Troubleshooting; Maintenance; Maintenance Schedule - Munters GFn Mode D'emploi Et D'entretien

6.4 Troubleshooting

Problem
• No power
• Incorrect voltage
• Too low room thermostat setting
• Thermostat
The air heater
does not start
• Previous safety thermostat trip
• Previous burner lock-out
• No fuel
• Incorrect fuel
The burner starts,
• Blocked fuel line
the flame does not
• Blocked nozzle
ignite, the unit
• Faulty ignition system
locks out
• Faulty burner
• Dirty or faulty flame sensor
The burner starts,
• Faulty burner
the flame ignites,
• Incorrect burner settings
but the unit locks
• Insufficient draught
out immediately
• Dirty or incorrect fuel
later
• Dirty nozzle/incorrect nozzle size
• Dirty or incorrect fuel
• Dirty combustion chamber/heat
The burner starts
but combustion is
• Dirty nozzle
not good
• Incorrect burner settings
Tab. 1

7. MAINTENANCE

WARNING Only qualified personnel is allowed
to perform the operations described in this chapter.
Operator or staff training is necessary before
performing any cleaning or maintenance operation
to the air heater:
• read and understand the instructions contained in
all the manuals delivered with the air heater;
• get familiarized with the proper use of all controls
and components of the air heater;
• contact Munters in case training is necessary;
• inform the maintenance staff and operators on the
cleaning and maintenance operations contained
in this chapter.

7.1 Maintenance schedule

The prerequisites for proper maintenance operation
of the air heater are:
Cause
cap/connector
inserted
exchanger
13
• Check power supply system
• Check voltage
• Set higher temperature
• Insert thermostat cap/connector
not
• Detect and remove the cause of overheating
then reset
• Detect and remove the cause of lock-out, then
reset
• Fill the tank
• Check/replace
• Clean filter/hoses/pump
• Clean nozzle
• Clean electrode/replace cables
• Check/replace
• Clean/replace
• Check/replace
• Check/adjust
• Check installation
• Use correct fuel
• Clean/replace
• Use correct fuel
• Clean
• Clean/replace
• Check/adjust
• air heater has been stopped (see Chapter 6.2)
and disconnected from electrical line and fuel line;
• air heater is sufficiently cool if previously was
functioning;
• fan/motor assembly is completely still;
• suspended equipment or ladders to reach the air
heater; the equipment must comply with laws in
force;
• protective equipment (gloves, glasses, clothes).
WARNING
Tab. 2, described in the following paragraphs,
ensure the air heater is functioning properly. Do not
use an air heater in need of repair. For additional
information contact the manufacturer.
The manufacturer cannot accept any liability for
damage resulting thereof:
• have the air heater cleaned at least once a year
by qualified maintenance personnel;
| © Munters AB, 2019
Solution
After performing any operation of