Blower Shaft Bearings
Blower shaft bearings need periodic lubrication. They should be
checked 20-30 days after initial start-up of operation. The oil cups
on the bearings should be filled with a good grade of SAE 20W or
30W non-detergent oil when necessary. Under normal use, oiling is
required every three months of operation.
Do Not Over- Oil.
Pump Motor Bearings
The pump motor does not require lubrication.
Changing Cooler Pads
Scale may build up on outside of the Rigid Pad, which will restrict
the airflow. The Rigid Pad should be removed and replaced if scale
cannot be removed using the methods described below. Failure to
do so may result in premature failure of components.
1. Remove pad assembly from cabinet.
2. Remove pad retainer from frame. Carefully remove all rigid
media from the louver panel, paying attention to the bottom of the
medial as there is a cut made at the bottom. Remove and discard
old pads.
3. If passages are clogged or pad is dirty, hose off the inlet face of
the pad. Light, gentle brushing of the inlet edges of the pad with
a stiff bristle brush (don’t use a wire brush) will not harm the pad
and will remove stubborn scaling.
4. If necessary, replace with new rigid media pads. Aspen,
expanded paper or other types of evap cooling pads will not work
and will void your warranty.
5. Lay new rigid media pads into the louver panel assy., paying
attention to how the slit at the bottom of the pad is oriented.
6. Return the rigid media retainer so that it fits on top of the rigid
media pads and holds them securely against the louver panel.
7. Pre-soak pads and check for air gaps along edges, reinstall pad
frame into unit.
8. Start pump and allow troughs to fill… check water level in trough
by slightly tilting pad frame out.
Master Blaster Use and Care Manual 5
Shut Down:
- Always drain all of the water out of the cooler and water supply line
when not in use for prolonged periods, and particularly at the end of
the season. Keep the water line disconnected from both the cooler
and the water supply so it does not freeze.
- Disconnect power from cooler during extended periods of non-use.
REPLACEMENT PART
When ordering replacement parts, always refer to the serial and
model number of your cooler. Use the part numbers listed in the
accompanying parts list, as illustrated in the diagrams for your model.
