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LEX - commercial air cooler (stock range)0 pages
General information & application
Helpman LEX coolers are are commercial heavy duty air
coolers for general application in small to medium size cooling
and freezing rooms. Helpman LEX coolers are available from
stock.
Evaporating temp. +5 to -40°C
Refrigerants all H(C)FC, brine
Capacities (SC2) 1.3 up to 44.8 kW
Air volume 1,030 up to 26,000 m3/h.
Coil
Coil manufactured from Cu ripple fin® tubes ø 1/2” and
Alu-fins. Tube pitch 38 x 38 mm square.
Available fin spacings 4 and 7 mm.
Casing
Durable aluminium casing, white epoxy coated RAL 9003.
Models up to Helpman LEX 12 are fitted with hinged interchangeable
side plates. Bigger models fitted with easy
removable side plates for easy access. Sufficient room for
fitting the expansion valve inside casing. All models fitted with
a splash guard.
Fan motors
Blow-through fans, diameter ø 254 up to 508 mm.
Enclosed design spray-tight fan motors, protection class
IP-55. Motors are equipped with a thermal safety device in
the windings, connected to separate terminals in the box.
Eflo® refrigerant circuiting
With the Eflo® liquid distribution system, the refrigerant
is evaporating through the coil in parallel flow with the
air. Superheating takes place on the air-inlet side (highest
tube temperatures!). With Eflo® , the cooling performance
improves as a result of :
- Even frost formation over the coil.
- Prolongued cooling cycle.
- Reduced defrost cycle.
Certifications
All DX cooler models are “Eurovent Certify All” certified. The
Alfa Laval quality system is in accordance with ISO 9001. All
products are manufactured according to CE and PED rules.
Test
Design pressure 33 bar. Each heat exchanger is leak tested
with dry air and finally supplied with a nitrogen pre-charge.
Options
• Defrost systems
- Electric defrost (E2)
- Hot gas coil in driptray (G1)
• Fan ring heater (FRH)
• Isolating switch (mounted) (ISM)
• Water/glycol execution
• Special fan motors
- 1 or 3 phase motors
- 60 Hz motors
- Increased external pressure
LEX
Commercial air cooler - stock range
LEX
