Table O1: VHC-36, -42 and -50 Maintenance Summary Chart
Item No. Description Note Monthly Quarterly
Semi-
annually
Annually
Coils
31 Clean the coils. x
32 Clean the drain pan. x
33 Winterize water coils. x
34 Clean the drain trap. x
35 Check fluid level in drain trap. x
Refrigeration
36 Check for refrigerant leak, look for oil on components. x
37 Verify proper superheat. x
38
Verify refrigeration site glass is full and clear under
operation.
x
39 Inspect condition of condenser fans. x
Electrical
40 Verify all electrical connections; tighten if necessary. x
41 Verify all fuse holders. x
42 Verify all motor overload settings. x
43 Verify system operation in all control modes. x
Notes
1 Check filters weekly after initial start-up until construction dust has been cleared and to gauge required interval.
2 Check set screw at start-up, after 24 hours, monthly for initial three months, then quarterly.
3 Check mounting bolts at start-up, after 24 hours, then quarterly.
4 Check and adjust belt tension at start-up, daily for the first week until they acquire their permanent set, then monthly.
5
See Appendix P for forward curved fan relubrication schedule.
6
Check and adjust belt tension at start-up, then after 24 hours of operation until they acquire their permanent set, then
quarterly.
IMPORTANT
For gas-fired furnace module maintenance, see Appendix J and for electric coil maintenance, see Appendix L.
VCES-VHC-IOM-1F – VHC-36, -42 & -50
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