Maintenance; Checking Gas Flow - Micromeritics FlowPrep 060 Operator's Manual

Maintenance

Maintenance

Checking Gas Flow

The gas flow through the flexible tubing and gas delivery tubes should be checked once a
week to ensure that there are no obstructions or leaks in the tubing. To check the flow, place
the flow control valve in the open position. Insert the gas delivery tube in a beaker of water.
Bubbles should appear. Approximately the same number of bubbles should appear in the bea-
ker of water when moved to each station.
If bubbles do not appear for a particular station, detach the suspect gas delivery tube (refer to
Attaching the Gas Delivery Tubes,
tubing in the beaker of water. If bubbles appear, the problem is a clogged gas delivery tube. If
the tube cannot be unclogged, replace it with a new one. If bubbles do not appear, check the
valve inlet tubing (see
Gas delivery tubes and flexible tubing may be ordered in sets of six from
Micromeritics. Refer to Ordering Information, page
If gas flow is not present in other stations, refer to the following table.
Gas pressure is set too low.
Gas bottle is empty.
Valve inlet tubing is
disconnected.
Flow control valve is
damaged.
4-4
page 2-6) from the flexible tubing and insert the flexible
Connecting or Replacing Valve Inlet Tubing,
Table 4-2. Gas Flow Problems
Why
Increase the flow rate by turning the regulator pressure
control knob clockwise until the correct pressure gauge
reading is shown. (Refer to
page 2-5.)
Replace the gas bottle.
Check valve inlet tube connections, refer to
Replacing Valve Inlet Tubing,
Call the appropriate service personnel.
page 4-7).
5-1
.
What To Do
Table 2-2. Gas Flow Rate,
Connecting or
page 4-7.
FlowPrep 060
May 2010