Routine Maintenance - Friedrich WallMaster PE07K Service Manual

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Parts manual (12 pages)

Product profile (12 pages)

Specifications (12 pages)

Table of Contents

NOTE: Units are to be inspected and serviced by qualified service personnel only.

Clean the unit air intake filter at least every 300 to 350 hours of operation. Clean the filters with a mild detergent in

warm water and allow to dry thoroughly before reinstalling.

The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically

(yearly or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.). Clean the coils and base pan with a soft

brush and compressed air or vacuum. If using a pressure washer, be careful not to bend the aluminium fin pack.

Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure cleaning

coils. Cover all electrical components to protect them from water or spray. Allow the unit to dry thoroughly before

reinstalling it in the sleeve.

NOTE: Do not use a caustic coil cleaning agent on coils or base pan. Use a biodegradable cleaning agent and

degreaser.

Inspect the indoor blower housing, evaporator blade, condenser fan blade, and condenser shroud periodically (yearly

or bi-yearly) and clean of all debris (lint, dirt, mold, fungus, etc.) Clean the blower housing area and blower wheel

with an antibacterial / antifungal cleaner. Use a biodegradable cleaning agent and degreaser on condenser fan

and condenser shroud. Use warm or cold water when rinsing these items. Allow all items to dry thoroughly before

reinstalling them.

Periodically (at least yearly or bi-yearly): inspect all control components, both electrical and mechanical, as well

as the power supply. Use proper testing instruments (voltmeter, ohmmeter, ammeter, wattmeter, etc.) to perform

electrical tests. Use an air conditioning or refrigeration thermometer to check room, outdoor and coil operating

temperatures. Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors.

Inspect the surrounding area (inside and outside) to ensure that the units' clearances have not been compromised

or altered.

Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and debris.

Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and ensure

that the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as needed.

Clean the front cover when needed. Use a mild detergent. Wash and rinse with warm water. Allow it to dry thoroughly

before reinstalling it in the chassis.

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