Nortek VENMARCES VHC-36 - Appendix O: VHC-36, -42 and -50 Maintenance Summary Chart; Table O1: VHC-36, -42 and -50 Maintenance Summary Chart

Appendix O: VHC-36, -42 and -50 Maintenance Summary Chart
Table O1: VHC-36, -42 and -50 Maintenance Summary Chart
Item No. Description Note Monthly Quarterly
Semi-
annually
Annually
General
1 Inspect the general condition of the unit. x
2 Remove any dirt or debris. x
3
Check interior liners and partition for dirt buildup and
clean.
x
4 Check for unusual noise or vibration.
5 Lubricate the door latches. x
Air filters
6 Replace prefilter. 1
7 Replace final filters. x
8 Inspect holding frames/sliding track. x
Forward
curved fans
9 Check bearing, fan and sheave set screw tightness. 2 x
10 Check fan and motor mounting bolt tightness. 3 x
11 Check sheave and fan belt condition and alignment. x
12 Adjust belt tension. 4 x
13 Lubricate fan bearings. 5
14 Lubricate motor base adjusting screws. x
15 Check condition of flexible connection. x
16 Check for dirt buildup and clean. x
17 Check motor voltage and current. x
Plenum
supply fan
18
Check fan and motor mounting bolts and pedestal bolts
for tightness.
3 x
19
Check motor bearings for possible binding noise or
overheating.
x
20
Check fan wheels for dirt and grease accumulation.
Clean as necessary. Do not use any caustic cleaning
solutions.
x
21
Examine fan housings and motor pedestal for corrosion.
Clean and touch up with paint as necessary.
x
22 Check motor voltage and current to each motor. x
Enthalpy
wheel
23 Verify wheel is rotating freely. x
24
Check motor mounting bolts and drive sheave set screw
for tightness.
2 x
25 Check condition and tension of drive belt. 6 x
26 Check condition of brush seals. x
27 Check for dirt buildup and clean. x
28 Check condition of media, rim and spokes. x
Dampers
29
Check damper actuator mounting and linkage fasteners
for tightness.
x
30 Inspect for dirt or leakage. 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.
VCES-VHC-IOM-1F – VHC-36, -42 & -50
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