SERVICE/MAINTENANCE
Servicing your HRV/ERV on a regular schedule will result in optimum operating efficiencies and prolonged life of the equipment.
Due to numerous applications in which this equipment can be installed, it is difficult to predict servicing intervals. In certain situations where there is heavy smoke, servicing the equipment every one - two months may be needed; whereas ventilating a meeting room for example for carbon dioxide may only need service every six months to a year.
MOTOR
Access to the motor is through the front service doors. Note heat exchanger core can be removed to provide more room. See CORE in this section.
The motor is a permanent split capacitor type (PSC) which uses a sleeve mechanism to steady the shaft. There is an oil wick beside the sleeve which supplies oil to it on a continuous basis.
If the motor does not have oil tubes, no maintenance is required.
Access to the wick is through oil tubes, (two per motor) located in the motor case itself. These oil tubes are either capped with yellow plugs, (which need to be removed for oiling) or have clear tubes protruding from them.
In either case an oiling device such as an “Oil Telespout” filled with 20 S.A.E.
DO NOT OVER OIL!
HRV CORE (HRV only)
The heat exchange core is accessible through the front service door. Special care and attention should be given to this component as the edges may be
sharp, and the core itself susceptible to damage if dropped.
When removing the core, the location it is removed from should be noted.
The core is removed by carefully pulling the core outward from the unit, sliding it evenly along its “H channel” supports found in each corner of the core. Note the core may have some resistance when sliding out. Avoid tilting the core as this will result in its edges catching the H channel and temporarily preventing its removal.
In most cases, washing the core in a mild detergent and warm water will be all that is needed to completely clean them. Do not use harsh chemicals as this may cause corrosion in the HRV. The time between core service will depend on the application the HRV has been installed in. It can be as often as one - two months or at the very least, cleaned every six months. When reinstalling the core you must note foam location and drip edge location for proper core placement.
See diagram below.
ERV CORE (ERV only)
Remove core and vacuum or use low pressurized air to clean core. Do not wash or submerse in water.
With the core in its proper position, place the bottom flange, (approximately 1/4”) into its H channel support, then place the left side, the right side and finally the top flange into place in the same fashion. Once all four corners are in place, push the core evenly into the cabinet until it reaches the back. Be sure the drip edges are overlapping the drip trays.
Note the core will protrude slightly out from the front of the cabinet, this is so the access door, when closed, ensures a tight fit.
|
|
| FRONT VIEW |
|
|
|
|
Models 700, 1200 | Model 850 |
| Model 500 | ||||
FILTER |
|
|
| FILTER | SINGLE DRIP | FILTER | |
|
|
|
| EDGE CORE |
| ||
|
|
|
|
|
| ||
DOUBLE |
| SINGLE | DOUBLE |
|
|
|
|
DRIP EDGE |
| DRIP EDGE | DRIP EDGE |
|
|
|
|
CORE | DOUBLE | CORE | CORE | DOUBLE |
|
|
|
| DRIP |
|
| DRIP |
|
|
|
FILTER | EDGES |
|
| EDGES |
|
|
|
FILTER |
|
|
| FILTER |
|
| |
|
|
|
|
|
| ||
|
|
|
|
| LEFT DRIP | DRAIN | RIGHT DRIP |
|
|
|
|
| PAN | ||
DRAIN PANS (not on all models) |
| DRAIN PANS (not on all models) | EDGE |
| EDGE | ||
|
|
|
| ||||
Note location and arrangement of cores and filters when removing.
24
