Model 401 & 403 Pass-Thru
Service and Installation Instructions
99-21972-S001 Rev. C
- 73 -
1
B.
LEDs Flickering?
1.
Incorrect driver
2.
Defective LED(s)
3.
Incorrect voltage
C.
Blinking LED
1.
Voltage too high
2.
Wrong LED or driver
3.
Incorrect connector wiring
Safety Precautions
1.
Always turn off power to case, doors and frames before starting work.
2.
Always use a qualified electrician for electrical work.
3.
Always wear safety glasses when working on equipment.
Tips
1.
Never splice door or frame heater wires. Complete replacement
recommended.
2.
When installing gasket and plastics, use a liquid soap.
3.
Keep doors and frames clean.
4.
For binding gasket or plastic parts, use a food grade silicone.
5.
Preventive maintenance is the key to door and frame longevity.
Dew Point Chart
NORMAL TEMPERATURE APPLICATIONS
GLASS TYPE
ROOM TEMP (F)
CASE TEMPERATURE (F)
40
35
30
25
20
THREE
PANE
NHG*
70
74
71
68
65
62
75
72
68
66
63
60
80
68
66
63
60
58
85
66
64
61
58
56
90
65
62
59
57
54
*NHG = Non Heated Glass
% REL. HUMIDITY @ WHICH CONDENSATION FORMS ON GLASS
Calculations make no allowance for air leaks or unusual air flow patterns within
cases and are intended to be used as guidelines only.
