Casella-cel AFC123 Manual do Utilizador descarregar pdf (Página 10)

Casella USA

17 Old Nashua Road #15

Amherst, NH 03031

Web www.casellausa.com

TF (800) 366-2966

AFC123 Personal Sampler. Page 10

Handbook No. HB3182-02 Issue2/JULY 1994

5. Apply a small amount of adhesive (Evostick or plastic cement - not super

glue) to the hole in the face of the connecting rod upper disc. Push the

components together ensuring that the diaphragm rubber strays central and

is not distorted. It should finally be gripped tightly at the radial edge of the

diaphragm disc and connecting rod upper disc.

6. The bearing (BRE35) is a press fit on to the eccentric and should be

replaced with a new bearing taken directly from its sealed package.

7. Refit the diaphragm/connecting rod assembly and locate on to the motor

mounting ensuring that the outer sealing rim of the diaphragm fits in its

groove. Ensure that the shouldered face of the connecting rod bearing

adaptor is adjacent to the motor mounting (Fig. 1).

Refit valve chest/diaphragm clamp plate assembly and tighten securing

screws to just hold the diaphragm in position. Refit motor and clamp in

position. Refit motor and clamp in position. Fit eccentric and bearing on to

motor shaft and push bearing into the connecting rod housing against the

shoulder and tighten screw (SG502).

8. Connect the pump to the damper and run at low speed and while it is

running tighten the valve chest/diaphragm assembly to the motor mounting.

This allows the diaphragm to adopt its natural position and avoid any

twisting forces.

Operational Check.

The following equipment is required: flowmeter, U tube, water manometer

with moisture trap, restictor valve and variable d.c. power supply giving

voltage and current readout. Connect the pump to the damper and the

damper and the damper inlet by means of a water manometer and to a

restrictor valve through to the sampling head and flowmeter. Float type

flowmeter (CM353) and stand (04-100890B) or bubble meter Casella 5000.

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Casella-cel AFC123 Manual do Utilizador Página 10