Brooks Instrument DLI Manual De Instalación Y Funcionamiento página 30

Section 4
Maintenance and Cleaning
Brooks ® DLI Vaporizer System
Table 4-1 General Troubleshooting Information and Courses of Action
Problem
Incomplete vaporization
Heater exchanger will not reach
operating temperature
Cannot achieve adequate liquid flow
Cannot achieve carrier gas flow
Pressure spikes in process vessel
4-2
Possible Cause
Heater exchanger temperature too low
Carrier gas not reaching sonic velocity
Insufficient heater power
Bad band heater
Pressure within the heat exchanger is
too high
Atomizer clogged
Pressure within the heat exchanger is
too high
Incomplete vaporization
Gas bubbles in the liquid feed
Cold spots in the tubing downstream
of the vaporizer
Installation and Operation Manual
X-VAP-DLI-Standard-eng
Part Number: 541B203AAG
Course of Action
Ensure heater is set to the
correct temperature.
Increase carrier gas.
Ensure flow rate is set as
specified in the sizing.
Ensure outlet pressure of the
heat exchanger is at the
correct operating conditions
as specified in the
sizing.
Incorrect orifice size for
operating conditions.
Ensure the proper voltage is
applied to the heater(s).
See product label for heater
voltage.
Replace band heater.
Vessel/Reactor pressure too
high; ensure outlet pressure
of the heat exchanger is at
the correct operating
conditions as specified in the
sizing.
Outlet orifice, if equipped, is
clogged or wrong size.
Clean or replace atomizer.
Vessel/Reactor pressure too
high; Ensure outlet pressure
of the heat exchanger is at
the correct operating
conditions as specified in the
sizing.
Critical orifice in the atomizer
clogged; replace.
See above.
When using a push gas
minimize the gas pressure.
Use a low Henry's Constant
gas.
Relieve the gas pressure on
the source when not in use.
Heat trace all piping/tubing.
May, 2016