Start-up, Pre start-up check, Pre.start-up.check – Mammoth V-Cube User Manual
Page 14: Start-up pre.start-up.check
Start-up
Pre.Start-up.Check
Before requesting start-up, check that the installation is
complete and unit is ready. Complete the pre start-up
below (if items are applicable) and the checklist in
for each unit. For torque values on set screws, belt
tension, etc. check under Operation and Maintenance.
1. Check the electrical disconnect is in 1. the ‘Off’ posi-
tion.
2. Check the split section joints are properly installed on
multi-section units.
3. Check that all holes that have been made by the
Installing Contractor after receiving the unit in the
casing, partitions or floor have been well sealed to
prevent air and/or water infiltration.
4. Check the unit for obstructive packaging, objects
near or in fans, dampers, etc.
5. Remove all retaining bolts on fan bases.
a. Check that the fan impellers are rotating freely.
b. Check fan impeller and drive set screws. Tighten
if required.
c. Check the fan bearing set screws or locking col-
lars. Tighten if required.
d. Check fan belt alignment and tension.
6. Check that the air filters are installed and clean.
Replace if necessary. See
downstream high efficiency HEPA filter installation (if
supplied).
a. Check all face-mounted filters are attached with
four clips each.
b. Check each sliding filter has a retainer at the end
track and well attached blank-offs.
c. Check that the filter pressure differential gauges,
switches or sensors are free of dirt and set at a
value satisfactory to the end user to trigger a fil-
ter change.
7. Check coils if fins have been damaged in shipping,
installation or building construction and are clean.
Straighten fins with fin comb and clean coil if re-
quired.
a. Check all pipe connections are tight and that no
damage has occurred during shipping or instal-
lation.
b. Check that the piping to the coils and WCC have
been completed, piping lines have been flushed,
filled, vented and tested at 1.25 times the oper-
ating pressure.
c. Refer to
and check that it is complete.
8. Scroll compressor RIS vibration isolator bolts are fac-
tory tightened to the correct torque setting for op-
eration and do not require field adjustment.
a. Check that refrigerant components and piping
are in good condition and have no damage or
leaks from shipping or installation.
b. Check that the clearance around the water
cooled condenser (WCC) is in accordance with
minimum recommended clearances.
9. Check motorized damper control arms, control rods
and shafts for tightness.
a. Check that non motorized dampers rotate freely.
10. Check that ductwork is connected, complete and
free of obstructions.
11. Check that condensate drain connections have been
trapped, installed correctly and filled.
12. Check that all shipped loose or field supplied compo-
nents have been correctly installed and wired.
13. Check that the wiring diagram has been marked up
accordingly and left with the unit.
14. Check that all power supplies and control wiring
have been inspected and approved by the Local Au-
thorities having jurisdiction.
15. Check all factory and field wiring connections for
tightness. Tighten if necessary.
16. Check that all fuses are properly installed in holders.
17. Check the voltage at the disconnect switch against
the nameplate and against phase-to-phase readings
on three-phase. If the voltage is not within 10% of
rated or 2% of phase-to-phase, have the condition
corrected before continuing start-up.
18. Check that all field piping and venting installation
and connections for the heating and cooling options
have been completed and tested.
19. Set the heating and cooling enable switches to the
‘Off’ position.
VCES-V-CUBE-IOM-1A
14