Specifications

145
NLUO PMC CONTRACTOR
SIGNATURE AND SEAL SIGNATURE AND SEAL SIGNATURE AND SEAL
1.1 Cabinet Construction
• The frame and panels shall be constructed of heavy gauge corrosion resistant sheet steel and have modular construction
with railing and hinged doors. The cabinet shall be powder coated and have a textured finish. The cabinet shall be
provided with double skin side panels with inner panel of minimum thickness of 0.8mm and outer panel of thickness of
1.0mm. Insulation in the side panels should be 19 mm thick glass wool. Front & Back panels should be insulated with
25 mm thick special acoustic mineral wool of CRAUSO Gmbh make.
1.2 Refrigeration Circuit
• The refrigeration system shall be of the direct expansion type and each unit must incorporate hermetic scroll
compressors having independent evaporator coil circuit. Compressors will be with necessary protection devices and
valves complete. The system shall include a manual reset HP control and an auto reset LP switch, filter drier and
charging port. A thermal expansion valve, sight glass and filter drier shall be provided in each circuit. Additionally the
system must be provided with vibration absorbers (MAKE) on the suction & discharge lines of compressor piping to
minimize chances of any leaks due to compressor vibrations during start / stop cycle; this must be in addition to the anti
-vibration mounts provided for the compressors.
1.3 Evaporator Coil (Dx)
• The evaporator coil shall be constructed of rifled bore copper tubes and louvred aluminium fins, with the aluminum/ GI
frame. The A/V type of Coils shall not be provided due to their low Heat Transfer efficiency and difficulty in Servicing.
The coil should be straight/ slant coil configuration and drip tray should be fabricated from heavy gauge steel with
powder coating to avoid corrosion. The drip trays must be double angled for condensate flow and easily removable for