T9901018-1
Page 9 of 26
FLOW
RETURN
access panel
screw
To gain access inside the Dry Cooling Unit
To gain access for connection of the chilled water pipework,
electrical supply, controls wiring and to work on the unit during
commissioning, remove the air inlet grilles and the bottom
access panel.
First remove the plastic end caps at each end of the unit, if
already fitted, by pulling off to the side (see picture).
Then remove each inlet grille in turn with its air filter by
unscrewing the M4 Pozi Head screws at the bottom corner of the
grille. Use a Pozi No.1 screwdriver to access each screw via the
elongated hole at the bottom corners of the grille (see picture).
To remove the bottom access panel unfasten the access panel
securing screws, one at each end (see picture) plus two in the
centre and pull the panel out forwards.
Chilled Water Pipework
(Left hand side of unit)
This should ideally be carried out before connection of any electrical and controls
cables.
The water system must be suitable for chilled water and installed by a qualified
technician.
Install chilled water flow and return pipe connections to the dry
cooling unit using suitable pipework fittings. The flow and return
connections on the cooling unit are Rp1 (1in. BSP Internal). The
chilled water flow is the rear connection, the chilled water return is
the front connection – these are marked. It is important that the flow
and return is connected the right way around or the performance of
the unit will be compromised, see picture opposite.
Ensure that when tightening the pipe connections onto the dry
cooling unit that pipe grips are used to hold the 1 inch steel bush of
each pipe connection to avoid damaging the copper coil inside the
unit, see picture opposite.
