www.poolpak.com | 800-959-772582 | MPK Series - Installation, Operation and Maintenance
Table 5-1. Pool Water Chemistry
For more information on pool water chemistry, see the PoolPak Educational Library article “Indoor Pool
Water Chemistry”.
Monthly Maintenance
Perform the following on a monthly basis:
1. AIR FILTERS: Check and replace as necessary.
2. Direct Drive Plenum Fans & Motors: Fan motor bearings are greased from the factory. DO NOT RE-GREASE FAN
MOTOR BEARINGS.
3. COMPRESSOR OIL LEVEL: The ideal time for checking the oil level is during an extended period of operation
because there will be the least amount of refrigerant mixed with the oil. The compressor should have been in
operation at least 1/2 hour. During the period of operation, the refrigerant will be pumped out of the oil until
only the normal quantity remains. The compressor is equipped with an oil sight glass for checking oil level.
The sight glass is located on the compressor shell. Oil should be added to the system by a qualified refrigerant
service technician only. The oil level in the compressor is correct when oil is visible between the bottom and two-
thirds of the sight glass.
4. REFRIGERANT CHARGE: Check the sight glasses located in the valve compartment on the end of the evaporator
coil. When the refrigerant charge is correct, there should be no bubbles in the sight glasses. Intermittent bubbles
are normal during the first 10 minutes of operation or following a change in operating mode.
5. CONDENSATE LINE: Ensure that it is free of obstructions. Always keep the condensate trap and lines free and
clear. The PoolPak® is capable of producing up to 60 gallons of condensate per hour.
6. UNIT INTERIOR/EXTERIOR: Check for torn insulation and repair if necessary. Check for scratches, nicks,
rust, etc.
7. LOGBOOK: Check and record, in the logbook, the following actual operating values and the values read from
the CPCS controller display:
• Space Temperature
• Space Relative Humidity
To prevent personal injury, disconnect all electrical power to the unit prior
to performing any of the following maintenance procedures.
NOTE
Pool Spa
Ideal Min Max Ideal Min Max
Total Chlorine (ppm) 1.0 - 3.0 1 3 3.0 - 5.0 1 10
Free Chlorine (ppm) 1.0 - 3.0 1 3 3.0 - 5.0 1 10
Combined Chlorine (ppm) 0 0 0.3 0 0 0.3
Bromine (ppm) if applicable 2.0 - 4.0 2 4 3.0 - 5.0 2 10
pH 7.4 - 7.6 7.2 7.8 7.4 - 7.6 7.2 7.8
Total Alkalinity (ppm) 80 - 100 80 180 80 - 100 60 180
TDS (ppm) 1000 - 2000 300 3000 1000 - 2000 300 3000
Calcium Hardness (ppm) 200 - 400 150 1000 200 - 400 150 1000
Calcium Acid (ppm) 30 - 50 10 100 30 - 50 10 100
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