Drummond MOV-90CN1-D 설치 매뉴얼 - 페이지 14

{카테고리_이름} Drummond MOV-90CN1-D에 대한 설치 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Drummond MOV-90CN1-D 16 페이지. Split system cooling only, r-410a refrigerant
Drummond MOV-90CN1-D에 대해서도 마찬가지입니다: 소유자 매뉴얼 (11 페이지)

페이지 인쇄

10.

MAINTENANCE

Regular maintenance

Some regular maintenance have been carried on by user,

includes: clean dust filter, clean casing, wash condenser and

replace a new belt, as well as do some test for the equipment.

filters

Motor mounting

One of the most critical aspects of an air handler installation is

the mounting of the motor, motor sheave, fan pulley and the

belts, and the adjustment of these items.

Motor sheave and fan pulley mounting and adjustment

The adjustable pitch sheave which is mounted on the motor

shaft controls the fan speed. To adjust the fan speed refer to

figure at right, proceed as followese adjustment of these

items.

a. Loosen the four set screw, item 1.

b. Rotate the adjustable sheave, item 2, to the desired

position.

c. Lock the adjustable sheave in place by tightening the set

screw, item 1.

NOTE:the adjustable sheave is not to be used to adjust belt

tension

MOTOR SHAFT

WARNING

BEFORE MAKING FAN ADJUSTMENTS, BE SURE THE

MAIN ELECTRICAL DISCONNECT SWITCH IS IN THE

"OFF" POSITION TO PREVENT POSSIBLE INJURY DUE

TO ACCIDENTAL OPERATION OF THE MOTOR.

Fig.10-1

motor

FAN BELT ALIGNMENT AND ADJUSTMENT

Place belt on the groove of the fan pulley and motor sheave

to obtain the approximate alignment and belt tension.

Remove the belt and align the fan pulley and motor sheave

using a straight edge,refer to figure.

When the pulley and sheave are properly aligned, re-install

belt. Do not force or pry the belt onto the pulley and sheave.

with the belt in place, adjust so that all the slack is on one side

of the drive. The belt should have from 3/4" to 1" of slack at 3

lbs pressure, refet to figure. Adjust the belt to this tension,

first, loosen the four screw as figure, then raise or lower the

swing base via the adjusting rods and nuts.

Refer to Fig.10-2, loose 4 nuts, and move the electric motor to

adjust belt tension.

The 4 nuts are used for factory

precision adjustment only,that

shall not be adjusted except

professional maintenance staff.

Belt tension is measured by belt tension indicator

Calculate the deflection, deflection=A/64.

Measure the belt deflection force, the force shuold be

between the values shown in Tab.10-1

Belt tension indicator applied to mid_center distance,

16mm defection per 1 metre fospan

4 nuts

Fig.10-2

Fig.10-3

A=315mm

Fig.10-4

Installation Manual