WAKL5N0802A
Edition: 07.02.2022
Page: 5/18
1. Technical data
1.1. Air conditioning units
2nd Gen.
3rd Gen.
Type
UL 500 EM
UL 700 EM
UL 500 EM
UL 700 EM
Refrigerant
R 134a
GWP
1.430
Refrigerant without Frontbox approx.
kg
7,0
8,0
2,8
3,5
Refrigerant quantity with Frontbox
approx.
kg
7,5
8,5
3,3
4,0
Operating voltage
Volt
DC
26
26 V
DC
Max. current draw
A
63
90
60
90
Current draw at regular mode
A
14
20
14
20
400 V
AC
Max. operating current
A
15
24
15
24
Starting current compressor
A
100
120
100
120
Cooling capacity
W
24.000
33.000
24.000
33.000
Heating capacity
W
30.000
38.000
30.000
38.000
Evaporator
– air volume
m
3
/h
4.720
7.080
4.720
7.080
Weight
kg
171
196
162
192
1.2. Pressure Switches
Low pressure switch
BAR
0,3 bar (± 0,2) off
2,1 bar (± 0,3) on
High pressure switch
BAR
25,5 bar (± 1,0) off
18 bar (± 0,7) on
2. Maintenance plan
Pos. Maintenance and repair schedule
3 Cooling cycle and components
A B C D
3.1 Refrigerant level check at the inspection glass of the roof installation
X
3.2 Air tightness check with leakage detector
X
3.3 Condenser coil cleaning
X
3.4 Refrigerant receiver check for corrosion
X
3.5 Replacement of filter dryer - functional test of low pressure switch
X
3.6 Function check of high pressure switch
X
3.7 Check of screw connections on compressor for tightness
X
3.8 Fresh-/ recirculation air filter check for contamination, if necessary replace (X) X
3.9 Oil level check of the compressor at the oil sight glass
X
3.10 Compressor oil exchange
(X) X
4 Electrical installations
A B C D
4.1 Function check of the condenser fans
X
4.2 Function check of evaporator blowers
X
4.3 Visual check of safety fuses
X
4.4 Plug connection check for tightness
X
4.5 Visual check of electrical cables for abrasion
X
4.6 Check the control
X
The maintenance periods are as follows:
Maintenance type
A
:
Monthly maintenance works
Maintenance type
C
:
Annual
Maintenance type
B
:
Half-yearly
Maintenance type
D
:
Every 3 years
