The user must ensure that the sample tubing is not bent, blocked or kinked
in such a way that the gas cannot be drawn through the unit. When the
sample line is blocked the pump and motor unit will begin to labour
generating increased noise.
5.3
Printer Roll Insertion
The printer cover (12 in Fig 3) can be flicked up by unfastening the printer
cover catch (14 in Fig 3). The paper roll should be placed in the
compartment so that the free end is drawn from below the roll and feeds
towards the front of the unit. A short length of the paper roll (4-8cm)
should be unwound and fed through the printer mechanism by press Key 2
- Paper Feed until the paper is visible. The paper should be fed through
the paper slot (13 in Fig 3) in the printer cover and the cover should then
be shut. Excess paper should be torn off by pulling against the sharp edge
of the paper slot. The printer should now be fully operational.
5.4
Filter Unit
The internal structure of the filter unit (Fig 4) consists of two separate
filter elements (e and f) that are attached at one end to the
TEMPEST 50
unit (g) and separated at the bottom by the filter inner disc (d) which
allows water to pass through the assembly to the receiving filter bowl (b).
A gasket (c) is fitted to the filter inner disc to form a seal between the filter
inner disc and the filter bowl.
5.4.1
Assembly - to assemble the filter unit for the initial set up or to
replace damaged filter elements the
TEMPEST 50
unit should be turned
upside down after ensuring that the filter bowl has been drained completed
(Section 5.4.3). The filter bowl (b) should be unscrewed clockwise and
removed from the unit. The coalescing and particulate filter elements (e &
f respectively) should be aligned and pushed down onto the
TEMPEST 50
unit (g). The gasket (c) should be pushed onto the filter inner disc (d)
which should subsequently be pushed down onto the 2 filter elements (e &
f). Ensuring that the ‘O’ ring (h) is present in the base of the
TEMPEST
50
(g) align the filter elements and fittings with the filter bowl (b) and
press against the ‘O’ ring and gasket / filter inner disc. Screw anti-
clockwise until the bowl locks into place and is held securely.
This action simultaneously exerts a compressive force upon the gasket,
pushing the filter inner disc upwards and producing a tight fit between
the filter elements, the inner disc and the filter bowl.
