Munters HCUw, Эксплуатация и техническое обслуживание

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5 Maintenance
Note: This unit contains R410a refrigerant. Use only R410a refrigerant and POE oil.
This section includes some suggested maintenance requirements for this unit. This information is offered
as a guide, but your system may require more frequent maintenance. For example, if your unit is used in
a very dusty atmosphere, you should replace the air filters more often. Use these suggested schedules
as a starting point, and modify them to suit your own installation.
Munters dehumidifiers are designed to be very rugged and reliable. In fact, they have the lightest
maintenance requirements in the industry. However, this does not mean you can skip the maintenance
completely. Poor maintenance can result in poor performance, increased downtime and additional
operating costs.
Munters strongly recommends that you follow a comprehensive maintenance program. This program
should include not only the dehumidifier, but any support systems involved in the dehumidification
system.
5.1 QUICK MAINTENANCE CHECK
As the unit operates, make routine checks of these two basic functions:
• The supply air fan should be running whenever the controller is calling for “FAN” to be on.
• Turn on power to the unit and allow it to operate normally for about 30 minutes. (This will allow
time for the temperatures inside the unit to stabilize.) You should run this test at a time of day
when the HCU needs to run dehumidification. Using a simple probe thermometer, check the
temperatures leaving (LAT) the cooling coil, desiccant wheel, and condenser coil. The cooling
coil LAT should be 15 to 30 degrees F cooler than ambient. The wheel LAT should be 10 to 15
degrees F warmer than the coil LAT. The condenser coil LAT should be at least 112 degrees F.
5.2 SUGGESTED MAINTENANCE SCHEDULE
The following table lists the recommended maintenance schedule for this unit. For detailed instructions
on each procedure, see the sections that follow.
EVERY 30 DAYS
Check this Location
Inspect the ductwork. Supply air outlet (See Sect. 5.3)
Replace the air filters. As labeled (See Sect. 5.4)
ANNUALLY
Check this Location
Inspect the seals around the Both faces of the HoneyCombe
®
wheel
HoneyCombe
®
wheel.
(See Sect. 5.5)
Check the fans. Supply fan (See Sect. 5.6)
Reactivation fan
Condenser fan
Inspect the wheel drive motor. Cassette access panel or door
(See Sect. 5.7)
Inspect the roller wheels. Cassette access panel or door (See Sect. 5.8)
Inspect the electronic controls. Control panel (See Sect. 5.9)