/80 air handling units:
The safety isolating switch is located in a plastic enclosure
below the electrical equipment cubicle in the centre sec-
tion of the unit.
Separate supply air and extract air handling units (SD): The
safety isolating switch is located on the inspection side by
the inspection door of the fan section.
The air handling unit shall normally be started and
stopped via the hand-held micro terminal, not via the
safety isolating switch.
Always switch off the safety isolating switch before serv-
icing the unit if not otherwise specified in the pertinent
instructions.
We reserve the right to alter specifications without notice.

2.2 Risks

Warning
Before carrying out any work, make sure that the
power supply to the unit has been isolated.
Risk areas with rotating parts
Moving parts are the fan impeller, drive pulleys of the
rotary heat exchanger, if fitted, and by-pass/shut-off
damper of the plate heat exchanger, if fitted.
The lockable inspection doors serve as protection from
contact with the fans and the heat exchanger. If the fan
outlets aren't connected to any duct, they must be fitted
with a protective screen (wire mesh).
Warning
The inspection doors on the filter/fan sections must
not be opened while the unit is in operation.
Under normal operating conditions, use the stop
button on the hand-held terminal to stop the air
handling unit.
Wait until the fans have stopped rotating before
opening the inspection door.
The air pressure inside the filter/fan section is posi-
tive, which means that the door can fly open.

2.3 Safety Guards

The cover of the electric equipment cubicle serves as a
safety guard in the size 04/05 and 08 one-piece air han-
dling units with rotary heat exchanger (RX), as well as
on all the other variants (PX/CX/SD). On size 12, 14/20,
25/30, 35/40, 50/60 and 70/80 one-piece air handling
units with rotary heat exchanger (RX), the lockable door
over the electrical equipment cubicle serves as a safety
guard.
Only a qualified electrician or trained service technicians
shall be allowed to remove the safety guards.
Warning
The power supply to the unit shall be isolated by
switching off the safety isolating switch before
removing the safety guard.
As long as the air handling unit is operating, the
safety guards must always be mounted, all inspec-
tion doors must be closed, and the junction hood
on the top of the unit must be mounted.

2.4 Glycol

Glycol is used in the GOLD air handling units with
coil heat exchanger. Never pour glycol down a
drain; collect it in a receptacle and leave it at a
recycling centre, petrol station, or the like. Glycol
is highly dangerous to consume and can cause
fatal poisoning or damage the kidneys. Contact a
doctor! Avoid breathing glycol vapour in confined
spaces. If you get glycol in your eyes, flush them
thoroughly with water (for about 5 minutes). If
glycol splashes on your skin, wash with soap and
water.
GB.GOLDSK509.091101
www.swegon.com 7