Tender Specification for Supply, Erection, Testing and ... - IDCO

REFRIGERANT CIRCUIT:
A multiple orifice control system consisting of an expansion valve and a fixed orifice, maintains
refrigerant flow.
MAIN CONTROL PANEL:
Factory mounted main control panel is to provided with all starters, phase indicating lights, voltmeter
pressure cutouts, safety switches, pre wired and factory tested etc. should be weather protected with
IP- 55 protection.
SELECTION OF WATER CHILLING UNIT:
The Water chilling unit should be selected for the duty as specified in schedule of equipment.
INSTALLATION:
The chilling machine shall be installed over a cement concrete platform on flooring and shall be
adequately isolated as per manufacturers recommendations against transmission of vibration to the
building structure. For open type units, special attention shall be paid to the alignment of the drive and
driven shaft, final alignment shall be checked at the site
in the presence of the contractor sing dial indicator.
PAINTING:
The Indigenous Air-cooled water Chilling machine shall be finished with durable enamel paint. The
shop coats of paint that have become marred during shipment or erection, shall be cleared of win
mineral spirit, wire bushed and spot primed over the effected areas, than be coated with enamel
paint.
PERFORMANCE RATING:
The unit shall be selected for the lowest operating noise level. Capacity ratings, and power
consumption with operating points clearly indicated, shall be submitted and verified at the time of
testing and commissioning of the installation. The architects / consultant / clients representatives shall
witness the capacity tests if need be at manufacturers works and all costs towards to and for air fare,
lodging and boarding expenses shall be borne by the client.
Power consumption shall be computed from measurements of incoming voltage and input current and
energy measure meters.
TESTING:
a) Unit capacity in tons refrigeration, shall be computed from the temperature reading and water flow
measurements. Flow measurements shall be through flow meters. Computed results shall tally
with the specified capacities as furnished with tender.
b) All instruments, services needed for the test required for the computation of capacities and power
consumption shall be provided by the contractors themselves. All instruments shall be calibrated
and contracts shall produce calibration certificate in support.
c) Tenderer shall furnish detailed certificates of tests carried out on test bed in the factory.
d) The total frame of air-cooled chillers should be well protected by epoxy or equivalent coating to
take care of coastal installation and high sulphur contents in atmosphere to avoid corrosion.