(April, 2013)
DRH Series GEN1 Ultrasonic Humidifi er Installation, Operation & Maintenance Manual
4-2
4.2 Maintenance Items and Necessary Tools
Replacing transducer.
After about 10,000 to 15,000
hours of operation.
Sect. 4.4.3
Replacing nebulizer
print plate.
If damaged or upon failure.
Replacing water supply
solenoid valve.
Replacing fl oat switches.
Replacing printed circuit
board.
Sect. 4.4.6
Adjustable wrenches (2)
Phillips screwdriver
5.5 mm Nut driver
Soft cleaning cloth
Small brush
Diagonal wire cutter
Item Cycle
Description
Necessary
Tools
Phillips screwdriver
Air fi lter cleaning.
About once a week depending
on the extent of contamination.
The interval should be short-
ened if environmental condi-
tions are particularly dusty.
Sect. 4.2.1
Check water tank
interior, mist blow tubes
and electrical parts.
Once a month or as required
if environment is dusty or
water supply quality is poor.
Sect. 4.2.3
Routine Maintenance
Replacing Parts
If damaged or upon failure.
Also recommended when
replacing transducer.
Replacing temperature
sensor.
If damaged or upon failure.
Sect. 4.4.4
Sect. 4.4.5
Clean/replace water
supply fi lter/strainer
element.
Once every 3 months or as
required if water supply qual-
ity is poor.
Sect. 4.2.2